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Service Manual – Gree Comfort

1. d YEGN EK Mi 6 WH Ob eo Electronic a am expansion ee Li Le G ay Q valve FAN MOTOR YEGN POWER WE OPTIONAL e These circuit diagrams are subject to change without notice please refer to the supplied with the unit 42 GWH24AB D3DNA2D OSS 1 AWARNING z z z z OVERLOAD PROTECTOR Please don t touch any terminal when ws Au SAT coup the voltage of terminal P DC and zr Ta z E YEGN INDC at AP1 is higher than 30V to ep r4 t the risk of electrical shock aY eeem w he 6e 9 e ed YE RD nr MI LX Wr TERMINAL COMPU COMP OON TERMINAL 4 MANUAL TSENSOR Em z AP 1 COM INNER d X O aep FA OFAN gt avas Ew V L 11 N pp J w INDC1 0 ENS c ANG i VT W a YEGN EKJ L iE E ct oe ANI WM REACTOR G valve FANMOTOR YEGN POWER WAVE OPTIONAL These circuit diagrams are subject to change without notice please refer to the one supplied with the unit 43 Fault indicator LEDs N2 Voltage Terminal 4 Way Valve Compressor Heater Band WW 1 pE m i Eri a LET 5 4 if E
2. 113 115 Disassembly of 12 000 btah 240 volt Outdoor etos nendum tttm eats atten 116 118 Disassembly of 18 000 btuh 240 volt Outdoor qun tutte 119 123 Disassembly of 24 000 btuh 240 volt Outdoor 124 128 Appendix 1 3 Temperature Sensor Resistance Tables 129 135 y Warning Installing starting up and servicing air conditioner can be hazardous due to system pressure electrical components and equipment location etc Only trained qualified installers and service personnel are allowed to install start up and service this equipment Untrained personnel can perform basic maintenance functions such as cleaning coils All other operations should be performed by trained service personnel When handling the equipment observe precautions in the manual and on tags stickers and labels attached to the equipment Follow all safety codes Wear safety glasses and work gloves Keep quenching cloth and fire extinguisher nearby when brazing Read the instructions thoroughly and follow all warnings or cautions in literature and attached to the unit Consult local building codes and current editions of national as well as local electrical codes Recognize the following safety information Warning Incorrect handling could result in personal injur
3. all sizes 2 Se es al 12 Product Introduction A Hot gas is discharged from the compressor The temperature of the gas in monitored by the Discharge Temperature sensor and sent to the outdoor control panel B The hot gas is directed through the 4 way valve to the appropriate indoor coil making the line a hot gas line C The hot gas will enter the indoor coil and condense to a saturated mix as it travel through the coil and will be slightly subcooled D The refrigerant returns to the outdoor unit through the filter then through the EEV reducing the refrigerant to a low pressure liquid and will maintain 10 degrees F of superheat E The cold refrigerant will travel through the outdoor coil evaporator and will pickup heat from the outdoor air This will cause the cold saturated refrigerant to flash to a saturated mixture which will be superheated to 10 degrees The superheated vapor will travel through the 4 way valve to the accumulator which will prevent liquid floodback G The superheated gas will enter the compressor for another refrigeration cycle The control board will monitor the temperature and pressures and adjust the frequency of the compressor and flow rate of the EEV as needed There are no pressure charts to evaluate temperature or pressures 13 Product Introduct
4. DUCTLESS SYSTEM Installation Service amp Troubleshooting Models GW HO9AB A3DNA2B GWHI2AB A3DNA2B GWHO9AB D3DNA2D GWHI2AB D3DNA2D GWHISAB D3DNA2D GWH24AB D3DNA2D Table of Contents E OC Ni ii u ua aa ee ae nr een nee RUIN SUME MEME 3 Model Number Ve a eee occas scene seco cmc 4 C s o sss ee ee SS MN 5 7 RetriBeratiom Cycles and Componente r 9 13 Indoorec CO OMe oc 14 16 Til lO LI LU O E 17 22 OL 23 26 Refrigerant Lines Connection Evacuating and 27 30 Installation Filter Maintenance and Emergency 31 36 37 43 sss sassa 44 45 Troableshooting Indoor Components 46 47 Lragblesnootne aque lore ols 48 57 o 58 76 MUD hoo nn ON 77 87 FaultC odes Scotdtuls D Op uy 88 109 IJisacsembh p o ere ad 109 110 Disassembly of 9 000 amp 12 000 btuh 120 volt Outdoor Systems eese 111 112 Disassembly of 9 000 bt h 240 volt Outdoor
5. Sensor Heat Exchanger STM 7 1 Electronic Expansionvz Valve JO IOAU A 1 Nofe ccumulator Component locations may vary depending on models Temperature Sensor 4 A ips UND 4 P i L j 4 5 High Pressure Switch Cooling Mode Product Introduction Outdoor Unit Strainer S S N Indoor Unit Temperature SN Sensor 7 TTL 7 Heat Electronic Exchanger Strainer UMMM MMT TTL ee ee SSS B 4 way valve Discharge Silencer Discharge O Temperature S z Sensor Accumulator not 5 all sizes o 0 1 10 Product Introduction E Cooling Mode A Hot gas is discharged from the compressor The temperature of the gas is monitored by the Discharge Temperature sensor and sent to the outdoor control panel B The hot gas is directed through the 4 way valve then enters the outdoor coil The hot gas will be slightly subcooled however there are no pressure ports to take measurements C The subcooled liquid will enter the filter to remove contaminates D The subcooled liquid will enter the Electronic Expansion Valve EEV and will regulate to about a 10 degree superheat level The EEV will adjust its flow ba
6. amp amp r Additional Charge Factory HMM 480 02 02 do 0 02 02 bench GWHISAB GWH24AB D3DNA2D D3DNA2D Additional Charge 0 22 oz ft 0 54 oz ft Max Length without Additional Charge Factory Hey 7 OZ 26 Refrigerant Charging Procedure Follow the procedures for leak testing with nitrogen prior to adding charge on a new installation or existing one suspected for leaks See preceding page 5 16 x 1 4 adapter may be required to connect hose to port Check to insure that the liquid and gas valves are closed on the unit Close all valves on your gauge set then connect the vacuum pump to your gauge set Pump down lineset and indoor unit This step will be repeated for all zones Place the refrigerant tank on the charging scale Open the tank valve turn on the scale then zero the scale 29 Refrigerant Charging Procedure cont Charging should be completed with the unit off not running and through the liquid side with liquid refrigerant If there are no ports on the liquid side use the gas side port connection charging with liquid Record the amount of additional charge for future reference If the scale was zeroed with the refrigerant tank on the scale the amount added to the system will be a negative amount since it was removed from the tank After the proper amount of refrigerant has
7. piap Ye E 4 n ri du umm 8 Remove motor and motor support Remove the screws holding the motor then remove the motor Remove the screws holding the motor support then lift motor support upwards to remove it 10 Remove clapboard sub assembly Loosen the screws of the clapboard sub assembly The clapboard sub assembly has a hook on the lower side lift and pull the clap board sub assembly to remove Me y s h 5 Iu Rum d N E ar phe m 0 Pi Clapboard sub assembly 114 Disassembly of Outdoor Unit 9 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 11 Remove 4 way valve assembly Follow proper procedures to remove refrigerant Unscrew the nut holding the coil and remove the coil from the valve Unsolder the 4 joints holding the valve assy with the compressor and tubing Remove the 4 way valve Use care not to damage valve wires etc 12 Remove compressor Loosen the front nuts of the compressor reclaim all refrigerant properly unsolder the tubing joints remove the wire connec tions then remove the compressor 115 Disassembly of Outdoor Unit 12 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 1 Remove top cover and rear grille 3 Remove electric box sub assembly Remove the screws holding the top cover and rear gr
8. Indoor unit air return is poor or fan speed is too low 1 The wire terminal of outdoor fan motor is loose repair connec tion 2 Motor damaged replace the motor 3 Fan motor module on mainboard is defective re place the main board AP1 Unit Will Not Start Power voltage low Ensure proper voltage should be withing 10 of nameplate Check fuses or circuit No power eae Poor electrical connection Check wire connections Controller fuse open Replace fuse Defective controller board Replace controller board Outdoor unit will not start Indoor and outdoor unit inoperative No power at remote controller Replace remote controller batteries Remote controller not responding Remote controller Press the Auto button If no response check for proper voltage and connections If there is a response check for defective remote controller or indoor receiver Breaker trips Check for shorted wires Circuit breaker tripping immediately reactor or AP2 board Breaker trips within minutes of turning on Indoor receiver defective Individual components could be defective Eliminate by checking resistance on each individual component Check insulation on wires and proper positioning of wires Check for defective Breaker is warm to touch breaker poor wire connections Inadequate Cooling or Heating Incorrect temperature setting Adjust temperature sett
9. WIYEGN GJ HEALTH HEALTH N H EVAPORATOR ELECTRIC BO rl ley 08 10 M M 00 V GENERATO Bal STEPMOTOR FANMOTOR Oa These circuit diagrams are subject to change without notice please refer to the one supplied with the unit _ 37 Electrical Schematics GW HO9AB A3DNA2B GWH12AB A3DNA2B Outdoor Unit TUBE OUTROOM EXHUAST m TEM SENSOR TEM SENSOR SENSOR W3YEGN AC N3 AG N4 AC L3 AC L2 AG N5 AC L2 AC L4 AV ACN W20 w w OG 21 C3 C4 warp il WW 2 u W22 WH These circuit diagrams are subject to change without notice please refer to the one supplied with the unit 38 XJ D3DNA2D Indoor Units 220 vac symbol Color symbol yee PROTECTIVE EARTH RD RED 4YV 4WAYVAVE YEGN YELLOW GREEN TERMINAL BLOCK BN BROWN BU X BLU BK BLACK S l Indoor Unit 220 vac models SWING MOTOR DISPLAY BOARD ROOMTEMP WS l SENSOR SENSOR FAN MOTOR i CONNECTOR MANUAL PANEL Ld 1 TERMINAL TUBE PGPGF OW BLOCK 20 CAP n JUMP EU PRINTED CIRCUIT BOARD D SWING UD2 Disi DISP2 YEGN GN V m YEGN GN AP1 DISPLAY G 5 GG EVAPORATOR ELECTRIC BOX These circuit diagrams are subje
10. i 1 m lt 1 ig B TE E k B Em iL Yl k if Lo a 3E pem mn LE XL FEE af e Compressor Wires 44 Printed Circuit Boards GWH09AB A3DNA2B GWH12AB A3DNA2B Outdoor Unit AP1 Board Top View jumper neutral wire live wire terminal big capacitor electric fan terminal i qay valve jumpar A wayvaketerminal expansion valve entrel wireterminal big capacitar Jumper positive pole negative pole neutral wire brown wire blue wire live wire earthing wire terminal jumper lt e wire connection terminal of big capacitor positiv pale and negativ poleforange wire power switch fuse O overload tempe outdoorambient neutral wire terminal transformer 3 phase tem inals outdoortube U phase is blue wire compressor discharge temperature sensor communication wire Y phase is yellow wire temperature sensor terminal connected WV phase is red wire toindoorblack communication wire These circuit diagrams are subject to change without notice please refer to the one supplied with the unit 45 Troubleshooting Indoor Components n I s ds o M Do a To check the condition of the indoor fan motor voltage measurements and resistance measurements can be c
11. panel is suffi protection 19 times operation cient and whether the radiator is inserted tightly If its no use please replace control panel AP1 Decrease fre All loads operate Refer to the mal quency due to normally while function analysis high tempera operation frequency overload high and blink ture resistant for compressor is temperature resis 10 times during heat decreased tant ing operation Static dedust ing protection and blink During cooling and 1 Wiring termi drying operation nal OVC COMP compressor will is loosened In stop while indoor normal state the Overload fan will operate resistance for this protection for During heating terminal should be compressor i i operation the com less than 1 ohm 2 plete unit will stop Refer to the mal operation function analysis discharge protec tion overload During cooling and Refer to the mal drying operation function analysis compressor will overload high stop while indoor temperature resis System is fan will operate tant abnormal During heating operation the com plete unit will stop operation 66 Models GWH09AB D3DNA2D amp GWH12AB D3DNA2D cont Indicator has 3 kinds of display Malfunction Indicator Display during blink Possibl Name ing ON 0 5s and OFF 0 5s ossible Causes status and during blinking ON A C Status 0 5s and OFF 0 5s IPM protec tion an
12. Compressor Windings qa ud Cin Ir 7 1 2 f ER lj 71 c 7 Compressor Windings x Red Yellow amp Blue Wires Slightly depress tab for Compressor Winding Resistance Check easy removal Remove the compressor wires from the circuit board The wires red to yellow yellow to blue amp red to blue should have readings from 2 4 ohms There should be no reading from any wire to chassis ground If the read ings between the windings differ greatly the windings are bad If there is a reading from any wire to the chassis there is leakage in the windings The reactor filters out electrical noise and transient voltage spikes to the control board There will be a reading of less than 1 after the wires are removed There should be no reading from either reactor terminal to ground 51 Troubleshooting Outdoor Components Outdoor Motor Winding Resistance Check Disconnect power to the unit all reading are made with no power and fan motor wires disconnected from circuit board Remove the white and orange wire from the reactor and then disconnect the plug from the circuit board The chart below will indicate the approximate resistance values in ohms Readings may vary slightly for different models This is a DC brush less motor resistance readings may vary with meters Plugging a know
13. Test the isolation impedance between the three phases of the compressor and copper tubing Is the resistance above 500MO Replace Compressor Is Malfunction eliminated NO Replace the outdoor mainboard End Troubleshooting Tc To gt Possible Causes Dirty indoor and outdoor coils Faulty indoor or outdoor fans High system pressure Over charge of refrigerant Correct wiring problem 103 H7 Error Code continued on next page H7 Desynchronizing of compressor 1 Check the resistance of the compressor Status terminals and connections to the compressor During cooling mode compressor will stop indoor fan will run Heating mode all units stop Check for overcharge of refrigerant Check for correct voltage Check for dirty coils and filters Troubleshooting Procedure for Synchronizing Fault after Unit is Started Start Troubleshooting after unit is powered off for 3 minutes Are the compressor terminal connected properly Replace Control Board AP 1 Compressor Wires Correct wiring Remove Malfunction problem Replace Compressor End Troubleshooting 104 H7 Error Code continued H7 Desynchronizing of compressor 1 Status During cooling mode compressor will stop indoor fan will run Heating mode all units stop Check the resistance of the compressor terminals and connections to the compressor Check for overcharge of refrigerant 3 Check f
14. The EVO unit has many features to enhance comfort and efficiency The operation of these features will be explained later in this service manual Superior inverter technology is used to control capac ity while maintaining maximum efficiency The EVO systems are equipped with G10 inverter technology providing precise control over the compressor frequen cy based on operating pressures and temperatures Should an abnormal condition occur the software will adjust the compressor frequency or shut down the system indicating the appropriate fault The indoor unit contains a digital display which will indicate the current fault The evaporator swing mo tors fan motors and circuit board are also components of the indoor unit The indoor units have a bypass switch to bypass the remote control if lost or batteries fail This will be explained later in this service manual The systems require R410A and are pre charged for 25 of lineset Please refer to your installation manual for additional charge for linesets longer than 25 The maximum allowable line lift and distances vary by model please refer to the charts in the manual for proper lineset applications The systems use a PVE oil and should require no addi tional oil All EVO units utilize an Oil Return Mode which will return oil to the compressor should the need arise Product Introduction Outdoor Unit Indoor Unit Strainer PO MOLE
15. 0 Wire Size to Outdoor Unit awg 14 14 of Wires per Local Code Wire Size and of Conduc tors from Indoor to Outdoor 14awg 4c unit Note The manufacturer reserves the right to modify the design and or change the specifications without notice Please refer to specific installation manual for current information Physical amp Electrical Data cont 0 Model GWH18AB D3DNA2D GWH24AB D3DNA2D Power Supply 208230v 60Hz 208250 6 System Performance System Specifications Compressor Type 77 Twin Rotary Soundlevel 6 25800 Net Gross Weight Indoor 29 40 3 6 2 Weight Outdoor 00 13 46 Condenser Coil Type 2 50 4 Refrigeran Charge oz 7 40 44 410 564 aS Lo f Additional muuemm D 9 p o a a L Wire Size to Outdoor Unit of Wires per Local Code Wire Size and of Conduc tors from Indoor to Outdoor 14awg 4c unit Note The manufacturer reserves the right to modify the design and or change the specifications without notice Please refer to specific installation manual for current information Product Introduction The EVO Ductless split heat pumps are single zone units available in size from 9000 btuh to 24 000 btuh providing heating and cooling All comfort settings are controlled by a remote control
16. 0 5s and OFF 0 5s Cooling dehumidifying compressor stop running Fan motor works Heating all will stop Cooling dehumidifying compressor stop running Fan motor works Heating all will stop Malfunc A C Status tions Please refer to trouble shooting Please refer to trouble shooting 75 Malfunction Name Module sensor circuit diagram Module temp over high protection DC Bus volt age dips Low DC Bus voltage pro tection IPM temp is too high limit decrease frequency Four way valve abnor mal Outdoor unit zero cross de tecting error Anti freezing limit decrease frequency Fan mode protection Indoor Unit Displaying Method d d E tri 5 a m o Models GWHISAB D3DNA2D amp GWH24AB D3DNA2D cont Indicator Display during blink ing ON 0 5s and OFF 0 5s Running LED Cooling LED Outdoor Unit Display LED Indicator has 3 kinds of display status and during blinking ON 0 5s and OFF 0 5s D40 D5 A C Status Heating LED OFF 3S and blink 18 times OFF 3S and blink 19 times DA1 D6 D42 D16 D43 D30 OFF 3S and blink 20 times OFF 3S and blink 21 times AII loads work nor mally but the running frequency limited or decrease Cooling outdoor fan motor compressor stop run ning indoor fan works Heating outdoor fan compressor indoor fan motor stop running Malfunctions
17. 3079 4754 15 90 3629 7 7 986 2954 9 192 4 8 308 38 1004 2836 f9 13 6 3239 9 1022 2723 2 104 3062 40 1040 2615 u 22 2896 fa 1058 25 10 26 2 1076 2413 9 158 12593 f 43 1094 2319 8 76 2456 a ru2 2229 f 714 12326 5 030 2143 6 22 2205 6 nas 206 5 230 29 7 6 fissi a 8 19823 48 84 19 06 3 94 9 002 1834 2 4 50 1220 1765 3 129 a 92 5 1 1098 1699 3 04 o 320 fis 2 156 11636 14 92 2955 1 98 fiss 3 174 155 05 210 2872 2 195 1454 54 2 gt 16 2228 2792 3 96 5 1310 1462 07 2246 2715 _ a 6 028 49 08 24 264 4 609 4 469 4 334 4 204 4 079 3 958 3 841 3 728 3 619 98 2084 3 514 99 202 3413 3 315 3 22 33 Appendix 3 Resistance Table of Outdoor Discharge Temperature Sensor 50K Temp Temp Temp Temp Temp Temp C Dp C F C F 5 251 7 46 1358 9 282 2568 6 08 fusi 8 1364 11309 60 2300 2498 7 4584 fuss 9 82 1262 2318 2431 8 44 fios 60 1400 7 02 236 246 9 42 o fe i418 fiza 093 2354 2302 lO 8 62 1856 1132 sts 9342 463 1534 1093 12 56 80 64 172 1054 1 54 8495 65 90 10 18 aa 592 845 6 1508 9827 as 90 17735 67 1526 9489 17 26
18. 90 3147 467 1526 3861 0 77 18 08 3004 68 1544 3 729 0 769 17 606 2868 69 162 3 603 0 746 18 64 2739 fzo 1580 41 0 729 a9 62 2617 1 1598 3364 071 20 so 2501 2 1616 3252 0 692 21 jess 1259 3 1634 3144 0 674 22 116 2285 74 1652 304 0 658 23 74 2185 75 160 294 0 64 52 9099 6 1688 2844 0 623 jo 20 77 176 2752 0 607 26 88 1914 78 1724 2663 0 592 27 06 79 1742 2577 0 577 28 24 11755 s 1760 2495 0 563 9 2 178 245 J133 214 0 549 3 8680 29 1796 239 14 2732 0535 _ s 08 54 3 2265 35 2750 05201 _ 32 6 49 fsa 32 2194 16 268 059 132 Appendix 3 Resistance Table of Outdoor Discharge Temperature Sensor 50K Temp Temp Temp Temp Temp Temp C Pp C F C F 29 22 8555 23 74 5374 75 1670 7224 28 4 7998 124 52 5141 76 1688 6998 27 166 79 5 o 4919 7 1706 6761 26 448 708 76 798 4708 78 1724 654 25 450 sos 7 806 4507 6 331 24 2 608 8324 43 16 6 129 80 03 94 5806 9 2 4134 5 933 22 76 5489 fso 60 3961 5 746 21 58 5166 4 828 37 96 5 565 20 40 4865 32 96 3638 5 39 19 22 4583 33 94 522 18 04 42 92 94 8 1868 506 az 4 4074 5 50 3209 4 904 6 32 3845 fse 968
19. 9440 4700 9470 9440 47 5 9460 4770 4740 Troubleshooting Outdoor Components Cooling Mode 3 w gt 4 To Accumulator Compressor Discharge i w ISN m Coil f Suction Line j Checking the 4 way valve in cooling mode requires the measurement of 4 readings First record the temperature of the compressor discharge tubing secondly record the temperature of the tubing go ing to the condenser There should be no more than a 10 degrees difference between the two readings The next set of readings will require recording the temperature of the tubing going to the suc tion line and the temperature of the tubing going to the accumulator Again if there should be less than 10 degrees difference between these readings A temperature reading higher than 10 degrees may indicate a leaky valve not fully shifter or a block age in the valve 4 Way valve solenoid resistance check Heating Mode Compressor A Discharge gt LB n a r Checking the 4 way valve in heating mode re quires the measurement of 4 readings First re cord the temperature of the compressor discharge tubing secondly record the temperature of the suction line tube There should be no more than a 10 degrees difference between the two readings The next set of readings will require
20. Did this correct the Correct connections problem Is the connection wire broke No Check to see if there is power input between the neutral wire and live wire of the outdoor main board The malfunction indoor unit resumes normal neee No Replace the filter board of Did this correct the Yes the outdoor unit problem No Replace the outdoor main board No Replace the indoor main Are units now communicating board Yes End Troubleshooting 95 Error Code Diagnostics s u E8 Error Code Overload System Protection Problem E8 Overload System Protection Problem Status 1 Incorrect refrigerant charge Cooling operation compressor stops while 2 Metering device problem indoor fans runs Heating operation complete 3 Compressor failure unit stops Start Troubleshooting after unit is powered off for 20 minutes Is the overload protector positioned and wired correctly Under normal ambient conditions is the resistance of the overload less than 1000 ohms Replace Are the wires to the expansion Overload valve connected per the k wiring diagram propiem Metering Device Resistance between the first 4 pins and the 5th pin should be less than 100 ohms Replace coil of electronic 5 system operating expansion valve normal Replace outdoor ki AP1 control dir cee board properly Check Refrigerant for leakage and proper charge End Troubleshooting 96 F
21. alfunction n dea or Display during blin p a status and during AT Sis Name ing ON 0 5s and OFF 0 5s blinking ON 0 5s and OFF 0 5s Operation Coot Heating Yellow Red Green operation the complete unit will stop During cooling operation Refer to the corre Communica OFF 3S compressor stops while sponding malfunc tion malfunc and blink 6 indoor fan motor operates tion analysis tion times During heating operation the complete unit stops During cooling operation Refer to the malfunc High tempera OFF 3S compressor stops while tion analysis over ture resistant and blink 8 and blink indoor fan motor operates load high tempera protection During heating operation ture resistant the complete unit stops During cooling and drying Replace outdoor OFF 35 operation compressor will control panel AP1 EEPROM stop while indor fan will andblink andblink malfunction operate During heating 15 times 11 times loads operate normally Discharging after while operation frequency the complete unit is for compressor is decreased de energized for 20 mins check whether the thermal grease OFF 3S on IPM Module of and blink 6 outdoor control panel Limit decrease frequency due to high and blink 6 temperature of times is sufficient and module whether the radiator is inserted tightly If its no use please replace control panel API Wireless remote receiver 1 No jump
22. and defrost has finished The runtime will not be cleared when the unit has stopped after reaching the setpoint temperature a protection fault or changing to fan mode There are 3 perimeters used in the defrost algorithms Outdoor ambient Toutdoorambient Outdoor tube Toutdoortube and a calculated Tcompensation T compensation is calculated by the following D After power up for the first defrost Tcompensation 32 F E Toutdoortube gt 36 F then compensation 32 F Toutdoortube lt 36 F then T compensation 37 2 When heating has operated continuously for 45 minutes or accumulated for 90 minutes the unit will enter defrost mode in 3 minutes after meeting any of the conditions below A Outdoor ambient gt 41 F and outdoor coil lt 28 F B 28 F lt Tsudoocambietit 419 E Toutdoortube lt 21 P C 23 F lt T satdoscat blent lt 299 F lt T saidoortube lt 16 F D 14 F lt Toutdoorambient lt 23 Toutdoortube T compensation lt Toutdoorambient 37 F 3 During defrost if run time for the compressor does not reach 3 minutes the defrost cycle will not start for the next 2 hours At that time the compressor stops operation and 30 seconds later the outdoor fan will stop 30 seconds after this the 4 way reversing valves will de energized Following another 30 second delay the compressor will increase its compressor speed for defrosting Defrosting will last for 450 seconds or unt
23. been weighed in close the manifold valve Wy E N 8 pamm 6 Close the tank valve then carefully remove the hose and adapter Replace the charging port cap back on the outdoor unit valves On new installations open all liquid and vapor service valves 9 0 1 0 Ern Proper installation site is vital for correct and efficient operation of the unit Avoid the following sites where Strong heat sources vapors flammable gas or volatile liquids are emitted High frequency electro magnetic waves are generated by radio equipment welders and medical equipment The air is contaminated with industrial vapors and oils The air contains sulfurous gas such as in hot spring zones Poor air quality exists CETIS The air inlet and outlet should be away from any obstruc tions Ensure the air will easily circulate through the entire room 1 Select a site where the condensate can be easily routed or consider a condensate removal pump 2 Select a place where it is out of reach of children 3 Select a place that has adequate mounting structure strong enough to withstand the full weight and vibra tion of the unit 23 4 Besure to leave enough space to allow access for routine maintenance Refer to unit installation specifi cations for clearances Select a place more than 3 feet away from any TV or other electrical appliances 1 Selecta suitable site where proper drainage will occur 2 Sel
24. btuh Physical amp Electrical Data cont 0 Model GWHO9AB A3DNA2B GWH12AB A3DNA2B Power Supply 1 GOHZ fi5V G0Hz Rated Current Heating Amps 602177100000 System Performance System Specifications Compressor Type 7 Twin Rotary Sound Level do 6 J 5 Weight Indoor lb 26 33 26 33 NetGross Weight Outdoor 8 9 99 02 Condenser Coil Type QGoldFinCoded 0002 Line Set Size Lig Suction 1 4 38 1 4 1 2 Max Total Piping Length Feet 50 20 W Wire Size to Outdoor Unit awg 12 10 of Wires per Local Code Wire Size and of Conduc tors from Indoor to Outdoor 14awg 4c unit Note The manufacturer reserves the right to modify the design and or change the specifications without notice Please refer to specific installation manual for current information Physical amp Electrical Data cont 0 Model GWH09AB D3DNA2D GWH12AB D3DNA2D Power Supply 208230v 60Hz 208250 6 System Performance System Specifications Compressor Type i Inverter driven Twin Rotary Soundlevel 54 055 NetGross Weight Indoor lb 24 33 BS NetGross Weight Outdoor 0 90 9 90 02 Condenser Coil Type 2 ne Sel A M 1 4 3 8 Additional mee 3 MERE 2 1 n gt
25. good motor in the board would provide a quick troubleshooting technique Motor Leads Blue Yellow Black White Red Negative Meter Lead this color 52 092 LY WYL 2 1008 Reactor Resistance Check The line reactor helps to smooth the inrush current reduce harmonics and noise and buffers the system pro tecting the electronics from transient voltage noise The resistance between the coils will be very low approxi mately 3 ohms and should not have any resistance to ground You should disconnect the wires from the reactor before taking any readings Compressor Crankcase Heater Check k Compressor Crankcase Heater Resistance Check Unplug the wire connector from the circuit board The resistance should read approximately 2 15K ohms There should be no reading from either wire to ground If readings vary from these measurements replace the heater 22 Troubleshooting Outdoor Components These sensors are a negative coefficient thermistor that decrease in resistance as the temperature increases The sensors are used to monitor the temperature of the refrigerant leaving the indoor coil to maintain a correct superheat operation Please refer to the troubleshooting section for error codes generated by a sensor fault 54 Liquid Line Temperature Sensors These sensors are a negative coefficient thermistor that decrease in resistance as the temperature increases The sensors ar
26. gt dropped frequency current gt Red indicator blinks 3 times ube temp gt dropped frequency current Red indicator blinks 4 times current Red indicator blinks 5 times Outdoor temp sensor malfunction Red indicator blinks 6 times Outdoor amb sensor malfunction Red indicator blinks 7times Outdoor exhaust sensor malfunction Red indicator blinks 8 times Starting at temp does not reach Green Indicator does not blink gt Communication is abnormal 84 Compressor Running Hot Improper installation bad unit ventilation not level direct sunlight Check for proper installation per etc manual Ambient temperature too high Check for operational limits Clean indoor coils filters and Filters or coils dirty Indoor or outdoor fans Check fan settings and controller operating at correct speeds board Compressor running too hot stops and starts frequent Measure incoming power Should prop g be within 10 of nameplate Refer to charging procedures check for leaks if charge is low Refrigerant Incorrect refrigerant charge must be weighed in by using a charging scale pressure charts are not available Check U V W wire connections as well as all power connection to and from board and components Poor component wiring connections Check resistance of compressor ompressor mattunction wi
27. holding the front grille and front panel Remove the grille Remove the remaining screws holding the panel then loosen the clasp on the right side rotate the panel to the left then remove the panel grille 3 Remove right and left side panel Remove screws holding the right side panel with the chassis valve support and electric box then remove the right side panel Right side Remove screws holding the left side panel with the chassis then panel remove the left side panel D Td reer I NAA Left side panel 120 Disassembly of Outdoor Unit 18 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 4 Remove axial flow fan Remove the nuts and washers holding the fan blade on then remove the blade Axial fan blade 5 Remove electric box and box protector Remove the screws holding the electric box sub assembly loosen the wire bundle disconnect the wire terminals then remove the box sub assembly Remove the screws on the box protector then remove the protector 121 Disassembly of Outdoor Unit 18 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 6 Remove sound proof sponge Remove the sound proof sponge protecting the compressor 7 Remove isolation sheet Remove screws holding the isolation sheet then remove the isolation sheet 8 Remove
28. inhibit the growth of bacteria and mildew Works with Auto mode 11 Turbo Fan Boost the cooling or heating airflow allowing the unit to reach the preset temperature in the shortest amount of time 12 Timer On Button Press the Timer Om button once to set mode on time press again to save setting Holding the or button down will rapidly change the time in 10 minute intervals 13 Temp Button Toggles the display between set temperature indoor temperature and outdoor temperature 14 Sleep Button Sets sleep mode function see owners manual for specific model information 15 Swing Angle Button Controls the angle of the louvers for the convenient adjustment of airflow 16 Timer Off Button Press the Timer Off button once to set mode off time press again to save setting Holding the or button down will rapidly change the time in 10 minute intervals 17 Light Button Turns the light on the indoor display on and off 18 Auto Button Manual Override Located on indoor unit In the event the controller is missed placed or the batteries are defective this will override the remote controller If the controller is on pressing this button will stop it if it is off pressing the button will turn the controller on When turning the controller on the swing and light will be on and the unit will run in Auto Mode 26 Refrigerant Lines Preparation amp Connection The refrigerant lines should
29. mal function analysis 67 Models GWHO9AB D3DNA2D amp GWH12AB D3DNA2D cont Indoor Unit Malfunction Indicator Display during blink ing ON 0 5s and OFF 0 5s Outdoor Unit Unit Indicator has 3 kinds of display status and during blinking ON A C Status Possible Causes 0 5s and OFF 0 5s Module temperature is too high Internal motor fan motor do not operate Desynchro nizing of compressor protec tion Outdoor DC fan motor malfunction 68 and blink 11 times and blink 7 times and blink 6 times and blink 23 times OFF 3S and blink 14 times OFF 3S and blink 14 times Internal fan motor external fan motor compressor and electric heater stop operation guide louver stops at pres ent location During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the com plete unit will stop operation During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the com plete unit will stop operation Outdoor DC fan motor malfunction lead to compressor stop operation 1 Bad contact of DC motor feed back terminal 2 Bad contact of DC motor control end 3 Fan motor is stalling 4 Motor malfunction 5 Malfunction of mainboard rev detecting circuit Refer to the mal function analysis IPM protection loss of synchro nism pr
30. perform leak testing and evacua tion before wiring to save time electrical connections can be completed while your vacuum pump is running Note The outdoor unit contains a refrigerant charge leave liquid and gas valves closed 1 After no leaks have been detected connect a vacuum pump to the outdoor unit 2 Connect appropriate hoses to manifold gauge vacuum pump and unit refrigeration connections 3 Evacuate the system until the micron gauge reads no higher than 350 microns 4 Close valve to vacuum pump if pressure does not rise above 500 microns after one minute the evacuation should be complete 5 fit does rise check for leaks and or evacuate longer 6 For refrigerant lines longer than 25 feet refer to in stallation instructions chart included with the unit installation manual for additional charge 34 Connect the Outdoor Wiring Installation 1 Remove the handle on the right side plate of the out door unit 2 Connect wiring from indoor unit to 1 2 3 amp ground being careful to match color code of indoor connections Repeat this for each indoor unit 3 Connect power wiring form outdoor disconnect to L1 L2 and ground 4 Check all connections to tightness 5 Reinstall the cover handle Note Follow all local electrical codes for electrical wiring 35 Filter Maintenance and Emergency Operation Cleaning Air Filter 1 Remove the front panel as shown on the picture in th
31. recording the temperature of the tubing going to the condens er coil and the temperature of the tubing going to the accumulator Again if there should be less than 10 degrees difference between these readings A temperature reading higher than 10 degrees may indicate a leaky valve not fully shifter or a block age in the valve Be sure all power is off to the unit Remove the plug connecting the 4 way vale to the circuit board Check the resistance with an ohmmeter The reading should indicate 1 8k If the reading is infinite replace the solenoid coil 49 Troubleshooting Outdoor Components Temperature Sensor Using a glass of ice water place the sensor into the glass with a digital thermometer Wait a few minutes for the reading to stabilize Compare the readings to the sensor tables in Appendix A it the reading are not compara ble replace the sensor When replacing the sensor be sure to fasten the sensor securely if it is attached to a tube Temp Temp C F O 120 402 2 1156 496 14 2192 0898 3 1274 4802 fios 2210 085 2 194 4431 0292 465 6 228 0848 3 sza 214 5 1310 446 07 246 085 4 1 92 409 6 128 494 08 264 082 5 4 3815 57 1 6 4139 6 08 3632 58 1364 39 we 0 779 7 46 3458 9 1382 fasas 2318 0737 _ 8 94 60 1400 378 9 3138 fei 1418 59 50
32. the compressor or refrigerant tubing without proper hand protection Do not operate th unit without the air filters in place Should any emergency occur stop the unit and disconnect the electrical supply Properly insulate tubing running inside the room to prevent water damage from condensation y Warning All installation or repair work shall be performed by your dealer or a specialized subcontractor as there is the risk of fire electric shock explosion or injury Warning Pressurized Retfrigerant Personal injury could result in failure to follow this warning Systems contain oil and refrigerant under high pressure proper refrigerant handling techniques should be completed by a qualified technician y Warning Live Electrical Components Personal injury property damage or death could result in failure to follow this warning Follow all electrical precautions when servicing this system it may be necessary to service or troubleshoot with live electrical circuits All work should be completed by a qualified technician Product Catalog Number Nomenclature G W H 12 AB D3 D I GREE I Indoor Unit R410a O Outdoor Unit A 115 vac Revision DC Inverter C Cooling H Heat Pump Panel 09 9 000 btuh Product Series 12 12 000 btuh Terra TB TC TD 18 18 000 btuh EVO AB AC 24 24 000 btuh EVO Multi ND 30 30 000 btuh NEO MA MB MC MD LB 36 36 000 btuh RIO KF KG 42 42 000
33. to overcurrent Decrease frequency due to high air discharge Limit decrease fre quency due to anti freezing Indicator has 3 kinds of dis Indicator Display during blink ing ON 0 5s and OFF 0 5s Cool OFF 3S and blink 5 times OFF 3S OFF 3S and blink 8 times OFF 3S and blink 9 times OFF 3S and blink and blink 2 times 2 times and blink 6 times play status and during blink ing ON FW 5s and OFF 0 5s OFF 3S and blink 7 times OFF 3S and blink 3 times OFF 3S and blink once OFF 3S and blink twice OFF 3S and blink 4 times A C Status During cooling and drying operation compressor will stop after oper ating for about 3 mins while indoor fan will operate During heating operating the com plete unit will stop after operating for about 3 mins All loads operate normally while operation frequen cy for compressor is decreased All loads operate normally while operation frequen cy for compressor is decreased All loads operate normally while operation frequen cy for compressor is decreased All loads operate normally while operation frequen cy for compressor is decreased Possible Causes 1 Outdoor tempera ture sensor hasn t been connected well or is damaged Please check it by referring to the resistance table for tempera ture sensor 2 The head of temperature sensor hasn t been in
34. until the micron gauge reads no higher than 350 microns C 4 Close valve to vacuum pump if pressure does not rise above 500 microns after one minute the evacuation should be complete 5 If it does rise check for leaks and or evacuate longer 6 Forrefrigerant lines longer than 25 feet refer to installation instructions chart included with the unit installation manual for additional charge 27 Refrigerant Charging Procedure Please refer to your units installation manual for proper charge If your lineset exceeds the chart below for your model additional charge may be required The charge must we weighed in with a refrigerant charging scale You can only add additional refrigerant to a new installation If a low or high charge is suspected you must reclaim the refrigerant then weigh in the correct amount per specifications including any additional for long linesets It is important to check for leaks before adding refrigerant 1 Determine addition refrigerant charge The EVO single zone units contain a factory charge adequate for up to a total length of refrigerant line as indicated in the chart below Additional refrigerant will need to be added for total lengths over the listed length Confirm the following chart with your installation manual for additional charge amounts GWHO09AB GWHI2AB GWHO09AB GWHI2AB A3NA2B A3NA2B D3DNA2D D3DNA2D Additional Charge 0 22 oz ft 0 22 oz ft 0 22 oz ft 0 22 oz ft Max Length without
35. 1 F5 Temperature Sensor Codes See troubleshooting chart next page Fault amp Status Indoor ambient temperature sensor is open or short circuited Status Possible Causes Loose or bad contact of indoor temperature sensor Duri TOME 2 Sensor wire leads not properly connected uring cooling amp dehumidifying indoor unit 3 Faulty sensor check readings with charts operates while other functions stop During axo U 4 Main circuit board defective heating operation complete unit stops Indoor evaporator temperature sensor is indoor eva orator le sensor IS 1 Loose or bad contact of indoor temperature open or short circuited sensor Status 2 Sensor wire leads not properly connected I U Set Boll FEN 3 Faulty sensor check readings with charts operation cooling and heating modes Main circuit boot Outdoor ambient temperature sensor is open ambient i Loose or bad contact of outdoor temperature or short circuited sensor Status 2 Sensor wire leads not properly connected Cooling operation compressor stops while 3 Faulty sensor check readings with charts indoor fans runs Heating operation complete 4 Main circuit beard unit stops Outdoor Mid Coil condenser temperature Outdoor condens 1 Loose or bad contact of outdoor temperature sensor is open or short circuited sensor Status 2 Sensor wire leads not p
36. 6 32 15 6 968 8 1904 1934 as 90 5 fsz 6 f2 9 1922 145 4 8 192 38 104 1152 90 1940 1818 13 86 199 39 1022 16 91 1958 1756 12 fso 1040 1062 1 71 u 22 fues fa 1058 02 1 658 96 10 140 i103 42 76 9803 1 609 9 58 11046 fas 1094 942 1 561 8 76 9913 44 i2 9054 1 515 7 M5 30 8705 1 47 6 2 8917 46 8 837 fos 2084 142 5 230 846 7 6 8051 79 202 1356 4 8031 fas 7745 1 346 3 26 6 7624 9 002 7453 2 90 190 7173 1 2 6879 51 1238 6905 o 120 67 22 1156 6648 a 6213 3 1274 6403 2 156 5908 1292 6167 3 sza 5619 5 i310 5942 4 192 5346 6 1328 5726 5 4 5087 7 146 5511 6 08 82 8 1364 532 7 46 9 2 513 8 4 452 foo 1400 4948 9 6414 479 1 307 1 269 1 233 1 198 1 164 1 131 1 099 1 069 1 039 1 01 0 983 0 956 0 93 31 Appendix 2 Resistance Table of Outdoor and Indoor Tube Temperature Sensors 20K Temp Temp Temp Temp Temp Temp C F C F C F 9 90 3987 620 1436 465 14 2372 094 ji sts 43 1454 fass 15 290 oss 12 96 3624 4 72 4289 66 408 0 856 1 54 3457 65 0 44 17 426 0833 16 52 13298 66 508 398 18 244 osi as
37. 6 Error Code Communication Failure of Some Indoor Units E6 Communication Failure Status Improper voltages Cooling operation compressor stops while 2 p indoor fans runs Heating operation complete 9 Proper wiring between Indoor and outdoor unit stops units Communication failure of some indoor units De energize check the wire connections of indoor and outdoor units and power to outdoor unit Are all connections No Did this correct the Yes Correct connections correct problem No De energize change the communication wire of the working communication indoor unit and malfunctioning non communicating indoor unit then energize the unit and wait for 3 minutes The malfunction Replace outdoor main board indoor unit resumes normal Yes Replace the main board of the malfunctioning indoor unit End Troubleshooting 94 Code Diagnostics s 4 E6 Error Code continued Communication Failure of All Indoor Units Communication failure of all indoor units De energize check the wire connections of indoor and outdoor units and power to outdoor unit No Did this correct the Yes Are all connections correct Correct connections problem No De energize check the wire connection between the outdoor main board and the filter board for correctness No Yes Are all connections correct Correct connections Did this correct the mE problem
38. 705 69 1562 8854 as 644 6734 70 1580 8555 19 62 6 1 1598 8 268 20 80 668 72 1616 7991 2 feos 87 73 1634 7726 2 16 5619 74 652 747 18 feos 17583 8 1544 9165 20 280 192 EM 134
39. 779 0 758 0 737 0 717 0 697 129 Appendix 1 Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units 15K Temp Temp Temp Temp Temp Temp C F C F C F 9 99 42 1436 3454 14 2322 0 678 i sts 2851 43 1454 393 15 290 06 12 96 2718 4 1472 327 6 2408 0642 1 54 52 65 1490 3105 17 426 065 484 522 2473 66 508 298 118 as 90 236 467 126 296 19 18 feos 243 68 1544 2797 120 1 066 2151 9 62 202 12 18 j 644 12054 70 1580 260 122 19 62 1963 71 198 2523 123 20 80 1875 72 66 249 12 2 jess 179 73 1634 298 125 2 16 1714 4 1652 228 156 24 152 1568 7 1688 2133 17015 77 76 2064 26 188 46 78 1724 1997 27 06 1374 9 1742 193 28 24 11316 1760 1871 9 2 06 js 1778 fisu 3o 3860 11207 9 1798 1754 s 3728 1157 _ 1699 128 129 130 131 132 133 134 135 23 174 169 75 io 226 12 E ME EN 130 Appendix 2 Resistance Table of Outdoor and Indoor Tube Temperature Sensors 20K Temp Temp Temp Temp Temp Temp C F C F C F a9 2 fisia 3 914 8 5 1850 2125 as 04 74 92 1359 6 1868 209 _ 7 5 50 7 1886 196 1
40. be kept sealed until ready to be connected Follow the following steps to insure a quality leak proof installation Step 1 Refrigerant Line Connection Carefully bend and cut the tubing to prepare for flaring Use a flaring tool designed for R410a following the recommended manufacturer s procedure Tighten the flare nut to the indicated torque by using a spanner wrench and a toque wrench Connect the indoor unit first then the outdoor unit Use the 3 8 to 1 2 flare adapter if needed Note Over tightening flare nuts may damage flare connections and may cause leaks 1 4 124 159 Step 2 System Leak Check wrench Refrigerant lines should be pressurized prior to evacuating system to check for leaks Use only dry nitrogen with a pressure regulator for pressurizing unit Pressurize with 150 psi of dry nitrogen Apply soap and water to check whether the joints are leaky A leak detector may also be used for a leakage test Hint You may want to perform leak testing and evacuation before wiring to save time electrical connections can be completed while your vacuum pump is running Step 3 System Evacuation Note The outdoor unit contains a refrigerant charge leave liquid and gas valves closed 1 After no leaks have been detected connect a vacuum pump to the outdoor unit 2 Connect appropriate hoses to manifold gauge vacuum pump and unit refrigeration connections f 3 Evacuate the system
41. cover on the back of the remote Remove the small screw at the bottom of the cover Slide the cover downward Replace with two AAA batteries Replace cover and screw zeae Beate eS pec 24 Product Introduction Remote Control Functions 1 On Off The on off state will change with each button press 2 Lower Temperature Setting Each time you press the TEMP button the temperature setting will decrease by 1 F The temperature range is 61 F 86 F In Auto Mode this button will not function 3 Raise Temperature Setting Each time you press the TEMP button the temperature setting will raise by 1 F The temperature range is 61 F 86 E In Auto Mode this button will not function 4 Fan Switch The fan switch will adjust the fan speed between Auto Low Medium and High 5 Mode Selection Press the Mode button to change from Auto Cool Dry Fan or Heat Pump T amb 88 F aa Tpreset 1 F 6 Feel Feel button senses the room temperature surrounding the remote every 10 minutes adjusting the airflow and indoor temperature for maximum comfort and energy savings 7 Function Not Used 8 Function Not Used 9 Clock Press once to set clock 24 hour format use the or button to increase or decrease the time 25 Product Introduction Remote Control Functions 10 X Fan Allows fan to run after cooling cycle to dry off the coil and
42. ct to change without notice please refer to the one supplied with the unit 29 Electrical Schematics GWH09AB D3DNA2D TUBE GUTROOM EXHAUST TEM SENSOR SENSOR TEM SENSOR P g W10 RD SAT Wa YEGN 25 WW BU 1 ae These circuit diagrams are subject to change without notice please refer to the one supplied with the unit 40 Electrical Schematics GWH12AB D3DNA2D COMP TUBE OUTROOM EXHAUST CILE TEM SENSOR TEMSENSOR SENSOR WA YEGN gt D MI i ce e WORD J SAT W13 WH WS BU WW YE W RD O G COMP These circuit diagrams are subject to change without notice please refer to the one supplied with the unit 41 GWH18AB D3DNA2D L1 INDC1 INDC2 YEGN gt G RING NWARNING c OVERLOAD PROTECTOR Please don t touch any terminal when M2 ASAT comp the voltage of terminal P DC and pe T a za N DC at APT is higher than 30V to eu mu i W revent the risk of electrical shock RTG RTE RS WH 7h di k T 2 69 of ed eM sZ aU YE m BOTTOM al EET ME BOND HEATER n ij YEL RO 3 f J 2 COMPU COMP COMP W H le i l a TERMINAL rj BLOCK 1 BU dg je gt UU 4
43. d blink 5 times OFF 3S and blink 4 times During cooling and drying oper ation compressor will stop while indoor fan will operate During heating operation the complete unit will stop operation Refer to the mal function analysis IPM protection loss of synchro nism protection and overcurrent protection of phase current for compressor Module OFF 35 and blink is too high 10 times temperature Internal motor fan motor do not operate Desynchro nizing of compressor PFC protec tion and blink 11 times and blink 7 times and blink 6 times OFF 3S and blink 14 times Internal fan mo tor external fan motor compressor and electric heater stop operation guide louver stops at present location During cooling and drying oper ation compressor will stop while indoor fan will operate During heating operation the complete unit will stop operation During cooling and drying oper ation compressor will stop while indoor fan will operate During heating operation the complete unit will stop operation 1 Bad contact of DC motor feed back terminal 2 Bad contact of DC motor control end 3 Fan motor is stalling 4 Motor malfunction 5 Malfunction of mainboard rev detecting circuit Refer to the mal function analysis IPM protection loss of synchro nism protection and overcurrent protection of phase current for compressor Refer to the
44. ding the motor then remove the motor Remove the screws holding the motor support then lift motor support upwards to remove it 126 Fan blade Motor amd Lr Md R f 7 m s Box protector Disassembly of Outdoor Unit 24 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 9 Remove isolation sheet Remove screws holding the isolation sheet then remove the isolation sheet 10 Remove 4 way valve Follow proper procedures to remove refrigerant Unscrew the nut holding the coil and remove the coil from the valve Unsolder the 4 joints holding the valve assy with the compressor and tubing Remove the 4 way valve Use care not to damage valve wires etc 4 way valve 11 Remove liquid and gas valves Remove the two bolts holding the gas valve unsolder the joints holding the valve assy Wrap the valve with a damp cloth to avoid damaging the valves Remove the two bolts holding the liquid valve unsolder the joints holding the valve assy Liquid valve Gas valve 127 Disassembly of Outdoor Unit 24 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 12 Remove compressor Loosen the front nuts of the compressor reclaim all refrigerant properly unsolder the tubing joints remove the wire connections then remove the compressor 13 Remove left side plate Remov
45. e left 2 The first stage filter can be cleaned with a vacu um cleaner or by washing with a mild soap and lt 113 F water 3 The second stage filter cannot be washed use a vacuum cleaner to clean any dust lint etc The filter is made up of Titanium Dioxide 4 Recharge the Titanium Dioxide filter by placing it in the Sun for 3 4 hours every 3 6 months Titanium Dioxide filter 2nd Stage Filter Missing or Inoperative Remote Control Emergency Operation When the remote controller is lost or damaged please use the auto switch on the indoor unit Press the AUTO STOP button to enter AUTO mode Press the AUTO STOP button again to turn the unit off 36 GWHO09AB A3DNA2B GWH12AB A3DNA2B e Indoor Unit Symbol Color symbol Symbol Color symbol wn WHITE BN BROWN ve euow jRu Re E BLACK YEGN YELLOW GREEN PROTECTIVE EARTH Outdoor Unit Symbol Symbol Color symbol Bw EECEXANSONVALE Ro Roo oo actor EN S amp OVERLORDBNBRONN comp CORES BU _ memm RAK EO REE 7 ROOM TUBE SUN Indoor Board TEM SENSOR TEM SENSOR 0 RT RT2 A CA WA py 27 ROOM TUBE DISP3 DISP4 N1 mpi i N 1 COM INNER gt gt 2 AP L gt gt BN j A fin JUMP 4 W2 YEGN SWING UD
46. e screws holding the left side plate and chassis then remove left side plate dote ter KEHRT n 128 Appendix 1 Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units 15K Temp Temp Temp Temp Temp Temp C F C F C F 19 22 33 94 03 5 1850 159 18 04 1086 932 02 js 1868 1544 az 4 216 5 50 9779 7 86 1497 _ 16 32 15 6 9982 8 1904 1451 15 0 1087 37 196 900 1 408 14 8 1029 1004 8 642 1 363 13 6 9 9 1022 8297 1 322 89 S0 12 104 9222 fso 1040 7967 1 282 u 22 8735 41 105 84 7 653 1 244 10 8 2 106 7352 1 207 9 158 744 fas 1094 7065 8 76 7435 2 fezi f 7 75 5 1150 6529 6 2 6688 46 8 6278 5 0 66 47 166 6038 a 248 6023 i184 5809 3 6 5718 49 1202 5589 2 24 5431 50 120 5379 a 302 5159 198 5197 o 320 02 52 1256 4986 a 98 466 3 1774 4802 2 194 4431 54 02922 465 3 sza 4 5 10 446 4 92 409 6 1328 4294 5 3815 7 6 4139 6 08 62 58 1364 39 7 46 3458 9 1382 3848 8 94 60 1400 3711 9 3138 je 1418 3 579 1 171 1 136 1 103 98 2084 1471 99 202 1039 1 009 0 98 0 952 0 925 0 898 0 873 0 848 0 825 0 802 0
47. e used to monitor the temperature of the refrigerant leaving the EEV to maintain a correct superheat operation Please refer to the troubleshooting section for error codes generated by a sensor fault 55 High Pressure Protection Switch amp Exhaust Temperature Sensor The high pressure switch monitors the refrigerant discharge pressure and will shut down the unit if pressures are higher abnormal If this is detected an E1 error code will be generated Please refer to the troubleshooting section for more detailed information The exhaust temperature sensor monitors the refrigerant discharge temperature and will send information to the inverter control board for system operation The following actions can occur Exhaust Temperature gt 208 F Compressor will not rise above present level Exhaust Temperature gt 217 F Compressor will run at reduced frequency Exhaust Temperature lt 194 F Compressor off for 3 minutes minimum the compressor will restart Error Code F5 will be generated if the sensor is open or shorted Please refer to the troubleshooting section for more detailed information 56 Outdoor Temperature Sensor This sensor is a negative coefficient thermistor that will decrease in resistance as the temperature increases This sensor will monitor the temperature of the outdoor air The reading will be used by the inverter board to adjust frequency calculations Error Code F3 will be generated if the sensor
48. ec perature sensor fault times tion faulty sensor Outdoor tube Flash 5 Loose wiring poor terminal connec temperature sensor times tion faulty sensor fault Outdoor exhaust Flash 7 Loose wiring poor terminal connec temperature sensor F5 tion faulty sensor times fault Flash 2 1 is not an error code normal Automatic defrost VM times indication of defrost cycle Jumper wire fault et Tx Insert correct jumper wire in PCB 58 Fault Displays Table 1 Remarks 1 Some Error codes may only be indicated on Indoor Display 2 Normal communication will be indicated by outdoor unit green LED flashing 1 second on 1 second off 3 On single errors the red and yellow led will flash 5 second on and off two errors will have a 2 second off Models GWH09AB D3DNA2D amp GWH12AB D3DNA2D Indicator has 3 kinds of display Malfunc tion Name Indicator Display during blinking ON 0 5s and OFF 0 5s A C Status Possible Causes status and during blinking ON 0 5s and OFF 0 5s During cooling and drying operation except indoor fan op Possible reasons 1 Refrigerant was superabun erates allloads stop dant 2 Poor heat High DEEOS operation During exchange includ pressure d blink heating operation ing filth blockage and blin protection the complete unit of heat exchanger once of system stops and bad radiating environment Ambient tem perature is too high Du
49. eck the operation of the EEV Valve cool ing mode using a digital thermometer record the temperature of the input line and the output line of the valve as indicated in the picture above With the compressor running the input side of the valve should have a higher reading then the output side indicating that the valve is meter ing If the temperature readings are the same the valve is fully open and the valve is not metering Since the pressures and frequency are controlled by the G10 technology of the outdoor circuit board there are no pressure checks that can be made Heating Mode m To check the operation of the EEV Valve in heating mode using a digital thermometer record the tem perature of the input line and the output line of the valve as indicated in the picture above With the com pressor running the input side of the valve should have a higher reading then the output side indicating that the valve is metering If the temperature readings are the same the valve is fully open and the valve is not metering Since the pressures and frequency are con trolled by the G10 technology of the outdoor circuit board there are no pressure checks that can be made Resistance readings of EEV valve with wire plug disconnected from circuit board Power to unit should be off when making resistance readings Readings below are approximate values and may vary slightly with different outdoor models 48 94 6 O 94 8 O
50. ecta site where there is sufficient ventilation 3 Selecta site where there is no obstruction blocking the inlet and outlet 4 The site should be able to withstand the full weight of the unit 5 Try to limit expose to direct sunlight or strong winds 6 Make sure that the outdoor unit is installed in accor dance with the installations instructions and is conve nient for maintenance and repair 7 Referto your outdoor unit installation manual for maximum lineset lengths and heights This could bea factor in determining outdoor location 8 Selecta place where it is out of reach of children 9 Install Heat Pump legs to allow for proper drainage 10 Install drain fitting in bottom of outdoor unit 31 Mounting Plate Installation Installation The mounting plate should be installed horizontally and level Measure the center of the indoor unit Please note that depending on model the center of the bracket may not correspond with the center of the unit Attach the mounting plate on the wall with screws Be sure that the mounting plate has been attached firmly enough to withstand approximately 132 pounds Refer to specific models for dimensional data The piping can exit the indoor unit from either side see pictured below Drill a 2 1 2 diameter hole at a slightly downward angle to the outdoor side Indoor Outdoor Note The outdoor hole should be approximately 1 4 pipe MA geni Pad lower t
51. er cap and button are effective insert on mainboard Malfunction OFF 3S and protection of blink 15 but can not dispose the 2 Incorrect insert of related command jumper cap 3 Jump jumper cap times er cap damaged 4 Abnormal detecting circuit of mainboard 61 Models GWHO9AB D3DNA2D amp GWH12AB D3DNA2D cont Malfunction Name Gathering refrigerant Indoor ambient temperature sensor is open short circuited Indoor evaporator temperature sensor is open short circuited Outdoor ambient temperature sensor is open short circuited Outdoor condenser temperature sensor 15 open short circuited Indicator has 3 kinds of display status and during blinking ON 0 5s and OFF Indicator Display during blink ing ON 0 5s and OFF 0 5s Operation Cool Heating Yellow Red Green OFF 3S and blink 1 times and blink 1 times and blink OFF 3S and blink twice 3S and blink 6 times and blink OFF 3S and blink 5 times and blink 4 times A C Status When the outdoor unit receives signal of Gath ering refrigerant the system will be forced to run under cooling mode for gathering refrigerant During cooling and drying operation in door unit operates while other loads will stop during heating opera tion the complete unit will stop operation AC stops operation once reaches the setting temperature Cooling drying internal fan motor stops
52. er phase locking protection he malfunction will be cleared after 1 min then the unit will try a restart If an error has been detected for 6 times continuously the compressor will lock out and will need to have power cycled The errors will be cleared after the compressor has run for 7 minutes continuously 6 Module Protection IPM Under module protection mode the compressor will stop When the compressor remains off for 3 minutes the compressor will resume operation If the module protection occurs six time in succession the compressor will remain off Power will need to be cycled to start unit This is a thermal protection for the indoor module 7 DC Buss Voltage Protection The software will monitor the DC bus voltage If voltage on the DC Bus is below 150 or over 420v the compressor will stop and the outdoor fan will stop in 30 seconds When the voltage on the DC bus returns to normal and the compressor has been off for 3 minutes the compressor will resume its operation 21 Product Introduction Protection Functions 8 Communication Fault If the unit fails to receive correct signals for a 3 minutes communication fault will occur and the whole system will stop and a E6 will be displayed on the front panel of the indoor unit 22 Remote Control Operation Remote Buttons Note This remote control is used in other models and some features may or may not be available Consult the owners manual for speci
53. essor and tubing Remove the 4 way valve Use care not to damage valve wires etc Remove the screws holding the condenser and chassis sub assem bly then remove condenser 4 Way valve f N 117 Disassembly of Outdoor Unit 12 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 7 Remove gas amp liquid valves and valve support Remove the two bolts holding the gas valve unsolder the joints holding the valve assy Wrap the valve with a damp cloth to avoid damaging the valves Remove the two bolts holding the liquid valve unsolder the joints holding the valve assy Valve support Gas valve 8 Remove compressor Loosen the front nuts of the compressor reclaim all refrigerant properly unsolder the tubing joints remove the wire connec tions then remove the compressor 118 Disassembly of Outdoor Unit 18 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 1 Remove top cover and handle Remove screws holding handle then lift handle upward and remove Remove screws holding the valve cover then remove the valve cover Remove screws holding the top cover then remove the cover 119 Disassembly of Outdoor Unit 18 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 2 Remove front grille and front panel Remove the screws
54. fic features for your model There should be no obstructions between the remote control and the indoor unit for proper operation Keep the remote from direct sunlight or any source that generates heat keep clean and dry Change batteries frequently Note For detailed explanation of the functions refer to the Other Controls section of this manual for your model Button Identification The function and operation of each button will be explained later in this manual under Product Functions 1 On Off button 2 Lower Temperature Setting 3 Raise Temperature Setting 4 Fan Button 5 Mode Button 6 IFeel Button Senses ambient temperature at remote control location 7 Function Not Available 8 Function Not Available 9 Clock Button 10 X Fan Button 11 Turbo Fan Button 12 Timer On Button 13 Temp Button 14 Sleep Button 15 Swing Angle Button 16 Timer Off Button 17 Light Button Press 9 amp 10 for Energy Saving Mode Press amp to lock control 23 Remote Control Operation Display Icons Feel Auto Mode Cool Mode Dry Mode Fan Mode Heat Mode Sleep Mode Quiet Mode X Fan Mode Turbo Mode Timer On Temperature Setting Display Swing Display Light Display Lock Display Digital Display Set Time Display Fan Speed Display Not Used Clock Icon i eid Ii pe j m C N XO G AM mut Replacing Batteries Locate the battery
55. g Please refer to troubleshoot ing 1 Poor insert for GPF 2 Indoor control board malfunc tion 3 Indoor motor M1 malfunction Indoor control board jump cap poor connected please reinsert or replace the jump cap 1 Room temp sensor is not connected with the control panel 2 Room temp sensor is damaged Models GWHISAB D3DNA2D amp GWH24AB D3DNA2D cont Indoor Unit Displaying Method Outdoor Unit Display LED Indicator Display during Indicator has 3 kinds of display status and Malfunction blinking 0 55 and OFF 0 55 during blinking ON 0 55 OFF 0 55 A C Status Malfunctions ame Running Cooling pna D40 D5 D41 D6 D42 D16 D43 D30 LED LED Overload nor Please refer to Overload limit de scending mal operation troubleshooting OFF 3S and blink 6 times EE compressor is running frequency frequency descending Overload nor 1 Input power Over cur mal operation supply is too low OFF 3S and blink 8 times rent need compressor 2 System voltage F8 is too high over frequency is running descending Air ex haust over high need frequency descending F9 OFF 3S and blink 9 times frequency descending Overload nor mal operation compressor is running frequency descending Cooling de humidifying compressor stop running is too much 1 Overload is too much ambi ent temp
56. gas and liquid valves Remove the two bolts holding the gas valve unsolder the joints holding the valve assy Wrap the valve with a damp cloth to avoid damaging the valves Remove the two bolts holding the liquid valve unsolder the joints holding the valve assy 122 Sound proof sponge Liquid valve Gas valve Disassembly of Outdoor Unit 18 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 9 Remove 4 way valve Follow proper procedures to remove refrigerant Unscrew the nut holding the coil and remove the coil from the valve Unsolder the 4 joints holding the valve assy with the compressor and tubing Remove the 4 way valve Use care not to damage valve wires etc 10 Remove compressor Loosen the front nuts of the compressor reclaim all refrigerant properly unsolder the tubing joints remove the wire connections then remove the compressor Compressor 11 Remove motor and motor support ps Tus Loosen the nut to remove nut washer and cushion Remove the fan blade Remove the screws holding the motor then remove the motor Remove the screws holding the motor support then lift motor support upwards to remove it Motor support 175 Disassembly of Outdoor Unit 24 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 1 Remove handle and valve cover Remove screws holding handle t
57. grille n 22727722274 T 7 Front grille A 7 y D i Z Uff Z 7 4 77 Y 2 y Mf 7 j SSS Hh A 5 Remove front panel Remove the screws holding the front panel to the chassis and 2 Remove top cover motor support then remove panel Remove screws holding the top cover then remove cover 6 Remove right side panel Remove the screws holding the panel from the valve support and 3 Remove reactor sub assembly electric box then remove right panel Remove the screws holding the reactor sub assembly then lift the sub assembly upward to remove Remove screws holding reactor then remove reactor Right side panel il A 113 Disassembly of Outdoor Unit 9 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 7 Remove axial fan blade 9 Remove electric box assembly Loosen the nut to remove nut washer and cushion Remove the Remove the screws holding the cover then remove cover Remove fan blade the screws holding the electric box disconnect the compressor and fan motor wires Lift the box upwards to remove it Electric box assembly Fan Blade gA if a oo I Ei
58. han the indoor hole j Insert the piping hole sleeve into the hole to prevent the piping and wiring from being damaged when pass ing through the hole 32 Installation Install Drain Hose outlet pipe of indoor unit Install Line Set Indoor unit eng nut Piping spanner 7 Da me wrench 1 Connect the drain hose to the outlet pipe of the indoor unit using appropriate connections 2 Insulate the condensate to prevent condensation 3 Fasten the condensate lineset and wring together to prevent damage and movement Slant the drain hose downward for smooth drainage T outlet pipe of outlet pipe of PIP drain hose indoor unit indoor unit connected insulating tube 1 Install lineset and wiring from the outside through the wall sleeve 2 Bend the indoor lineset Note a tube bender will speed up the process 3 Carefully remove flare nut from indoor coil Listen for holding charge from indoor unit No charge may indi cate a leak and should be tested 4 Usea flaring tool if necessary to create the flare con nect tubing tightening to the torque listed below 50 60 33 1 Use only dry nitrogen with a pressure regulator for pressurizing unit Pressurize with 150 psi of dry nitro gen 2 Apply soap and water to check whether the joints are leaky A leak detector can also be applied for a leakage test Hint You may want to
59. harge Temperature Protection of Compressor Status Cooling operation compressor stops while indoor fans runs Heating operation complete unit stops Faulty outdoor temperature sensor Refrigerant leak Poor airflow of outdoor unit Follow Troubleshooting procedure pee pw Start Troubleshooting N Has the compressor discharge Is resistance of temperature y Replace sensor temperature reached 239 F Sensor correct Yes Replace the outdoor Check the system for refrigerant leaks Repair unit circuit board evacuate and charge per instructions in Charging section 92 Error Code Diagnostics s E5 Error Code Overcurrent Protection E5 Fault amp Status Overcurrent Protection Status During cooling amp dehumidifying indoor unit operates while other functions stop During heating operation complete unit stops Start Troubleshooting Check if compressor s connection line is properly connected Yes Check if current value is higher than No the protectors setting No Is units high pressure normal No Check if unit voltage is normal e Replace main board e cs B Possible Causes Supply voltage is unstable Supply voltage is too low Coils are dirty Improper refrigerant charge Adjust compressor s connection line Replace overcurrent protector Refer to high pressure protection error Check connections contact electric utility company 93 E
60. harging Malfunction PU Charging Malfunction of Capacitor Status During cooling mode compressor will stop indoor fan will run Heating mode all units stop Improper input voltage Poor connection on reactor Reactor damaged Bad AP1 control board pie c Start Troubleshooting after unit is powered on for 1 minute Use a DC voltmeter to measure the voltage across the terminals of the electrolytic capacitor The detection Yes d circuit of the Replace outdoor main outdoor mainboard board has malfunctioned Check if the inductor wiring is loose or Induction is cut off Shut down power and wait 20 minutes or connect a DC voltmeter Yes Replace the inductor Is the malfunction es to the electrolytic capacitor until the or reconnect wires corrected voltage is less than 20 v NO Replace the outdoor mainboard End Troubleshooting 108 Disassembly of EVO Indoor Unit 12 000 btuh Other models may vary slightly Warning Wait 10 minutes after power is disconnected before starting disassembly Before disassembly of indoor unit Step 1 Open the panel Step 2 Loosen the clasps on the filter push the filter inward then pull upward removing the filters Filter Step 1 Remove screws near filte Step 2 Remove screws under hinged cove 109 Disassembly of EVO Indoor Unit 12 000 btuh Other models may vary slightly Warning Wait 10 minutes after power is disconnected bef
61. hen lift handle upward and remove Remove screws holding the valve cover then remove the valve cover ht ee n Valve cover 2 Remove top cover Remove screws holding the top cover then remove the cover Top cover 3 Remove front grille Remove screws holding the front grille then remove the grille i 124 Disassembly of Outdoor Unit 24 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 4 Remove front side plate and front panel Remove screws connecting the front side plate outer case and chassis then remove the front side plate Remove screws holding the front panel chassis and motor sup port then remove the front panel 5 Remove right side plate Remove screws connecting right side plate and chassis valve sup port and condenser then remove the right side plate 125 Disassembly of Outdoor Unit 24 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 6 Remove axial flow blade Remove the nuts and washers holding the fan blade on then remove the blade 7 Remove electric box and box protector Remove the screws holding the electric box sub assembly loosen the wire bundle disconnect the wire terminals then remove the box sub assembly 8 Remove motor and motor support Loosen the nut to remove nut washer and cushion Remove the fan blade Remove the screws hol
62. il the Toutdoortube gt 50 at this temperature the compres sor will decrease it compressor speed for 30 seconds then will stop In another 30 seconds the 4 way valve will energize the 60 seconds later the compressor and outdoor fan will start The compressor speed for defrosting will be 85hz During Defrost mode a H1 will be displayed on the indoor front panel display indicating the user selected mode has been overridden and the system is performing a outdoor coil defrost operation 4 Defrost Sequence When a defrost condition has been met the compressor will stop all expansions valves will open fully the outdoor fan will stop 40 seconds after the compressor stops The 4 way valve will reverse direction cooling mode then the compressor will start and enter the defrost frequency The control board along with ambient sensors will calculate defrost time 5 Oil Return Oil return condition can be met if the unit operates at a low frequency for an extended time The indoor display will indi cate H1 for this condition and is a normal procedure 19 Basic Functions Cold Air Prevention Heating mode with compressor running The system guards against discharging cold air in heating mode It will delay the indoor fan until the evaporator coil has warmed up to discharge warm comfortable air into the room 1 When the Tindoorambient lt 75 F and the Tindoortube lt 104 F with the fan in a stopped state the ind
63. ille Lift the Remove the screws holding the cover then remove cover Remove top cover off then remove the grille the screws holding the electric box disconnect the compressor and fan motor wires Lift the box upwards to remove it Top cover Electric box sub assembly Vo 2 Remove front and front panel Remove the screws holding the front grille and front panel Re move the grille Remove the remaining screws holding the panel then loosen the clasp on the right side rotate the panel to the left then remove the panel 4 Remove the axial fan blade and motor Loosen the nut to remove nut washer and cushion Remove the fan blade Remove the screws holding the motor then remove the motor Remove the screws holding the motor support then lift motor support upwards to remove it Front panel Front grille Axial fan blade 116 Disassembly of Outdoor Unit 12 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 5 Remove reactor and isolation sheet Remove screws holding the reactor then remove Remove the screws holding the isolation sheet then remove the isolation sheet Isolation sheet 6 Remove 4 way valve assembly and condenser Follow proper procedures to remove refrigerant Unscrew the nut holding the coil and remove the coil from the valve Unsolder the 4 joints holding the valve assy with the compr
64. ing 1 Clean outdoor coil 2 Check for adequate airflow around unit Outdoor unit coil blockage Insufficient airflow Indoor air filter blocked Clean indoor filters Low Fan Speed Set fan speed to high Check fan capacitor Check fan blade Check for damaged Low indoor air movement motor Ensure that both linesets and fittings are insulated 9 well both large and small Heating Check system for leaks I Refrigerant circuit has following procedure Insufficient refrigerant flow a leak explained the Charging section of this manual Leak between valves inside Replace compressor compressor Internal leaking of 4 wa id y Replace 4 way valve Observe the temperature of refrigerant lines for proper flow Blockage of refrigerant flow Outdoor temperature too high Check for proper outdoor unit location check for proper sizing of unit capacity Check for leakage around windows doors Excessive indoor heating loss poor insulation Calculate heat loss and check for proper sizing Check for leakage around windows doors P poor insulation internal load such as Excessive indoor cooling load computers etc Calculate heat gain and check for proper sizing 78 Troubleshooting C Antihigh temperature and overload malfunction High Discharge Temperature Protection of Compressor Status Cooling operation com
65. ion Indoor Unit Components Evo 12 000 btuh model Other Evo models may very slightly Indoor Circuit Board m S Fan Motor Ambient Swing Motor Temperature Sensor 14 EVO 12 000 btuh Outdoor Unit Other EVO models may very slightly Reactor Exhaust Temp Sensor Compressor High Pressure Switch Note Component locations may vary depending on models 15 Outdoor Air Sensor Electronic Expansion Valve Outdoor tube Sensor 16 The compressor should stay off for at least 3 minutes before starting the unit The compressor circuit has a 3 minute delay if the compressor is de energized during a run cycle If the compressor starts from a de energized cycle there will be no time delay The compressor has a minimum runtime of 6 minutes regardless of room temperature 1 Cooling Mode Cooling Process When the indoor ambient rises 2 F above the preset temperature from a stopped state the unit will start the cooling cycle The outdoor fan and compressor will start The indoor fan will run continuously at the selected speed The outdoor unit will monitor the appropriate temperatures and pressure and adjust the compressor speed and the EEV as required If the indoor ambient is gt 2 F than the preset temperature the compressor will increase the frequency lt 2 F the compressor will begin reducing the frequency The EEV will be closed on indoor units with no cooling req
66. is open or shorted Please refer to the troubleshooting section for more detailed information 57 GENE S DJ Models GWH09AB A3DNA2B amp GWH12AB A3DNA2B Table 1 Stop for anti freezing protection of indoor coil State of Outdoor Unit LEDs F Flashing Times Unit Di Green Red Yellow isplay LED LED LED Flash 4 Flash 3 times times Flash 7 times Possible Cause of Fault Refrigerant leak low indoor air flow dirty filter Low refrigerant expansion valve problem abnormal ambient tem perature Stop for exhaust protection OII IIGIIImI Stop for low voltage E5 Flash 5 Low voltage abnormal ambient protection times temperature Communication Mal EG Communication line failure main function PCB failure Incorrect wiring Compressor overload H3 Flash 8 Compressor shell overheat low re protection times frigerant EEV failure Flash 6 Ambient air temperature abnormal Overload protection E8 P times blocked heat exchanger Stop for IPM module H5 Flash4 IPM module overheated low volt protection times age poor heat sink Indoor fan motor H6 PCB board damaged incorrect or inoperative loose wiring damaged fan blade Indoor ambient Loose wiring poor terminal connec temperature sensor Fl U tion faulty sensor fault Indoor tube Loose wiring poor terminal temperature sensor F2 tion faulty sensor fault Outdoor ambient tem Flash 6 Loose wiring poor terminal conn
67. is too high 2 Refrig erant is short 3 Electric expan sion malfunction 1 Testing wire terminal L and N position If higher than 265VAC please cut off the power Fan motor works Heat ing all will supply and stop restart until back to normal 2 If DC bus bar input voltage is OFF 3S and blink 11 times normal testing voltage is too high the voltage of electrolytic capacitor on after turn on the unit There may be some problem and replace the if the elec trolytic capacitor voltage range at 200 280V 73 Models GWHISAB D3DNA2D amp GWH24AB D3DNA2D cont Indoor Unit Displaying Method Outdoor Unit Display LED Indicator Display during Indicator has 3 kinds of display status and alfunction blinking 0 55 and OFF 0 55 during blinking 0 55 and OFF 0 55 A C Status Malfunctions ame Running Cooling Heating D40 D5 D41 D6 D42 D16 D43 D30 LED LED LED Cooling The circuit dehumidifyi Whole unit s ne ee OFF3S compressor malfunction current test and blink stop running replace the ing malfunc 13 times Fan motor outdoor unit works Heating AP1 all will stop tion Cooling Please refer to dehumidifying troubleshoot Compres OFF 3S compressor ing sor current and blink stop running overcurrent 15 times Fan motor protection works Heating all will stop Under the It is normal heating m
68. is too low 2 Wiring terminal on reversing valve is loose or broken 3 Replace reversing valve 1 Replace outdoor control panel AP1 PH PL P5 P7 P8 Error Codes Fault amp Status Possible Causes Measure the voltage on L amp N on line voltage if it is higher then 265vac correct high voltage If AC voltage is normal measure the voltage on the electrolytic capacitor on control panel AP1 if it is normal replace the AP1 board During cooling mode compressor will stop indoor fan will run Heating mode all units Measure the voltage on L amp N on line voltage if it is lower then 200vac correct incoming voltage If AC voltage is normal measure the voltage on the electrolytic capacitor on control panel AP1 if it is normal replace the AP1 board During cooling mode compressor will stop indoor fan will run Heating mode all units Stop P5 1 Refer to H7 troubleshooting During heating mode complete unit will stop During cooling mode compressor will stop 1 Replace outdoor control panel AP1 indoor fan will run Heating mode all units B z N 1 After unit is de energized for 20 minutes check for proper thermal grease on IPM During cooling mode compressor will stop module of outdoor control panel AP1 and indoor fan will run Heating mode all units contact is good If this is OK replace AP1 stop control module of outdoor unit 107 PU Error Code Capacity C
69. it will enter the cooling and drying mode in which case the compressor will operate and the indoor fan will run at a low speed When the indoor ambient temperature is at or below the preset temperature the unit will operate in it previous running state When the indoor ambient drops to more than 2 F below the preset temperature the compressor will stop running then 30 seconds later the outdoor fan will stop the indoor fan will run at low speed Tpreset Start cooling Previous running status Tpreset 2 F 23 6min Stop cooling Compressor Outdoor fan Indoor fan A PR 17 Product Introduction Basic Functions 3 Heating Mode Heating Process When the indoor ambient drops 2 F below the preset temperature the unit will start the heating cycle The outdoor fan compressor and 4 way valve will operate The indoor fan will operate in the Cold Air Prevention mode in which the indoor fan will have a 2 minute delay after the call for heating The indoor evaporator coil temperature must reach 104 F before the indoor fan will start this will prevent cold air from discharging from the indoor coil When the indoor evaporator coil temperature is gt 104 E the indoor fan will operate at low speed for 1 minute With 1 minute of operation or 2 minutes of no fan operation and the indoor evaporator coil temperature is 108 F the indoor fan will operate at its preset condition If the indoor a
70. llowed C If Ttube gt 136 F the compressor will run at reduced frequency D If Ttube gt 144 F the compressor will stop and the indoor fan will operate at preset speed 2 Indoor Coil Temperature Protection In heating mode the software will monitor the indoor coil for an abnormal high temperature condition A If Ttube lt 122 E the unit will return to its original operation state B If Ttube gt 127 F frequency rise is not allowed C If Ttube gt 133 F the compressor will run at reduced frequency D If Ttube gt 140 F the compressor will stop and the indoor fan will blow residual heat and then stop 3 Compressor Discharge Temperature Protection The software will monitor the compressor discharge for an abnormal high temperature condition A If Ttube gt 208 E frequency rise is not allowed B If Ttube gt 217 F the compressor will run at reduced frequency C If Ttube gt 230 E the compressor will stop D If Ttube lt 194 F and the compressor has been off for at least 3 minutes the compressor will resume operation 4 Compressor High Pressure Protection When the high pressure switch is detected for 6 seconds or more the compressor will stop and can only be started by powering off the unit Dirty coils refrigerant overcharge and outdoor fan problems can cause this fault 5 Compressor Phase lacking Protection If one of the compressor phases are detected open before startup the compressor will ent
71. mbient temperature is lt 9 F and gt 2 F of the preset temperature the unit will run in its original mode of operation If the compressor is running and the mode is changed from heating to cooling the compressor will stop the 4 way valve will be de energized 2 minutes later the outdoor fan will stop after a 1 minute delay If the indoor ambient temperature is gt 9 F than the preset temperature the compressor will stop and the outdoor fan will stop after a 60 second delay The indoor fan will continue to operate at its preset mode The G10 technology will determine compressor frequency based on ambient temperatures wa I op heating Tpreset 9 F e cad S Previous running status Tpreset 2 F P amb gt 6 min gt 3 26 min Start heating Compressor Outdoor unit ALIS te Blow residual heat 4 way valve MLLLLLLLLLLLLLLLLLLLLL 2 se 18 0E Defrost Process You may force a defrost in heat mode by pressing the and buttons alternately three times within 5 seconds 1 The unit will enter defrost when the following conditions are met A Outdoor ambient lt 41 F B Compressor had accumulated more than 3 hours of operation in heating mode C The outdoor coil lt 32 F Note The compressor runtime will be cleared when the outdoor ambient is gt 41 F or when the compressor has started up after changing to cooling or drying mode
72. ndings using a megohm meter Check for unusual noise within compressor 85 Compressor Overload Discharge protection malfunction Start Is the Overload connections OK No Yes Check the resistance between the two ends of the overload protector in ambient temperature Is the resistance below 1K Is the wiring of the electronic expansion valve connected well Yes Replace the overload protector Check the coil of the electronic expansion Reconnect according to the wring diagram valve per instructions in this manual Replace if faulty Yi Eliminate the malfunction No Check the refrigerant status if there is leakage recharge according to this service manual Eliminate the malfunction No Replace outdoor main board End Troubleshooting 86 Troubleshooting Compressor Desynchronizing Malfunction The unit appears to be desynchronizing as soon as energized and starting Is the stop duration of the compressor longer than 3 minutes Yes Is the wiring of the compressor Reconnect wire properly properly connected Yes Is the malfunction corrected Is the electronic expansion valve Replace the Electronic expansion faulty valve Is the malfunction corrected Replace outdoor main board Yes Is the malfunction corrected Replace the compressor End Troubleshooting 87 C5 Error Code C5 Jumper Cap Malfunction Status Wireless remote will no
73. ng operation the complete unit will stop To protect the electronic compo nents when detect high power Indoor unit and outdoor unit doesn t match Refer to the mal function analysis Replace outdoor control panel AP1 Supply voltage is unstable 69 Models GWH09AB D3DNA2D amp GWH12AB D3DNA2D cont Malfunction Malfunction of complete units current detection The four way valve is abnor mal Zero crossing malfunction of outdoor Frequency limiting Compressor is Open cir cuited perature for turning on the unit is reached Frequency limiting module tem perature 70 Indicator Display during blink ing ON 0 5s and OFF 0 5s and blink 13 times and blink 20 times and blink 18 times Indicator has 3 kinds of display status and during blinking ON 0 5s and OFF 0 5s OFF 3S and blink 8 times OFF 3S and blink 11 times A C Status During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the complete unit will stop If this malfunction occurs during heat ing operation the complete unit will stop operation During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the complete unit will stop Possible Causes Theres circuit malfunction on outdoor units control panel AP1 please replace the outdoor units contr
74. ntrol board Damaged main control board Replace control board Outdoor unit and indoor unit nor running Improper setting of temperature Adjust temperature setting 82 Miscellaneous Malfunctions cont Drainage pipe blocked or broken Repair or replace pipe Damaged or insufficient pipe 9 THEN PP Re wrap pipe insulation Indoor fan loose or hitting sides Tighten and adjust Foreign object in indoor unit Remove object Adjust support washer of Water leakage Abnormal sound and or shake Compressor vibrating or shaking compressor and tighten screws Outdoor tubing touching Reroute and adjust the tubing Inner plates touching Adjust plates isolate with insulation Outdoor louver touching outer case Adjust louver Abnormal sound inside compressor Replace compressor Oo Miscellaneous Malfunctions cont Yellow indicator blinks once Compressor start normal Yellow indicator blinks twice Defrosting normal display Yellow indicator blinks 3 times Anti freezing protection Yellow indicator blinks 4 times IPM Protection Yellow indicator blinks 5 times Overcurrent protection Yellow indicator blinks 6 times Overload protection Yellow indicator blinks 7 times gt Exhaust protection Yellow indicator blinks 8 times Compressor overload protection 214 Cooling or heating current gt dropped frequency current indicator displa Redindicatorblinkstwice Exhaust temp
75. ode function compressor Defrosting running in door outdoor fan motor stop working OFF 3S and blink 2times Electrostatic dedusting protection Cooling 1 Wire ter dehumidifying minal OVC compressor COMP loosen stop running or circuit has Fan motor problem the OFF works Heating resistance of 3S and all will stop SAT should be blink 3 lower than 1 times ohm 2 Please Compressor overload protection refer to trou bleshooting exhaust over load protec tion 74 Models GWHISAB D3DNA2D amp GWH24AB D3DNA2D cont Malfunction Name System abnor mal IPM protec tion PFC protec tion Compressor lose steps Heating an ti high temp declines Startups fail Compres sor current testing circuit malfunction EEPROM malfunction Capacitor charge mal function an Qi a d c Indicator Display during blink ing ON 0 5s and OFF 0 5s Running Cooling Heating D40 D5 D41 D6 D42 D16 D43 D30 LED LED LED OFF 3S and blink 4 times OFF 3S and blink times OFF 3S and blink 6 times OFF 3S and blink 7 times OFF 3S and blink 10 times OFF 3S and blink 11 times OFF 3S and blink 13 times OFF 3S and blink 15 times OFF 3S and blink 17 times Indoor Unit Displaying Method Outdoor Unit Display LED Indicator has 3 kinds of display status and during blinking ON
76. ol panel API 1 Supply voltage is lower than 175 2 Wir ing terminal 4V is loosened or broken 3 4V is damaged please replace 4V Replace outdoor control panel API Models GWH18AB D3DNA2D amp GWH24AB D3DNA2D Malfunction Name System high pressure protection Anti freez ing protec Compressor air exhaust high temp protection AC overload protection Indoor Unit Displaying Method Indicator Display during blinking ON 0 5s and OFF Display pec OFF 3S and blink once OFF 3S and blink and blink 4 times and blink 5 times 0 5s Heat ing LED Outdoor Unit Display LED Indicator has 3 kinds of display status and during blinking ON 0 5s and OFF 0 5s D40 D5 D41 D6 D42 D16 D43 D30 dalli Cooling dehu midifying ex pect the indoor fan motor is running others will stop to run Heating all stop running Cooling de humidifying compressor outdoor fan motor will stop running indoor fan motor will keep running Cooling dehu midifying ex pect the indoor fan motor is running others will stop to run Heating all stop running Cooling dehu midifying ex pect the indoor fan motor is running others will stop to run Heating all stop running i 1 Refrigerant is too much 2 Poor heating exchanging for units in cluding heat exchanger is dirty and unit heating radiat ing ambient is poor Ambien
77. ompared to the following charts Care must be taken when checking voltage measurements all wires and ter minals must be isolated for safety Resistance measurements must be tak en with power off and PG connector removed from the circuit board The following chart indicates approximate voltage measurements readings may vary slightly depending on models and should be used as a reference only Voltages should be taken with unit running PG Wire Connector White Red The following chart indicates approximate resistance measurements readings may vary slightly depending on models and should be used as a reference only Turn power off and remove connector from circuit board before reading measurements PG Wire Connector Resistance ohms Brown White 160 400 White Red 240 46 Troubleshooting Indoor Components To check the condition of the indoor step swing motor resistance measurements may be com pared to the following chart Resistance measurements must be taken with power off and the con nector removed from the board The following charts indicates approximate readings and may vary with different models Turn power off and remove connector from circuit board x Bwe 3900 390 390 195 x Pink o S oog 390 Q 195 __ 3900 195 47 Troubleshooting Outdoor Components Cooling Mode MR x Input b W D i n w I i Un To ch
78. oor fan will begin to run at low speed after a 2 minute delay This will reduce cold air upon heating startup Within 2 minutes if Tindoortube gt 104 the indoor fan will run at low speed After 1 minute of operation the fan will run at the preset fan mode Within 1 minute of low speed operation or 2 minutes of no fan operation with the Tindoortube gt 108 F the fan will run at the preset mode 2 If the Tinaoorambient gt 75 F and the Tindoortube lt 108 F the indoor fan will run at low speed for 1 minute than run at the preset mode After 1 minute of low speed operation if the and the Tindoortube gt 108 F the fan will operate at its preset mode Note The Tindoorambient in 1 amp 2 above refers to the unit going into the heating mode coming out of defrost Overcurrent and Speed Protection Total Current The software will monitor the compressor current draw and adjust the compressor speed in order to maintain the inverter and compressor in a safety and reliable operating range A If Itotal lt 6 an increase in frequency will be allowed B If Itotal gt 7 increasing the frequency is not allowed C If gt 8 the compressor will decrease its frequency D If kota gt 9 the compressor will stop and the indoor fan will stop after 30 seconds 4 Fan Mode Under this mode the fan will run at the preset speed and the outdoor fan compressor and 4 way valve will stop 5 Auto Mode Auto Mode Proces
79. operation complete Indoor coil dirty unit stops 69 E1 Error Codes Compressor High Pressure Protection E1 High Pressure Protection Fault amp Status Possible Causes High Pressure Protection of System Status During cooling amp dehumidifying indoor unit operates while other functions stop During heating operation complete unit stops Refrigerant overcharge Dirty outdoor Blockage of airflow Outdoor ambient too high AN Yes ae Replace Outdoor Verify high pressure with gauge High Pressure switch abnormal Beard Yes Replace pressure switch Check mode of indoor unit setting Yes Refer to instruction manual of indoor unit No Check if gas and liquid valves are open Completely open all valves Yes UE No Check if panel of outdoor unit is firmly closed Close the panel Yes Check air flow of indoor and outdoor units for No Remove the barrier obstructions Yes No Check for indoor and outdoor fan operation Measure the fan motor input Yes i Check operation of swing louver Measure swing motor signal input Yes Check indoor filter and coils for dirt Refer to care and maintenance Check inlet and outlet of main pipes Sua EEEE No connecting each indoor unit and capillary of JS N indoor and outdoor units Replace the parts such as filter etc as needed 90 E3 Error Codes Compressor Low Pressure Protection E3 Faul
80. operation while other loads stop operation heating AC stop operation During cooling and dry ing operating compres sor stops while indoor fan operates During heating operation the complete unit will stop operation During cooling and dry ing operating compres sor stops while indoor fan operates During heating operation the complete unit will stop operation Possible Causes Normal cooling mode 1 Loosening or bad contact of indoor am bient temp sensor and mainboard terminal 2 Components in mainboard fell down leads short circuit 3 Indoor ambient temp sensor damaged check with sensor resistance value chart 4 Main board damaged 1 Loosening or bad contact of indoor am bient temp sensor and mainboard terminal 2 Components in mainboard fell down leads short circuit 3 Indoor ambient temp sensor damaged check with sensor resistance value chart 4 Main board damaged Outdoor temperature sensor hasn t been connected well or is damaged Please check it by referring to the resistance table for temperature sensor Outdoor temperature sensor hasn t been connected well or is damaged Please check it by referring to the resistance table for temperature sensor Models GWHO9AB D3DNA2D amp GWH12AB D3DNA2D cont Malfunction Name Outdoor discharge temperature sensor is open short circuited Limit decrease frequency due to overload Decrease fre quency due
81. or correct voltage Troubleshooting Procedure for Synchronizing Fault During Operation Start Troubleshooting Is the outdoor fan working Are wire connections Wire per diagram Yes Yes Are there any airflow obstructions Replace Fan Fan Operating Yes Capacitor C1 Properly Yes No Replace Outdoor Fan Yes Improve airflow Motor No Correct voltage Is input voltage normal problem Yes Charge per Is unit overcharged installation manual Replace cri Board Malfunction corrected Replace Compressor Yes End Troubleshooting 105 U1 U3 U5 U7 U9 Error Codes 06 Fault amp Status Compressor Phase Detection Error Status During cooling mode compressor will stop indoor fan will run Heating mode all units stop DC Bus Bar Voltage Unstable Status During cooling mode compressor will stop indoor fan will run Heating mode all units stop Circuit Board Malfunction on Outdoor Unit Status During cooling mode compressor will stop indoor fan will run Heating mode all units stop Reversing Valve Malfunction Status During heating mode complete unit will stop Zero crossing malfunction of Outdoor Unit Status During cooling mode compressor will stop indoor fan will run Heating mode all units stop Possible Causes 1 Replace outdoor control panel AP 1 1 Supply voltage is unstable 1 Replace outdoor control panel AP 1 Supply voltage
82. ore starting disassembly Small guide louver 4 Remove guide louver continued Step 1 Remove the four srews holding the display Carefully set to the side Step 2 Very carefully un snap the cover and remove it 5 Remove panel Step 1 Carefully remove the cover by slightly rotat ing up and un snap from the back 110 Disassembly of Outdoor Unit 9 000 amp 12 000 btuh 120 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 1 Remove top cover and handles Remove screws holding handle then remove screws holding top cover Lift top cover off Handle 2 Remove front panel Remove top screw holding the front panel then remove panel Front panel 3 Remove front grille and right side panel Remove the screws holding the front grille then remove the grille Remove the screws holding the right side plate from rear of con denser and valve support Lift plate upwards to remove rik E inl as i T Rude mee wm 4 Remove electric box sub assembly Remove the screws holding the cover then remove cover Remove the screws holding the electric box disconnect the compressor and fan motor wires Lift the box upwards to remove it Cover Electric box 5 Remove axial fan blade Loosen the nut to remove nut washer and cushion Remove the fan blade 6 Remove motor and motor support Remove the screws holding the motor then
83. otection and overcurrent protection of phase current for compressor Refer to the mal function analysis DC fan motor malfunction or system blocked or the connector loosened Models GWHO9AB D3DNA2D amp GWH12AB D3DNA2D cont Indicator h ki f di Malfunction Indicator Display during blink nese Possibl Name ing ON 0 5s and OFF 0 5s ossible Causes status and during blinking ON A C Status 0 5s and OFF 0 5s Power protec tion Indoor unit and outdoor unit doesn t match Failure start up Malfunction of phase cur rent detection circuit for compressor Malfunction of voltage dropping for DC bus bar OFF 3S and blink 20 times and blink 19 times and blink 11 times and blink 13 times and blink 20 times OFF 3S and blink 9 times and blink 16 times Compressor stop operation and Outdoor fan mo tor will stop 30s later 3 minutes later fan motor and compressor will restart Compressor and Outdoor fan mo tor can t work During cooling and drying oper ation compressor will stop while indoor fan will operate During heating operation the complete unit will stop operation During cooling and drying oper ation compressor will stop while indoor fan will operate During heating operation the complete unit will stop During cooling and drying oper ation compressor will stop while indoor fan will operate During heati
84. pressor stops while indoor fans runs Heating operation complete unit stops Is unit running in proper outdoor ambient range Faulty outdoor temperature sensor Refrigerant leak Poor airflow of outdoor unit Follow Troubleshooting procedure N Start Troubleshooting Vas Normal protection outdoor Is outdoor temperature above 127 F ambient is higher than normal parameters Remove power then restart after 20 minutes Are indoor and outdoor coils clean No Clean Coil and free from obstructions Yes Check fan for obstruction Are indoor and outdoor fans Check resistance of fan operating properly leads and voltage to motor Check fan connections Outdoor Fan Connection Yes Replace AP1 control board Replace fan End Troubleshooting 79 Troubleshooting Co StamtFailwre Malfunction Energize and start the unit No Is the stop duration of the compressor longer than 3 minutes Yes Are the wire connections Heconnect the wires on the compressor according to the wiring connected properly diagram Eliminate the malfunction Yes Is the unit overcharged Yes Charge the unit according The stop duration of the unit is not long enough the high to the Charging section of this manual Yes Eliminate the malfunction No Replace the outdoor main board Eliminate the malfunction No Replace the compressor and low side pressure of the sy
85. remove the motor Remove the screws holding the motor support then lift motor support upwards to remove it Motor support 111 Disassembly of Outdoor Unit 9 000 amp 12 000 btuh 120 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 7 Remove 4 way valve assembly Follow proper procedures to remove refrigerant Unscrew the nut holding the coil and remove the coil from the valve Unsolder the 4 joints holding the valve assy with the compressor and tubing Remove the 4 way valve Use care not to damage valve wires etc 8 Remove gas valve and liquid valve Remove the two bolts holding the gas valve unsolder the joints holding the valve assy Wrap the valve with a damp cloth to avoid damaging the valves Remove the two bolts holding the liquid valve unsolder the joints holding the valve assy Bolts Liquid valve Gas valve 112 9 Remove compressor Loosen the front nuts of the compressor reclaim all refrigerant properly unsolder the tubing joints remove the wire connec tions then remove the compressor Foot nut Disassembly of Outdoor Unit 9 000 btuh 240 volt unit Warning Wait 10 minutes after power is disconnected before starting disassembly 1 Remove electrical and valve covers 4 Remove front grille Remove screws holding handle and valve cover then remove Remove the screws between the front grille and front panel then covers remove the
86. ring cooling and 1 Poor air return drying operation in indoor unit Anti OFF 3S OFF 3S compressor and out 2 Fan speed is freezing and blink and blink door fan stop while abnormal 3 protection twice 3 times System block or refrig erant leakage High discharge tem perature protection of com pressor Over current protection 60 OFF 3S and blink 7 times OFF 3S and blink 4 times OFF 3S and blink 5 times OFF 3S and blink 5 times OFF 3S and blink 3 times and blink 9 times indoor fan operates The Dual 8 Code Display will show E3 until the low pressure switch stop opera tion During cooling and drying operation compressor and out door fan stop while indoor fan operates During heating oper ation all loads stop During cooling and drying operation compressor and out door fan stop while indoor fan operates During heating oper ation all loads stop Evaporator is dirty 1 Low pressure protection 2 Low pressure protection of sys tem 3 Low pres sure protection of compressor Please refer to the malfunction analysis dis charge protec tion overload 1 Supply voltage is unstable 2 Supply voltage is too low and load is too high 3 Evaporator is dirty Models GWH09AB D3DNA2D amp GWHI2AB D3DNAOD cont Indicator has 3 kinds of Malfuncti Indicator Display during blink display stat d duri
87. rmal with decrease in capacity Decrease frequency due to overcurrent Status All systems operate normal with decrease in capacity Decrease frequency due to high discharge air Status All systems operate normal with decrease in capacity N Possible Causes Refer to E8 troubleshooting procedures Input voltage too low System pressure is too high Cooling load is too great Outdoor ambient too high Refrigerant undercharge Electronic expansion valve fault 99 Lc Start up Failure Start the unit after waiting 5 minutes Are the compressor wires UVW No connected properly Yes Repair Connection Is unit operating properly Yes Is refrigerant charge correct Charge Unit according to service manual Compressor Wires Does unit startup normally Replace the controller AP1 Yes Is problem corrected Replace Compressor End Troubleshooting 100 HC PFC Power Factor Correction Protection HC PFC Power Factor Correction Protection Status 1 Check for damage to the reactor and PFC During cooling amp dehumidifying indoor unit capacitor of the outdoor unit operates while other functions stop During 2 Refer to troubleshooting procedure below heating operation complete unit stops Start Troubleshooting Check wiring of the reactor L and PFC capacitor Outdoor Unit Are wires connected proper Correct according Is problem Yes with no short circuit
88. roperly connected Cooling operation compressor stops while 3 Faulty sensor check readings with charts indoor fans runs Heating operation complete 4 board unit stops Outdoor discharge temperature sensor is 1 Loose or bad contact of outdoor temperature open Qr short circuited sensor head of sensor should be inserted Status into the copper tubing Cooling operation compressor stops after 2 Sensor wire leads not properly connected minutes while indoor tans TUnS Fiealing 3 Faulty sensor check readings with charts operation complete unit stops after operating 4 Main circuit board defective for 3 minutes 97 Temperature Sensor Troubleshooting Start Temperature Sensor Troubleshooting Is the sensor wire plug loose from Yes the AP2 board Insert the plug correctly No Is problem corrected Is there a short or open circuit in the Yes Wire or sensor Replace sensor or correct wire problem Yes No Is problem corrected Do the temperature sensor readings No compare to the resistance table in Replace the sensor with the Appendix appropriate part number Yes Is problem corrected Replace the controller with the same es part number End Troubleshooting 98 F6 F8 F9 Temperature Sensor Codes See troubleshooting chart preceding page F6 Fault amp Status Decrease frequency due to overload Status All systems operate no
89. s During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the com plete unit will stop operation During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the com plete unit will stop operation During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the com plete unit will stop operation Possible Causes Showing during max cooling or max heat ing test Showing during mid dle cooling or middle heating test Refer to the malfunc tion analysis IPM protection loss of synchronism protec tion and overcurrent protection of phase current for compres sor Refer to the part three charging mal function analysis of capacitor Replace outdoor control panel AP1 65 Models GWHO9AB D3DNA2D amp GWH12AB D3DNA2D cont Indicator has 3 kinds of display status and during blinking ON A C Status Possible Causes 0 5s and OFF 0 5s Malfunction Indicator Display during blink Name ing ON 0 5s and OFF 0 5s During cooling and After the complete drying operation unit is de ener compressor will gized for 20 mins stop while indoor check whether the fan will operate thermal grease on During heating IPM Module of Module high operation the outdoor control temperature and blink 224 plete unit will stop
90. s Setting the auto mode will run the unit in heat or cool automatically depending on Tindoorambient 1 Operating Parameters A If the Tindoorambient gt 79 F the unit will operate in cooling mode The set temperature is 77 B If the Tinaoorambient lt 72 F the unit will operate in heat mode The set temperature is 68 F C When the Tindoorambient lt 73 F and gt 77 E the unit will operate in the previous state If it is energized for the first time it will run in Fan mode D In auto mode the cooling frequency will be the same as the cooling only mode and the heating frequency will be the same as the heating only mode 2 Protection A In cooling operation protection is the same as the cooling only mode B In heating operation protection is the same as the heating only mode C When the indoor ambient temperature changes the operation mode will be automatically selected Once started the compressor will have a 6 minute runtime 20 Protection Functions Common Protection Functions and Fault Displays Coil High Temperature Protection Ttube measured temperature of outdoor coil in cooling mode measured temperature of indoor coil in heating mode 1 Outdoor Coil High Temperature Protection In cooling mode the software will monitor the outdoor coil for an abnor mal high temperature condition A If Ttube lt 126 F the unit will return to its original operation state B If Ttube gt 131 frequency rise is not a
91. s to circuit diagram corrected No Remove the PFC Capacitor and test resistance of the two terminals Is the resistance Replace the Is problem about zero capacitor corrected Disconnect the reactor wires amp measure the resistance between the two terminals of the reactor Is the reactor Is problem damaged or Replace the reactor corrected shorted Replace the 1 control panel End Troubleshooting 101 HO H3 Error Codes Fault amp Status Possible Causes Decrease frequency due to overload Status All systems operate normal with decrease in capacity 1 Refer to E8 troubleshooting procedures Defrosting Status Defrosting will occur in heating mode Normal function Compressor will operate while indoor fan Stops ae Protection for compressor 1 Wiring terminal OVC COMP is loose In During cooling mode compressor will stop indoor fan will run Heating mode all units stop normal state the resistance should be less than 1 ohm 2 Refer to EA troubleshooting procedures 102 H5 Error Code IPM Protection H5 Fault amp Status IPM Protection Status During cooling mode compressor will stop indoor fan will run Heating mode all units stop Start Troubleshooting after unit is powered off for 3 minutes Are the compressor terminal connected properly Yes Check the compressor winding resistance Is the resistance normal Yes
92. sed upon the temperature sensor readings The adjustment process and compressor speed are controlled by the outdoor circuit board E refrigerant leaving the EEV will be in a low pressure temperature saturated state This cold saturated refrigerant will move through the coil absorbing heat This liquid will flash to a vapor and will be superheated to about 10 degrees Since this tubing is cold it must be insulated The superheated vapor will be returned to the outdoor units 4 way valve G The refrigerant will flow to the accumulator not all models will have an accumulator where liquid and vapor are separated H The refrigerant will flow to the compressor and complete another refrigeration cycle The control board will monitor the temperature and pressures and adjust the frequency of the compressor and flow rate of the EEV as needed There are no pressure charts to evaluate temperature or pressures 11 Product Introduction Outdoor Unit 501 S S S S Temperature E SSS LF LX Indoor Unit Sensor Heat N N N Electronic Exchanger 33 33 i xpansion S S S S S _ _ _ _ __ _ valve Suami RR Heat Exchanger x e ea ee ee a 2 T 4 way i al valve j Discharge lt T ilencer ence Discharge Temperature S S nsor Accumulator not ES
93. serted into the copper tube Refer to the mal function analysis overload high tem perature resistant The input supply voltage is too low System pressure is too high and over load Overload or tem perature is too high Refrigerant is insuf ficient Malfunction of electric expansion valve EKV Poor air return in indoor unit or fan speed is too low 63 Models GWHO9AB D3DNA2D amp GWH12AB D3DNA2D cont Malfunction Indicator Display during blinking ON 0 5s and OFF 0 5s Name OFF 3S and blink 11 times Voltage for DC bus bar is too high Voltage of DC bus bar is too low blink 21 times Compressor Min frequen cy in test state Compres sor rated frequency in test state 64 OFF 3S and Indicator has 3 kinds of display status and during blinking ON 0 5s and OFF Operation Cool Heating Yellow Red Green and blink 13 times and blink 12 times A C Status During cooling and drying operation compressor will stop while indoor fan will op erate During heating operation the complete unit will stop operation During cooling and drying operation compressor will stop while indoor fan will op erate During heating operation the complete unit will stop operation Possible Causes 1 Measure the voltage of position L and N on wiring board XT if the voltage is higher than 265VAC turn on the unit after
94. stem is not balanced restart it after 3 minutes End Troubleshooting 80 Miscellaneous Malfunctions Fan capacitor has open circuit or damaged eplace capacito Replace motor Motor winding open Replace motor R ir connection wir r Incorrect wiring or bad connection or n pue schematic Fan capacitor has open circuit or damaged eplace cap Motor winding open Replace motor x I R ir connection wir r Incorrect wiring or bad connection l s j schematic Faulty compressor Replace compressor Open or shorted capacitor Replace capacitor Motor overload protector faulty The fan does not run when set to run Compressor runs outdoor fan will not Outdoor fan runs compressor will not run Check for proper voltage of power Improper voltage module replace module if input is OK and output is incorrect 2 R ir connection wir r Incorrect wiring or bad connection zpa conne schematic Overload protector faulty Replace protector if faulty 81 Miscellaneous Malfunctions cont Incorrect refrigerant charge Charge per instructions Faulty metering device Check refrigerant flow Faulty valve in compressor Replace compressor The compressor is hot tripping overload Faulty protector Replace protector MA sufficient eplace swing motor Indoor swing motor g Poor or wrong connection Repair connections inoperative The controller is damaged Replace co
95. t amp Status Possible Causes Low Pressure Protection 1 Low refrigerant charge Status 2 Improper indoor mode setting Cooling operation compressor stops while 3 Improper fan operation indoor fans runs Heating operation complete 4 Refrigerant valve not fully opened unit stops Low Pressure Protection Yes Verify low pressure with gauge Refer to high pressure protection Charge refrigerant according to the amount Check if the refrigerant is sufficient Yes specified in the nameplate and calculated additional amount Check if operation mode of indoor unit is set No Refer to instruction manual of properly indoor unit Check if gas and liquid valves are open Completely open all valves Y Ye No Check if panel of outdoor unit is firmly closed Close the panel Ye Check air flow of indoor and outdoor units forL_ No Remove the barrier obstructions Ye No Check for indoor and outdoor fan operation Measure the fan motor input S S S S Yes Check operation of swing louver Yes Measure swing motor signal input Check indoor filter and coils for dirt Hefer to care and maintenance Yes System piping is blocked Check inlet and outlet of main pipes connecting each indoor unit and capillary of indoor and outdoor units Replace the parts such as filter etc as needed 91 E4 Error Code High Discharge Temperature Protection of Compressor High Disc
96. t temp is too high 1 Poor indoor unit air return ing 2 Indoor fan motor rotating speed abnormal 3 Evaporator is dirty Please refer to trouble shoot air exhaust protection overload 1 Power supply is stable fluc tuation is too much 2 Power supply is too low overload is too much 71 Models GWHISAB D3DNA2D amp GWH24AB D3DNA2D cont Malfunction Name Indoor and outdoor units com munication malfunction Anti high temp protec tion Indoor unit motor no feedback Jump wire cap mal function protection Indoor am bient sensor open circuit short circuit 72 35 and blink 6 times OFF 3S and blink 8 times OFF 3S and blink 11 times OFF 3S and blink 15 times Indicator Display during blink ne ON 0 5s and OFF 0 5s R Cooli Heati OFF 3S and blink once D41 D6 Indoor Unit Displaying Method Outdoor Unit Display LED Indicator has 3 kinds of display status and during blinking Dare 0 5s and OFF 0 5s D43 D30 A C Status Cooling com pressor will stop indoor fan motor works Heating all will stop Cooling com pressor will stop indoor fan motor works Heating all will stop Whole unit will stop to run Whole unit will stop to run Cooling dehumidify ing indoor fan motor is running other overloads will stop Heating whole unit will stop to run Malfunctions Please refer to troubleshoot in
97. t send command to indoor unit Start Troubleshooting Is there a jumper cap on the No controller Yes Yes jumper cap la Install a matching No jumper cap inserted on board Jumper cap not fully seated Jumper cap damaged Bad control board No Is system Yes operating properly Is the jumper cap inserted correctly Yes cap Re insert the jumper No Is system Yes operating properly Replace the jumper cap Is system Yes operating properly No Replace the main control board End Troubleshooting 88 EE EU FH E2 Error Codes Fault amp Status Possible Causes EEProm Malfunction Status During cooling amp dehumidifying indoor unit 1 Faulty outdoor control board replace AP 1 operates while other functions stop During heating operation complete unit stops Decrease in Frequency due to over heating 1 After the unit is off for 20 minutes check for of Module sufficient thermal grease on IPM module of Status the outdoor control board and that is seated All units operate with decrease in capacity tightly 2 Faulty control board replace Decrease frequency due to anti freezing Status All units operate with decrease in capacity Poor air return in indoor unit 2 Fan speed too slow Antifreeze Protection Status 1 Poor air return in indoor unit Cooling operation compressor stops while 2 Fan speed abnormal indoor fans runs Heating
98. the sup ply voltage is increased to the normal rang 2 If the AC input is normal measure the voltage of electrolytic capacitor C on control panel AP1 if its nor mal theres malfunc tion for the circuit please replace the control panel AP1 1 Measure the voltage of position L and N on wiring board XT if the voltage is higher than 265VAC turn on the unit after the sup ply voltage is increased to the normal rang 2 If the AC input is normal measure the voltage of electrolytic capacitor C on control panel AP1 if its nor mal theres malfunc tion for the circuit please replace the control panel AP1 Showing during min cooling or min heating test Showing during nomi nal cooling or nominal heating test Malfunction Name Compressor maximum frequency in test state Compressor intermediate frequency in test state Overcurrent protection of phase current for compres sor Charging malfunction of capacitor Malfunction of module temperature sensor circuit Models GWHO9AB D3DNA2D amp GWH12AB D3DNA2D cont Indicator Display during blink ing ON 0 5s and OFF 0 5s during blinking ON 0 25s and OFF 0 25s during blinking ON 0 25s and OFF 0 25s OFF 3S and blink 15 times blinking ON 0 25s and OFF 0 25s during blinking ON 0 25s and OFF and blink 17 times and blink 18 times play status and during blink ing ON 0 5s and OFF 0 5
99. uirement The G10 technology will control compressor speed based on indoor load and compressor amperage When the indoor temperature is satisfied the compressor will stop then 60 seconds later the outdoor fan will stop When the cooling mode transfers to heating mode the 4 way valve will be energized after a two minute compressor delay Evaporator Freeze Protection The software will monitor the indoor evaporator coil form freezing The following will occur 6 minutes after the compressor has been operating in the cooling or dry mode If the evaporator temperature drops below 36 F the compressor will operate at a reduced frequency If the evaporator is below 30 F for 3 minutes the compressor will stop 30 seconds later the outdoor fan will stop In cooling mode the indoor fan and swing motor will remain on If the evaporator temperature is gt 50 F and the compressor is off for at least 3 minutes the compressor will resume its normal operation state Overcurrent Protection The software will monitor the compressor current to maintain it in a safety and reliable operating range If the total current is greater than the rating the compressor will stop the outdoor fan will continue to run for 60 seconds then stop 2 Dry Mode Drying Process This feature will not take the place of a dehumidifier it is intended to dry the filter and slightly cool the air If the indoor ambient temperature is greater than the preset temperature the un
100. y or death Caution Incorrect handling may result in minor injury or damage to product or property Warning All electrical work must be performed by a qualified licensed electrician according to local and national codes as well mas the instructions provided in the manual e Before installing modifying or servicing the system the main electrical disconnect must be off There may be more than one disconnect switch Lock out and tag switch with a suitable warning label Never supply power to the unit unless all wir ing and tubing are completed reconnected and checked This system adopts highly dangerous electrical voltage Incorrect connections or inadequate grounding can cause personal injury or death Refer to your local and national codes for proper grounding Have the unit properly grounded with all connec tions tight Loose connections can cause overheat ing and a possible fire hazard Never install the unit in a place where a combustible gas might leak or it may lead to fire or explosion Make a proper provision against noise when the unit is installed at a telecommunication center or hospital Provide a GFIC circuit when the local or national electric code requires it Never wash the unit with water Handle unit transportation with care Use two people when the weight exceeds the capacity for one person Never touch the heat exchanger fins with bare hands sharp edges could cause personal injury Never touch

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Service Manual – Gree Comfort