ash-24ain (pt)
Contents
1. LA Unit mm 600mm above Unit mm 24 1 D 2 O D E E c c x gt Electrical Diagram ASH 18AIN PT WARNING 34 UBE RO WHEN THE UNIT IS RUNNING OR STOPED IN 2 BN WH SENSOR TEM SENSOR gj MINUTES OR THE VOLTAGE LESS THAN 30V ae BETWEEN P OF IPM PLEASE DONT TOUCH ANY TERMINAL AVOIDING ELECTRICAL SHOCK HAZARD ACL ACNT ACN3 ACLS RT x YEGN LAC ACLI BU jt m X4 ACN AP2 N 2 BK lt X18 COM A BN 3 BN L 22 JBN FILTER BU N UBE ROOM X127 X117 5 3 AC N 22 BU 1 PEN E2. 10 Pipe Protection Devices Gendenser amp ssy OOOO oa fecon 34 Rearom A E T T 15 isolation Sheet OOOO oos _ 17 Lauw gas _ 1 15 is 20 CapitarySub assy 23003 o O 21 9189888 _ 22 1L Power Module 32210055 PFC Module 30111018 Module Support Base 24213029 ScrewM4X20 70110274 Module Support Cap 24213010 Main PCB WB8235E 30038216 ScrewM4X20 70110274 Module Support Base 24213029 Module Support Cap 24213030 Radiator 49013008 Electric Box 4 20112036 Wiring Terminal 42010255 Wire Clamp 71010102 Isolation Washer 70410523 Wire Clamp 71010003 Electric Box Assy 01403532 Fuse Support 24213032 Fuse Assy 46010056 Filter 30884 1BC2 R Q 43130012 Capacitor CBB61 3uF 450V 33010027 Electric Box Cover 01413102 Valve 1 2 071302392 Valve 1 4 07130239 Valve Support 01715006 Rubber footof compressor NONE 48 Thermistor Compressor C 6RVN93HOV 00103041 Electric Heater pressor 7651300401 Description ao a a 3 a ay ay 2 a a ow a a a a a a a a a a a a a pp pa A ao A A A a a The above data is subject to change
3. Water leakage Wrap of refrigerant pipe joint is not close an __ Re wrap and make it tight en Abnormal sound and shake Drainage pipe blocked or broken E Change drainage pipe Fan of indoor unit contacts other parts Adjust fan location Foreign object in indoor unit Take out the foreign object Compressor shakes too much Adjust support washer of compressor and tighten loosen screws Touch of pipeline of outdoor unit Separate the touching pipeline Note Touch of inner plates 1 Tighten connect screw 2 Stick absorbing clay between plates Louver of outdoor unit touched outer case Adjust location of louver Abnormal sound inside compressor Change compressor Abnormal solenoid sound from 4 way valve when heating Circuit short inside solenoid of the valve and change the solenoid valve 1 When maintaining before detecting the voltage between the modular PN is less than 50V please never touch any of the terminals in order to avoid electric shock 2 When replacing the batteries commutating bridge both of them should be coated with the coolant Analysis or processing of some of the malfunction display 1 Compressor discharge protection Possible reasons shortage of refrigerant blockage of air filter poor ventilation or air flow short pass for
4. fi L v NORDIC SERIES ASH 18AIN PT ASH 24AIN PT sin AIR CONDITIONING Specifications and Technical Parameters Model ASH 18AIN PT ASH 24AIN PT COOLING HEATING COOLING HEATING Rated Voltage 220 240V 220 240V Rated Frequency 30 100 75 30 100 72 25 100 82 25 100 74 abseil C 500 5800 5300 2300 6400 5850 2000 6800 6500 Standard Total Capacity Btu h Low High 8500 19800 2300 6400 5850 6800 23200 Standard 18100 22200 52072450 2020 85077507650 EER C O P WW 3 22 3 61 Energy Class A A A A Model of Indoor Unit ASH 18AIN PT ASH 24AIN PT Fan Motor Speed r min H M L Output of Fan Motor w 5 Fan Motor Capacitor uF 2 m 7 1600 8200 6500 5460 28000 22200 470 3250 1800 3250 14 2 EN 1400 1200 1100 1400 1200 1100 45 Fan Type Piece Cross flow fan 1 Cross flow fan 1 Aluminum fin copper tube Aluminum fin copper tube 4 e w Diameter Length m 96 X797 96 X797 215 Coil length 1 x height x coil width L Swing Motor Model MP28AA MP28AA Sound Pressure Level dB 48 43 40 48 43 40 A H M L ono Sound Power Level dB A 58 53 50 58 53 50 H M L Dimension W H D mm 1020X319X234 1020X319X234 Dimension of Package 1078 325 390 1078 325 390 uw mm Net Weight Gross Weight kg 787X400X25 4 787 4
5. parameters Sent to NEC INKS rotection Preserved 10blinks drive has some problem unit stop 1blinks Cassette unit stop Tor water flow 11blinks Fault of IPM temperature sensor fl 2blinks stop for IPM overheat protection 12blinks D14 Definition D15 Definition Definition blink Air exhaust protection drop frequency 1blink Air exhaust protection limit frequency Receiving or sending computer data 2blinks Overcurrent protection drop frequency 2blinks Overcurrent protection limit frequency Computer data received or sent 3blinks Refrigerant overcurrent drop frequency 3blinks Refrigerant overload limit frequency Ablinks Heating overcurrent drop frequency Ablinks Heating overload limit frequency 5blinks Anti freezing drop frequency 5blinks Current 9 4A Frequency stays 2mins 6blinks Stop for reduction of frequency to lowest 6blinks Current 12A Frequency stays 2mins 7blinks Stop for PFC protection Tblinks limit frequency or drop frequency 8blinks Stop for compressor overload 8blinks Compressor current limit frequency or drop frequncy Oblinks IPM module overheat limit frequency or drop frequency Definition NEC drive D17 information D18 Definition When computer m 1blink DC input voltage too low matin pon Bright Reciving or sending indoor unit data is not short 2blinks DC voltage too high Dark Reciving or sending indoor unit data
6. to the indicator display on outdoor unit Breaker tripped or fuse burnt out Air conditioner does not response after powered on The buzzer does not sound after the plug 15 connected and the unit does not response afler the remote controller is used to turn it on Remote controller does not receive signal When powered on the buzzer will send out a sound unless it is broken When the breaker is set ON it will trip at once When the unit is turned on the breaker will trip in a few minutes No power supply The power plug is not or poorly connected Controller fuse is burnt out Loose or poor contact of transformer connection or transformer malfunction The controller is broken Measure the insulating resistance for grounding to confirm whether there is electrical leakage or short circuit in the unit ulation malfunction of line or componen in the air conditioner Insulation breakdow occurs after radiation which causes shor circuit or electricity leakage Measure insulating resistance or use one by on elimination method Check power supply circuit Check and plug well plug make loosen contact firm Change control fuse Secure the wire connection measure the output voltage of the transformer and replace it if the value is wrong Replace the controller Batteries of remote controller are low Change battery Malfunction of remote controller Loose or poor connection of receiving head
7. HEAT LINE YOLOWINOD gt OUTTUBE OUTDOOR EXHAUST TRANSFORMER MICRO SWITCH AC L1 FAN H Y Y Y We Ww 5 JRT4 JRT3 QUTTUBE _OUTROOM _ EXHAUST TEM SENSOR TEM SENSOR TEM SENSOR FAN MOTOR BN BROWN WH WHITE OG ORANGE YEGN YELLOW GREEN BUBLUE YEYELLOW VT VIOLET UTDOOR UNIT BKBLACK RDRED Manual of functions of remote controller and operation method Manual of functions of remote controller Applicable to ASH 18AIN PT Controller Function of Indoor Unit 1Temperature parameters Indoor setting temperature Tpreset Indoor ambient temperature Tamb 2 System basic function 2 1 Cooling mode In this mode the indoor fan will run at preset fan speed When the compressor stops for outdoor unit malfunction protection the indoor fan will still run at preset fan speed gt Temp can be set in the range of
8. Loosen the 3 slipknots manually and then pull upwards the electric box cover 6 Dissasemble water tray sub assy Unscrew the screws fixing the water tray and then loosen the slipknot in the other end Pull out the terminal of stepping motor and then pull upwards the water tray to take it out Water tray Slipknot Terminal 7 Disassemble Electric box unplug the plugging connector of the indoor motor at the electric box use screwdriver to unscrew the screw fixing the electric box and remove the electric box 8 Disassemble Evaporator Use a screwdriver to loosen the screw 1pc of left side 2pcs of right side Take out the evaporator with your hands so that the side plate clamp of evaporator falls out from the groove Remove the evaporator with care Take care to protect the connecting pipe 9 Disassemble Motor Use a screwdriver to loosen the 3 screws fixing the motor clamp Remove the motor clamp Unscrew the tighten nut which fix cross flow fan then Screws can take out the motor from the cross flow fan Motor right clamp 10 Disassemble cross flow fan Take out motor then remove the cross flow fan from the left bearing holder Refer to Fig 7 27 Cross flow fan Disassembly Procedures for Outdoor Unit Operating Procedures Photos of outdoor unit 1 Disassemble Top Cover Screw off the screws which fix the top cover then lift it up can take off the top cover 2 Disassemble th
9. Outdoor temperature is too high when cooling insufficient outdoor air circulation refrigerant flow malfunction please refer to the malfunction analysis in the previous section for handling method IPM module protection Processing method Once the module malfunction happens if it persists for a long time and can not be self canceled cut off the power and turn off the unit and then re energize the unit again after about 10 min After repeating the procedure for sever times if the malfunction still exists replace the module refer to the next page PTC protection Possible reasons ambient temp is too high or PFC module is too heat the power orcurrent of complete unit is too high or PFC voltage is too low connecting wire of PFC control plate is in poor contact Processing method Once protection happens first check connecting wire of PFC control plate if the unit is still abnormal with continuous protection replace PFC controller Module protection Handling method Check if the voltage between power module P and N is too low and if the current is too high In normal condition voltage between P and N should be about 320V ym Normal Check power supply circuit of outdoor unit if PIC resistance rectifying bridge reactor capacitance etc is ok Y Check if radiating paste is spread Reinstall power module and Temperature of power module is too high evenly or radiating sticker
10. Receiving head is broken First press the AUTO button of the manual switch If there is no response check according to the above method if it is normal after the button is pressed check if the installation location and wire connection of the receiving head are correct If correct replace the receiving head or the remote controller Improper setting of temperature Adjust the set temperature Whether cooling heating load is Check the estimated load of cooling heating Vacuumize after leakage detection and leakage repair Charge refrigerant according to specification Replace the compressor Leakage or shortage of refrigerant Leakage occurs between high and low pressure inside compressor Malfunction of refrigerant flow Malfunction of four way valve Partial blockage of capillary Blockage of cooling system Replace the four way valve Replace the capillary Use the method of observing condensation on the evaporator and pressure value of high pressure manometer to see whether the system is blocked and carry out corresponding handling on the system 45 3 ep 2 da Bt S cB 98 lt 2 Ensure that both thick pipe and thin pipe are insulated Poor thermal insulation of connecting well The exposed part of the connector and copper pipe nine of indoor and outdoor unit must be insulated as well Heat exchanger of outdoor unit Clean the
11. 16 30 2 2 Dehumidifying mode Indoor fan will run at low speed invariably Swing will operate according to setting status gt Temp can be set in the range of 16 30 2 3 Fan mode Indoor fan and swing will operate according to setting status gt Temp can be set in the range of 16 30 2 4 mode In heating mode if compressor is running indoor fan will delay to run to avoid cold air blowing When compressor stops blowing When compressor stops blowing residual heating will enter Blowing residual heat In heating mode the unit is stopped by remote controller indoor fan will continue to run for 60s Fan speed can not be switched during blowing residual heat gt Temp can be set in the range of 16 30 2 5 Auto mode In this mode the system selects COOL HEAT and FAN mode automatically according to the change of ambient temperature Protection function is the same as that in cooling and heating mode 3 Other control 3 1ON OFF Each time the On Off 1 button of the remote controller is pressed the On Off state will switch once 3 2 Modes selection Press the MODE button on the remote controller to select and display the following modes AUTO COOL DRY FAN HEAT AUTO 3 S TEMP Setting Button Each time V button is pressed the set temperature will be increased or decreased by 1 C Adjusting range is 16 30 C In AUTO mode this button does not function 3 4 Manual Button ON OFF If
12. 7 Demagnetization current protection The peak value for demagnetization current is 41A when deteced this value is more than regulated value whole unit will drop frequency after drop frequency if detected the value still more than regulated value the compressor will stop to run After drop frequency if the value is less than the regulated value it will resume to the target frequency point And resume to the target frequency point procedure detect demagnetization current peak value is more than regulated value then execute the drop frequency order 2 8 Compressor phase current protection During compressor running detected the compressor s phase current and according to the following logic for control 1 If detected DC generatrix current 13A compressor drop frequency running indicator displays DC generatrix overcurrent protection drop frequency then detected DC generatrix current 12A and target frequency more than the running frequency the compressor s frequency rise up to target frequency running if target frequency is less than frequency or there is any other frequency happens the slow rise limit will be canceled When whole unit running drop frequency arrives the lowest frequency and DC generatrix 13A when arrive at the temperature point unti will stop and displays the generatrix over current protection malfunction compressor has stopped 3mins will automatically resume to running status 2 If compressor frequency rise and
13. UP DOWN xit SWING2 Y V L j Noy 2 EM m AN xof cw B ew EHEATERle Ls BASE i HEATER xal N T X2 HEAT X8 X2 HEAT2 X11 X254V OVERLOAD CO YEGN POWER TUBE ROOM EXHAUST us Preu ca FAN H FAN L Y X28 13 ELECTRICAL BOX y RANSFORMER MICRO SWITCH A c lho Rrs RT4 OUTTUBE OUTROOM EXHAUST A TEM SENSOR TEMSENSOR TEM SENSOR BN BROWN WH WHITE 1 BUBLUE BKBLACK RD RED YEGN YELLOW GREEN OUTDOOR UN FAN MOTOR WHEN THE UNIT IS RUNNING OR STOPED IN 2 MINUTES M1 OR THE VOLTAGE LESS THAN 30V BETWEEN P AND N OF IPM PLEASE DON T TOUCH ANY TERMINAL AVOIDING RD HT ELECTRICAL SHOCK HAZARD 1 2 VT 2 BN AC L1 EARTH AC L1 AC N1 AC N3 AC L3 FILTER BN 1 L lt COM BN 2 gt lt lt AP1 gt AC L N BU y BU UP DOWN Swic2 2078 x112 av E E CN2 T 1 Tom ELECTRICAL BOX 12 HEAT STRAP 2 AC L1 4V ee PTC FUT Al
14. deteced any phase current 12A that the compressor frequency rise up to the target frequency running 2 9 Module over heat protection function If detected the module surface temp 110 C the whole unit will accord to IPM module protection process 3 Outdoor indicators display status The meaning of lights blinks for mainbaord D101 Green Definition D102 Red Definition D104 Yelllow Definition Air exhaust protection drop frequency Unit stop for Over current protection 2Blinks compressor high 2Blinks 2Blinks drop frequency pressure protection 1Blink Compressor runs 1Blink 1Blink 3Blinks Refrigerant over load drop 3Blinks Unit stop for air exhaust protectipn 3Blinks frequency Unit stop for communication Heating anti high temp drop 4Blinks malfucntion including indoor ABlinks 4Blinks frequency unit and drive board 5Blinks Unit stop for module protection 5Blinks 5Blinks Preserved for one to two use Communication malfunction signal Unit stop for i Defrostin 6Blinks over current protection 6Blinks sent from indoor 6Blinks 9 7Blinks Unit stop for refrigerant overload 7Blinks 7Blinks Anti freezing protection drop frequency Unit stop for heating DC generatrix over current protection 8Blinks anti high temp 8Blinks 8Blinks drop frequency Unit stop for refrigerant 9Blinks anti freezing Unit stop for 10Blinks Temp sensor malfunction Unit stop for compressor 11
15. dust accumulated on the is blocked surface of the heat exchanger Air filters are blocked Clean the filter Fan speed is set too slow Set the fan speed to high or medium Air circulation D D D 2 is insufficient DG th Fan speed turns low ad capacitor Damage of Replace the motor motor Improper installation location for outdoor unit Outdoor unit should be installed in a place with well ventilation Flashing or awning can be installed appropriately If the 1 tdoor temperature is too high P max cooling capacity cannot be satis j ed replacement of the air conditioner is recommended Indoor sealability is inadequate too many Maintain a certain degree of indoor sealability Try not to people go in and out frequently there is use appliance with high amount of heat heating unit in the room Abnormal power supply of outdoor unit Check the circuit according to circuit diagram Damage of outdoor main control board When unit is cooling AP2 Replace the main control board 2 or heating both compressor and outdoor fan don t run _ Breakage of outdoor power module AP4 gt Replace the power module AP4 Improper setting of temperature gt Adjust the set temperature Breakage of outdoor fan motor Replace the fan motor When unit is cooling or heating the compress
16. is stuck re spread radiating paste or which causes overheating protection well if screws of power module stick radiating sticker on the is tightened radiator of power module Protection is still displayed koor radiation heat exchanger is dirt Confirm the setting status of outdoor unit cooling Y Normal Confirm if outdoor fan motor is running unplug the three connecting wires between U V W of compressor Outdoor fan runs and power module Turn on the unit to see if outdoor fan runs normally about 1 minute Outdoor fan stops vey Confirm if there is voltage output and balance of voltage between any two phases of U V and W the voltage of outdoor Whether module type an connector is correct Replace the power module rae 1 No voltage Normal voltage Replace the module Measure the three phase with correct type resistance of compressor Replace the mainboard Replace the fan of outdoor unit motor Normal Whether cylinder of Replace the compressor is stuck compressor If the unit runs normally after connected with the new compressor for trial run the cylinder of original compressor is stuck
17. 00 25 4 lt a E pel PT SANYO CompressorModel C 6RVNOSHOV Double Rotary ia ojo 3 3 njo lt lt Oo gt pe c gt 1670 1500 5133 00 0 81919 E gt 5 Overload Proiecor INTHL S979 INTHL3979 Throtting Method Capilla Capillaryhrotling Er 2 5 er o a A A A Transducer staring 18 lt lt 46 Aluminum fin copper tube 214 Coil length x height x coil width 838x660x25 4 731X813X44 L Fan Motor Speed rpm 780 600 780 620 Output of Fan Motor W 0 Outdoor Motor RLA 026 FanMotorOapacor uF itor m a o z amp E EX a o FantypePiecs fan Fan Diameter mm Defrosting Method defrost p ra Moisture Protection Permissible Excessive Operating Pressure for the Discharge Side MPa Permissible Excessive Operating 58 55 68 65 T 5 5 0 Fa Fa Fa n n Flow Volume of Outdoor Unt 2700 n c o a 3 lt 5 o Motor Motor Diameter m Pressure for the Suction Side
18. 3 Gas Valve Disassemble Compressor Unscrew the six nuts with washers at the feet of the Compressor two compressors caution only after discharging all freon Unsolder the suction and the discharge pipes of the compressor carefully remove the pipes and take out the compressor refer to Figure 7 24 Fig 7 24 Exploded View and Components and Parts List Exploded View of Indoor Unit N 36 13 438 Components and Parts List of Indoor Unit Part Code ASH 18AIN PT Description 11122048 Drainage Pipe 24242001 35 PowrGod mme SSCS CT MCI EN above data is subject to change without prior notice Exploded View of Indoor Unit 8 4 Components and Parts List of Indoor Unit ASH 24AIN PT FrontCase 2000669 Ce 2048069 79 Guidelouver up 10512088 35 Powerco 1 The above data is subject to change without prior notice Exploded View of Outdoor Unit 14 15 16 17 18 19 20 21 22 24 25 26 27 Components and Parts List of Outdoor Unit Part Code ASH 18AIN PT Front Grill 01473008 gt 3 LenHandie 828880 oroo 888086600 s _
19. 3blinks AC current protection When computer Bright Indoor unit data received or sent monitoring port is short Dark Communication between mainboard and drive Ablinks IPM abnormal circuited board is abnormal 5blinks in built PFC protection 6blinks startup failure 7blinks Phase failure or modulation failure irstly PFC protection then module 8blinks rotection Disassembly and Assembly Procedures Disassembly Process of Indoor Unit Operating Procedures Photos 1 Disassemble the Front panel Open the front panel Firstly to screw off the screws that fixed at the guard plate on the receiving window both sides disassemble the guard plate then to remove the wiring terminal then along the groove that fix the front panel to take out the front panel Front panel Wire terminal 2 Disassembling the filter and wire pressed clamp Disassemble the filter screw off the screw that fix the wire pressed clamp can disassemble it 3 Disassemble air guide louver Bend the air guide louver by hands and then loose the slipknot on the guide louver to disassemble the guide louver Air guide louver Operation procedures pictures 4 Disassemble Front Case Open the three screw covers and unscrew five screws on front case Pull open the clasp at the front and rear sides can remove the front panel Screw cover Screws 5 Disassemble the electric box cover
20. 5Blinks PFC protection PFC 6Blinks Continuously 5times startup failure 7Blinks Startup failure 8Blinks Lack voltage 9Blinks Over voltage 10Blinks IPM overheat protection O Controller Function Manual Remote Controller Function Manual Applicable to ASH 24AIN PT Controller Function of Indoor Unit 1 Temperature Parameters Indoor preset temperature Tpreset Indoor ambient temperature Tamb 2 Basic Functions 2 1 Cooling Mode In this mode the indoor fan will run at preset fan speed When the compressor stops for outdoor unit malfunction protection the indoor fan will still run at preset fan speed gt Under this mode temperature setting range will be 16 30 2 2 Dehumidifying Mode Indoor fan will run at low speed invariably Swing will operate according to setting status Under this mode temperature setting range will be 16 30 C 2 3 Fan mode Under this mode indoor fan motor swing motor will run at setting status gt Under this mode temperature setting range will be 16 30 2 4 Heating Mode In heating mode if compressor is running indoor fan will delay to run to avoid cold air blowing When compressor stops blowing residual heating will enter Blowing residual heat In heating mode the unitis stopped by remote controller indoor fan will continue to run for 60s Fan speed can not be switched during blowing residual heat Un
21. Blinks overload protection Unit stop for compressor 12Blinks low pressure protection Unit stop for DC generatrix over current protection 13Blinks 14Blinks EEPROM fault 15Blinks DC power supply short circuit D105 Red Definition D106 Green Definition D108 Green Definition 1Blink Air exhaust protection 1Blink Air exhaust protection limit frequency 1Blink Received verified correct indoor data 2Blinks imit frequency Overcurrent protection 2Blinks Outdoor tube sensor malfunction 3Blinks imit frequency Refrigerant overload 3Blinks Outdoor air exhaust sensor malfunction 4Blinks imit fr temperature limit frequency 4Blinks Preserved 5Blinks Preserved for one to two use 5Blinks Malfunction with drive board cannot receive correct data from drive board 10s 6Blinks Oil return 6Blinks 7Blinks Anti freezing drop 7Blinks frequency Meaning of lights blinks for drive board LED1 Red Drive Definition LED2 Green Drive Definition Dark Normal reset unit stop Bright Communication malfunction no data receiving by10s 1Blink Compressor normally Blink Communication normal 2Blinks FHRS Unit stop for abnormal 3Blinks IPM protection IPM 4Blinks Demagnetization protection
22. MPa A H M L H MIL ion W H D mm 848 685 378 950 840 420 9 OD oco lt lt gt 5 5 9 Din mc lt SE w 2 UJ g 3 En 9 25 ES 9 i i L W H mm 994X428X750 1100X450X905 i kg 52 57 68 73 2 o LOSS o o R410A 1 6 Outer 6 1 4 9 52 3 8 12 1 2 16 5 8 8 30 9 4 A The above data is subject to change without prior notice Component Name Air inlet Indoor unit 7 2 Air Outlet Set Temp Heat This indicator Wireless remote control is black for single Cooling cooling unit Air inlet lw Wi Ww RUN at ah Air Outlet ts Q KCE Front Panel Guide louver Receiving window LED Board Wall Pipe Wrapping Tape Drainage hose Connection pipe and connection wire Overall and Installing Dimension Overall and Installing Dimension of Indoor Unit 1020 Left Tube exit hole Top View Right Tube exit hole Unit mm Overall and Installing Dimension of Indoor Unit 18K
23. ad protection will be cleared 3 4 Current Protection Function 1 Overload protection If total current is detected over the stated value the unit will be stopped as the indoor room temperature meet the preset value after the compressor has stopped for 3 minutes it will resume its original operating status automatically If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 2 Current dropped frequency or limited frequency control The controller will drop the compressor frequency or prohibit the compressor frequency rising according to the change of total current 3 5 Communication Malfunction There is communication malfunction if it can not receiving correct signal for 3 minutes continuously in which case the outdoor unit will stop 3 6 Module Protection When module is in protection the compressor will be stopped as the indoor room temperature meet the preset value after the compressor has stopped for 3 minutes it will resume its original operating status automatically If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 3 7 Overheat Protection of Module If itis detected the IPM temperature is too high th
24. condenser the system has noncondensing gas such as air water etc blockage of capillary assy including filter leakage inside four way valve causes incorrect operation malfunction of compressor malfunction of protection relay malfunction of discharge sensor outdoor temperature too high Processing method refer to the malfunction analysis in the above section Low voltage overcurrent protection Possible reason Sudden drop of supply voltage Communication malfunction Processing method Check if communication signal cable is connected reliably Sensor open or short circuit Processing method Check whether sensor is normal connected with the corresponding position on the controller and if damage of lead wire is found Compressor overload protection Possible reasons insufficient or too much refrigerant blockage of capillary and increase of suction temp improper running of compressor burning in or stuck of bearing damage of discharge valve malfunction of protector Processing method adjust refrigerant amount replace the capillary replace the compressor use universal meter to check if the contactor of compressor is fine when it is not overheated if not replace the protector System malfunction i e overload protection When tube temperature Check the temperature of outdoor heat exchanger when cooling and check the temperature of indoor heat exchanger when heating is too high protection will be activated Possible reasons
25. der this mode temperature setting range will be 16 30 C 2 5 Auto Mode In this mode the system selects COOL HEAT and FAN mode automatically according to the change of ambient temperature Protection function is the same as that in cooling and heating mode 3 Other Control 3 1 ON OFF Each time the On Off D button of the remote controller is pressed the On Off state will switch once 3 2 MODE Selection Press the MODE button on the remote controller to select and display the following modes AUTO COOL DRY FAN HEAT AUTO 3 3 TEMP Setting Button Each time V button is pressed the set temperature will be increased or decreased by 1 C Adjusting range is 16 30 C In AUTO mode this button does not function 3 4 Manuai Button ON OFF If press AUTO button under off status of the unit the unit will run under auto mode with swing If press AUTO button under on status of the unit the unit will be stopped If remote controller command is given the mian unit will run under the command __ T Wh IB Manual switch 3 5 TIMER ON OFF 3 5 1 TIMER ON The system will continue to run if TIMER ON is set when the system is under ON status If TIMER OFF is set when the system is under OFF status the system will start to run under preset mode upon the time for auto start 3 5 2 TIMER OFF If TIMER OFF is set when the system is under OFF status the system will maintain its standby status upon the time for auto stop I
26. e compressor will run in limited or dropped frequency If the IPM temperature goes on rising over the stated value the compressor will stop When the IPM temperature resumes normal and the compressor has stopped for 3 min the complete unit will resume running If 3 successive times of IPM protection in an hourhappens the compressor won t resume running except pressing ON OFFbutton 3 8 OverloadProtection for compressor If compressor oveload is detected the indoor unit will stop as the indoor room temperature meet the preset value If the compressor has stopped for 3 min it should be reset to start 3 9 9 PFC Protection If start the unit in cooling heating and dehumidifying mode the compressor will operate in the frequency of 30Hz and then PFC occurs after 30s At any time of stopping compressor PFC will stop with the compressor at the same time Once PFC starts protection signal will be detected soon During PFC protection PFC stops with the compressor at the same time PFC will resume operation automatically after 3min when malfunction happens to it 6 3 3 10 Malfunction Detection of Temp Sensor and IPM Overheat Detection Sensor 1 In standby condition malfunction of outdoor tube temp ambient temp and IPM overheat detection sensor can not be detected 2 Malfunction of exhaust temp sensor and IPM overheat detection sensor can be detected after the compressor starts and has run for 3 min 3 Within 10 min when the compressor sta
27. e handle Screw off one screw which fix the handle then adown to push the handle then can take off the handle 3 Disassemble the rear side plate sub assy Screw off the screws which fixed the rear grill and rear side plate disassemble the rear grill then can take off the rear side plate sub assy Handle Screw Rear side plate Rear grill Operating Procedures Photos of outdoor unit 4 Disassemble the front case Screw off the screw which fix the front case then pull it upwards can take off the front Front case case Screws 5 Disassemble cabinet Screw off the screws which fix the cabinet then can take off the cabinet Cabinet 6 Disassemble the electric box sub assy Screw off 2pcs screw which fix the electric box cover then can take off the electric box cover Use the screw driver to screw off 2pcs on the electric box pull out the wire terminal j of the electric box then lift it up can take off the electric box Operating Procedures Photos 7 Disassemble Valves Unscrew the two screws fixing the gas valve unsolder Screws the soldering point between the gas valve and the return air duct and remove the gas valve note when unsoldering the soldering point use wet cloth to completely wrap the gas valve to prevent valve body from being harmed by high temperature Unscrew the two screws fixing the liquid valve unsolder the soldering point connect
28. et Tin amb 2 compressor will stop and outdoor fan will stop running in 60S gt In this mode switch valve is de energized and the temp can be set in the range of 16 30 C 2 1 2 Antifreeze Protection In cooling or dehumidify mode if it is detected that the system is under antifreeze protection the compressor will stop or run with frequency decline and outdoor fan will bestopped in 60S When antifreeze protection is releasedthe unit will resume its original operating status 2 1 3 Control Logic of Outdoor Fan If Tout amb 26 outdoor fan will run at high speed If Tout amb lt 24 C outdoor fan will run at low speed In running if 24 lt lt 26 outdoor fan will remain original After turning on the unit the outdoor fan will be forced to run for 3 min and then run at logical speed 3 2 2 Dehumidifying Mode Working conditions and Process of dehumidifying the same as that in cooling mode State of 4 way valve shut off Temp setting range 16 30 Protection function the same as that in cooling mode 3 2 3 Fan Mode Compressor outdoor fan and 4 way valve shut off Temp setting range 16 30 3 2 4 Heating Mode 3 2 4 1 Working Conditions and Process of Heating f the compressor is in stopped state Tamb 3 lt 0 5 the unit will start heating in which case compressor outdoor fan and 4 way valve will run and the microcomputer
29. fthe TIMER OFF is set when the system is under ON status the system will be stopped upon the tome for auto stop 3 5 3 Set TIMER ON OFF Simultaneously If TIMER ON and TIMER OFF is set simultaneously when the system is under run status the system will maintain its current operating status and be stopped upon the coming of preset time If TIMER ON and TIMER OFF is set simultaneously when the system is under stop status the system will maintain its stop status It will be started until the time for auto start Atthe time for auto start every day the system will run under preset mode At the time for auto stop the system will be stopped Noise silencing is provided under heating mode If the unit is restarted in less than 3 minutes after it is stopped 3 minute lag protection is provided for the compressor 3 5 4 Change of Timer When the system is under TIMER ON OFF status switch on or off the unit by pressing ON OFF key by remote controller Timer can be reset The system will run under the last status setting 3 6 Sleep Function Setting SLEEP function under COOL or DEHUMIDIFY mode the preset temperature will automatically rise by 1 C after 1 hour and rise by another 1 C after 2 hours Preset temperature will rise by 2 C in total within 2 hours After that the unit will run at this preset temperature the indoor fan will run at preset speed Setting SLEEP function under HEAT mode the preset temperature will automatically decrease b
30. ing the liquid valve and the fork type pipe and remove the liquid valve Liquid Valve Gas Valve 8 Disassemble Axial Flow Fan Use a spanner to loosen the holding nut to remove the nut spring washer and flat washer and thenremove the axial flow fan with force Axial Flow Fan 9 Disassemble Outdoor Motor Screw off the four tapping screws fixing the motor pull out the motor lead out cable plug and remove the motor Screw off the two tapping screws fixing the motor support and pull the motor support upwards to remove it Operating Procedures Photos 10 Disassemble 4 Way Valve Only for cooling and heating unit Screw off the holding nut of the 4 way valve coil and remove the coil Use wet cotton cloth to wrap the 4 way valve unsold the four soldering points connecting the 4 way valve and remove the 4 way valve Be quick during the unsoldering process pay attention to keep the wrapping cloth wet and do not allow the soldering flame to burn the compressor lead out cable caution only after discharging all freon 11 Disassemble Capillary Sub assembly Unsolder the soldering points connecting the capillary sub assy and the other pipelines and remove the capillary sub assy 12 Disassemble Compressor Firstly unsolder the pipes connecting the compressor and then unscrew the three foot nuts at the compressor Soldered dots to remove the compressor Nut with washer Four way valve Capillary Sub as
31. n is provided for the compressor 3 5 4 Change of Timer When the system is under TIMER ON OFF status switch on or off the unit by pressing ON OFF key by remote controller Timer can be reset The system will run under the last status setting 3 6 Sleep Function Setting SLEEP function under COOL or DEHUMIDIFY mode the preset temperature will automatically rise by 1 C after 1 hour and rise by another 1 C after 2 hours Preset temperature will rise by 2 C in total within 2 hours After that the unit will run at this preset temperature the indoor fan will run at preset speed Setting SLEEP function under HEAT mode the preset temperature will automatically decrease by 1 C after 1hour and decrease by another 1 after 2 hours Preset temperature will decrease by 2 in total within 2 hours After that the unit will run at this preset temperature the indoor fan will run at preset speed No sleep function under fan mode and auto mode 3 7 Speed Control of Indoor Fan The indoor fan will select fan speed HIGH MED or LOW automatically according to the change of ambient temp It can also be set by remote controller 3 8 Buzzer When the unitis energized pressed or receives a signal from remote controller the buzzer will give out a beep 3 9 Swing Control After energized guide louver will first anticlockwise turn to A position and then close the air outlet After the unit is turned on guide louver will return standby to max air outle
32. or Fixing Screw then lift it upwards to remove it Unscrew the screws fixing the motor and pull out the connection line between Motor it and electric box to remove it Motor Support Motor Support Motor Wire Fixing screw Fig 7 20 Disassemble Four way Valve Only for cooling and heating unit Unscrew the fastening nut of the four way valve coil and remove the coil Wrap the four way valve with Four way wet cotton and unsolder the 4 weld spots connecting Valve the four way valve to take it out Welding process should be as quick as possible and keep wrapping cotton wet all the time Be sure not to burn out the lead out wire of compressor Fig 7 21 Operating Procedures Photos Disassemble Capillary Unsolder the four welding points connecting the two capillary sub asslies with the liquid valve and the condenser and remove the capillary sub assy As show in Fig 7 22 Capillary Fig 7 22 PG Disassemble Gas Valve and Liquid Valve M Liquid Valve Unscrew the four bolts fixing the two valves unsolder the welding point connecting the gas valve with the return air pipe and remove the gas valve caution when unsoldering the soldering point wrap the gas valve completely with wet cloth so as to prevent the valve body from harmed by high temperature Unscrew the four bolts fixging the liquid valve and remove the liquid valve refer to Figure 7 2
33. or runs but outdoor fan doesn t run Breakage of outdoor main control board AP gt Replace the main control board AP2 Wrong wire connection Wire according to the circuit diagram Breakage of outdoor fan capacitor Replace the fan capacitor Malfunction of compressor Replace the compressor When cooling or Poor contact of connection between the Re fasten the connection heating outdoor main control board AP2 and module AP3 fan runs but compressor doesn t run Abnormal input of power module APA Check if input is 320 If not replace the rectifier Abnormal output of power module AP4 Replace the power module AP4 Compressor temperature is too high L g Cool the compressor for 30 min before running When cooling or heating outdoor fan runs but Wrong wiring m Wire according to the circuit diagram compressor doesn t run _ Damage of outdoor main control board AP2 x Replace the outdoor main control board AP2 Burn out or broken wire of indoor fan motor Repair or change the fan motor Fan doesn t run Up Us when FAN mode Wrong wiring Wire according to the circuit diagram is set Circuit break or damage of fan motor capacitor y Replace the indoor main control board PCB
34. or will display by current state Every time of receiving command from remote controller preset temp will display blink for 10s In other conditions ambient temp displays In normal state power supply mode fan speed preset temp indicator will display by current state Every time of receiving command from remote controller preset temp will display blink for 10s In other conditions ambient temp displays Controller Function of Outdoor Unit 1 Temperature Parameters Outdoor exhaust temperature Texhaust Outdoor ambient temperature Tout amb 2 Basic Functions In each mode once started the compressor can not be stopped until it has been running for 6 min excluding malfunction protection and stopping the compressor for mode switching once stopped the compressor should be started 3 min delay including mode switching stopping the unit for temp reached or by remote control compressor will start after 5S of the indoor fan 2 1 Cooling Mode 2 1 1 Working Conditions and Process of Cooling the compressor is in off status and Tin amb Tpreset 0 5 start the unit in cooling mode in which case outdoor fan and compressor start running and microcomputer will auto adjust the frequency of compressor by cooling capacity requirements In cooling running if 0 lt Tpreset Tin amb lt 2 compressor will run at low frequency e n cooling running if capacity requirements is 0 unit stop for cooling and Tpres
35. or will run with increased frequency required by capacity Indoor fan will run in 2 min at most If compressor is stopped for malfunction in heating mode the indoor fan will run by blowing exhaust heat 3 Current Protection Function in Cooling Heating Dehumidifying Auto Mode 3 1 Overload pretection When Ttube is detected too high the compressor will run in limited or dropped frequency When Ttube goes on rising over the stated value the compressor will stop If resumes normal so does the complete unit according to capacity requirements If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 3 2 Delay pretection for compressor Once be stopped the compressor can not be restarted within 3mins 3 3 Exhaust Temperature Pretection If it is detected by the outdoor controller that the exhaust temperature is too high the compressor will run in limited or dropped frequency If the exhaust temperature goes on rising over the stated value the compressor will stop and it is detected that the exhaust temperature has resumed normal the compressor will resume running according to capacity requirements If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overlo
36. or will stop and outdoor fan will stop running in 60S gt In this mode switch valve is de energized and the temp can be set the range of 16 30 1 1 2 Antifreeze Protection In cooling or dehumidify mode if it is detected that the system is under antifreeze protection the compressor will stop or run with frequency decline and outdoor fan will bestopped in 60S When antifreeze protection is releasedthe unit will resume its original operating status 1 2 Dehumidifying Mode 1 2 1 Working Conditions and Process of Dehumidifying Same with Cooling Mode gt In this mode switch valve is de energized and the temp can be set in the range of 16 30 C 1 2 2 Protection is same with Cooling mode 1 3 Fan Mode Compressor outdoor fan and 4 way valve shut off gt Temp setting range 16 30 1 4 Heating Mode 1 4 1 Working Conditions and Process of Heating If Tamb 3 CxTpreset 0 5 C the unit will start heating in which case compressor outdoor fan and 4 way will run If Tamb 3 C lt Tpreset 2 C the compressor will run at 30Hz If Tamb 3 gt Tpreset 2 C the compressor will stop running and outdoor fan will stop running after 1min delay Stop the unit or switch into other modes in heating mode the 4 way valve will de energize after the compressor has stopped for 2min In this mode the Temp setting range should be 16 30 C 1 4 2 Defrosting Process Outdoor microcomputer system will accord to the frost on evapo
37. press AUTO button under off status of the unit the unit will run under auto mode with swing f press AUTO button under on status of the unit the unit will be stopped If remote controller is given the mian unit will run under the command Y Manual switch 3 5 Timer function 3 5 1 Timer on The system will continue to run if TIMER ON is set when the system is under ON status If TIMER OFF is set when the system is under OFF status the system will start to run under preset mode upon the time for auto start 3 5 2Timer off If TIMER OFF is set when the system is under OFF status the system will maintain its standby status upon the time for auto stop Ifthe TIMER OFF is set when the system is under ON status the system will be stopped upon the tome for auto stop 3 5 3 Set TIMER ON OFF Simultaneously If TIMER ON and TIMER OFF is set simultaneously when the system is under run status the system will maintain its current operating status and be stopped upon the coming of preset time If TIMER ON and TIMER OFF is set simultaneously when the system is under stop status the system will maintain its stop status It will be started until the time for auto start Atthe time for auto start every day the system will run under preset mode At the time for auto stop the system will be stopped Noise silencing is provided under heating mode If the unit is restarted in less than 3 minutes after it is stopped 3 minute lag protectio
38. r has runfor 7 min the times of overload protection will be cleared 2 4 Current Protection Function 2 4 1 Overload protection Once detected the whole unit current the limit value 14 OA that indoor temp arrived the unit will stop to run the compressor stopped 3mins will automatically resume to running status protection times exceeds 6 times If compressor running time exceeds 7mins that the protection times will be cleared to 0 the system will be turned off and send the over current protection malfunction signal to indoor unit cannot automatically resume to run it must be press ON OFF to turn off the unit 2 4 2 Current drop frequency limit frequency control When detected the whole unit current 212 forbidden frequency rise When detected the whole unit current 13 and f gt max running frequency compressor drop frequency 2 5Communication malfunction When continuously 3mins without receive from indoor or 10s cannot receive signal from drive board that is communication malfunction outdoor unit will stop 2 6 Module protection Module protection compressor stop the unit will stop when indoor temp arrive at setting temp after compressor has stopped 3mins later it will resume to running status if continuously 6 times module protection the compressor cannot resume to run It is need to press ON OFF can resume If compressor running time exceeds 7min that the protection time will be clear to O 2
39. rator outdoor tube temp sensor to judge whether it enters defrosting process If satisfied the defrosting process compressor will stop 4 way valve reversal Compressor runs at high frequency running indoor fan will run by blowing exhaust heat 2 Current Protection Function in Cooling Heating Dehumidifying Mode 2 1 Overload pretection When Ttube is detected too high the compressor will run in limited or dropped frequency When Ttube goes on rising over the stated value the compressor will stop If Ttube resumes normal so does the complete unit according to capacity requirements If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 2 2 Delay pretection for compressor Once be stopped the compressor can not be restarted within 3mins 2 3 Exhaust Temperature Protection If itis detected by the outdoor controller that the exhaust temperature is too high the compressor will run in limited or dropped frequency If the exhaust temperature goes on rising over the stated value the compressor will stop and it is detected that the exhaust temperature has resumed normal the compressor will resume running according to capacity requirements If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprsso
40. rts or after defrosting heating and oil return are completed malfunction of outdoor tube temp sensor can not be detected 4 Malfunction of other outdoor temp senors will be detected soon after the unit is started The detection will last 30s 5 Once ma D11 Definition D13 Definition 1blink Compressor running 1blink Stop for refrigerating overload 1blink Quick refrigerating heating 2 blinks Stop for exhaust protection 2 blinks Stop for heating overload 2 blinks Defrosting 3 blinks stop for NEC drive module protection 3 blinks Fault of communication with indoor unit 3 blinkg Oil return Ablinks stop for overcurrent protection Ablinks Fault of communication with NCE module Ablinks Nominal refrigerating heating 5blinks Stop for overload 5blinks Fault of communication with computer 5blinks refrigerating heating Gblinks Stop for refrigerating antifreeze 6blinks Fault of outdoor ambient sensor 6blinks Medium refrigerating heating 7blinks Stop for sensor fault 7blinks Fault of outdoor tube sensor 7 blinks Min refrigerating heating Stop for communication fault including 8blinks 8blinks indoor unit and NEC drive module Fault of outdoor exhaust temperature sensor 8blinks Stop Low pressure unrestorable for compressor high voltage 1 Communication malfunction 9blinks 9blinks Preseived t from indoor unit V Obli k for compressor low voltage
41. sy Disassembly Procedure of Outdoor Unit Operating Procedures Photos Disassemble Front Side Plate Unscrew the screws fixing the front side plate to remove it As show in Fig 7 13 Disassemble Top Cover Unscrew the screws fixing the top cover and then lift the top cover to remove it As show in Fig 7 14 Screws Disassemble Rear Grill Unscrew the screws fixing rear grill and rear side msi Screws plate After removing rear grill disassemble rear side panel sub assy As show in Fig 7 15 Front Side Plate Fig 7 13 Fig 7 15 Operating Procedures Photos Disassemble Cabinet Unscrew the screws fixing the cabinet to remove it Disassemble the electric box Screw off 4pcs screw which fix the electric box then can take off the electric box cover Screw off 5pcs screw from electric box pull Electric out the wire terminal of electric box then lift Box it up can take off it Disassemble the rear side plate screw off 8pcs screw which fixed the rear side plate then can disassemble the rear side plate Operating Procedures Photos Disassemble Axial Flow Fan Unscrew the nut fixing the fan with a spanner to take out the fan Axial Flow Fan Disassemble Outdoor Motor Unscrew the screws fixing the motor support and x Mot
42. t D2 for heating for cooling guide louver will first turn to air outlet D1 and then return standby to L1 If the unit is in swing condition the guide louver will swing between L1 and D1 for cooling and between L and D2 for heating After the unit is off guide louver will anticlockwise turn to A position to close air outlet 3 10 Memory Function What can be memorized includes mode swing preset temperature preset fan speed If the system is in timer and sleeping status preset timer and sleeping can not be memorized and will be canceled after the power is off which must be reset 3 11 Indoor Indicators In normal state power supply mode fan speed preset temp indicator will display by current state Every time of receiving command from remote controller preset temp will display blink for 10s In other conditions ambient temp displays Controller Function of Outdoor Unit 1 Temperature Parameters 1 1 Cooling Mode 1 1 1 Working Conditions and Process of Cooling If the compressor is in off status and Tin amb Tpreset 0 5 C start the unit in cooling mode in which case outdoor fan and compressor start running and microcomputer will auto adjust the frequency of compressor by cooling capacity requirements In cooling running if 0 lt lt Topreset Tin amb lt 2 C compressor will run at low frequency In cooling running if capacity requirements is O unit stop for cooling and Tpreset Tin amb gt 2 C the compress
43. will adjust frequency of comprssor according to heating requirements Inheating process if TprestC lt Tamb 3 C lt CTpresett 2 compressor will run at low frequency in heating process if Tamb 3 gt Tpresett 2 the compressor will stop running and outdoor fan will stop running after 60 S delay Note Stop the unit or switch into other mode in heating mode the 4 way valve will de energize after the compressor has stopped for 2 min gt In this mode the reversal valve is energized and temp setting range is 16 30 3 2 4 2 Logic Control of Outdoor Fan If lt 19 the outdoor fan will run at high speed If 2 2 1 the outdoor fan will run at low speed In running process if 19 lt lt 21 the speed will remain original During running the outdoor fan will be forced to run at high speed for 3min and then turn to logical speed eis 2 4 3 Defrosting Process If it is detected the defoeting is required and if the compressor running frequency is a little higher the frequency will first reduced to some level and then the compressor and indoor fan stop 50s later outdoor fan stops meanwhile 4 way valve stops after 45 second delay The compressor will restart with 90Hz of running frequency in 558 to defrost Upon defrsoting is completed compressor running frequency will decrease to 60Hz and 4 way valve and outdoor fan will start 10s later compress
44. without prior notice Exploded View of Outdoor Unit 111215141516 17 181920212225 n Components and Parts List of Outdoor Unit Part Code Description ASH 24AIN PT Front Grill 01473001 Housing 01433011 Small Handle 26235401 Clapboard Assy 01233039 Axial Flow Fan 10335253 Fan Motor FW60T 15013703 Motor Support Sub Assy 01703087 Condenser Assy 01103910 Temp Sensor Support 24213005 Top Cover 01255262 Rear Grill 01475252 Reactor 43120011 Relay VC15 3A1B 44020334 Electric Box Assy 01403592 Module Support 24213008 JGP011 30111018 Electric Box Cover Sub Assy 01403629 Main PCB 2 W9W2 30039165 PCB Support up 24213029 PCB Support down 24213010 PCB Support 24213009 Main PCB 1 W9W2C 30039198 Filtering Board W9W2 30039163 Temperature Sensor 3900028001 2 N A j N 24 CE 28288888 46 Underpan Assy 01203560 Front Side Plate 01305247 Electric Heater 32003001 Band Com pressor 1 Choke Plug 06813401 1 Electric Heater Band 765100041 0 ciis above data is subject to change without prior notice Troubleshooting Common section Analysis in this section is used for Linge Wind D C Inverter Series Before analysis you can diagnose according
45. y 1 C after 1hour and decrease by another 1 C after 2 hours Preset temperature will decrease by 2 C total within 2 hours After that the unit will run at this preset temperature the indoor fan will run at preset speed No sleep function under fan mode and auto mode 3 7 Speed Control of Indoor Fan The indoor fan will select fan speed HIGH MED or LOW automatically according to the change of ambient temp It can also be set by remote controller 3 8 Buzzer When the unitis energized pressed or receives a signal from remote controller the buzzer will give out a beep 3 9 Swing Control After energized guide louver will first anticlockwise turn to A position and then close the air outlet After the unit is turned on guide louver will return standby to max air outlet D2 for heating for cooling guide louver will first turn to air outlet D1 and then return standby to L1 If the unit is in swing condition the guide louver will swing between L1 and D1 for cooling and between L and D2 for heating After the unit is off guide louver will anticlockwise turn to A position to close air outlet 3 10 Memory Function What be memorized includes mode swing preset temperature preset fan speed If the system is in timer and sleeping status preset timer and sleeping can not be memorized and will be canceled after the power is off which must be reset 3 11 Indoor Indicators In normal state power supply mode fan speed preset temp indicat
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