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SERVICE MANUAL

1. 21 6 6 Re installation while the indoor unit need to be repaired 22 6 7 Re installation while the outdoor unit need to be repaired 24 T 26 22 FUNG 2 Oe IAD og 27 82 TUNCUO aA a AR 27 O29 WAIN POLO CON a eben 28 8 4 Operation Modes and 29 0 06850000 A 36 Indoor UNIL Eror DIS DAY Zn 36 JADAS SOUNO 37 1 Precaution 1 1 Safety Precaution B To prevent injury to the user or other people and property damage the following instructions must be followed B Incorrect operation due to ignoring instruction will cause harm or damage Before service unit be sure to read this service manual at first 1 2 Warning gt Installation B Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer seller a qualified electrician an Authorized se
2. EXCHANGE EXCHANGE EVAPORATOR CONDENSER GAS SIDE COMPRESSOR 10 5 Wiring Diagram 5 1 Indoor Unit 2 09 9 CBZ 12CR9V INDOOR WIRING DIAGRAM INDOOR FAN MOTOR eneee neenu anm NDOOR WI R NG D eee OPTIONAL PLUMB STEP MOTOR bi rad i ION eee eee POWER SUPPLY gt mule LOUVER_MOTOR CN11 14 5 i INDOOR PCB ROOM TEMP SENSOR CN2 CN17 2 2 i 2 JX1 128 TEMP SENSOR LNs CN5 J on ae 7 eee tee 1 BIH OUTDOOR UNIT rpansFoRMER SWITCH BOARD DISPLAY BOARD Notes This symbol indicates the element 15 optional the actual shape shall prevail 202032590802 11 INDOOR FAN MOTOR INDOOR WIRING DIAGRAM OPTIONAL PLUMB STEP MOTOR OD oe 3 o ai SH an _ CN1 15 0813 CN12 CN3 OUVER MOTOR CN11 14 POWER SUPPLY i a 5 o INDOOR PCB RED N 138 0117 ROOM TEMP SENSOR 115 2 JX1 Y G PIPE TEMP SENSOR lins CNS 110 p D 3 7 LNS OUTDOOR UNIT TRANSFoRmeR SWITCH BOARD DISPLAY BOARD
3. 6500 663kgf cm 6700 683kgf cm 6 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Nominal cross sectional area gt 3 and lt 6 0 75 A fT PB and S250 fT The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which located on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 16 6 3 Pipe length and the elevation Pipe size Standard Max Additional length Elevation Length refrigerant Btu h Gas Liquid m B A m g m s 8 s 8 s gt Indoor unit Outdoor unit Caution The capacity test is based on the standard length and the maximum permissive length is based on the system reliability The oil trap should be installed per 5 7 meters 17 6 4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrigerant system Therefore the indoor units and the pipes between indoor and outdoor un
4. replace the PCB directly Otherwise No gt Correct the connection check whether the EEPROM chip plugged in PCB well Yes v Replace the indoor PCB 37 9 2 2 Indoor unit and outdoor unit communication protection error diagnosis and solution E1 Power off then turn on the unit 5 seconds later reconnect the power wire ls the error still displaying after several minutes Yes Check all the wirings between indoor and outdoor indoor PCB and outdoor PCB following the wiring diagram Are all the wirings connected correctly Yes y Measure Vs is it moving alternately between positive value and negative value No Vs is the voltage between 5 and N of outdoor unit Yes Is the wiring to the indoor PCB y Is the wiring to the outdoor PCB connected correctly connected correctly Yes Yes Change the outdoor Main PCB Change the indoor PCB Power Is the error extinguished Power on Is the error extinguished No No y y Change the outdoor main PCB Change the outdoor main PCB 38 9 2 3 Zero crossing detection error diagnosis and solution E2 Check if the connections and power supply is normal Yes y Indoor PCB is defective Replace indoor PCB No Cor
5. Notes This symbol indicates the element is optional the actual shape shall be prevail 202032890561 CBZ 12CR9V A1 INDOOR WIRING DIAGRAM _______ 202033090734 7 UE ANT l FAN CAPACITOR BOARD L N JT 5 1 CN5 112 CN 14 CM 3 PRA 0140 TRANSFORMER 5 I S a CN8 OPTIONAL PIPE SENSOR j 5 40142 WREE ie 1 CBZ 09CR9V A1 5 2 Outdoor Unit 2 09 9 1 CBZO 12CRIV A1 202037391056 SENSOR DISCHARGE SENSOR CN100 BLUE RED BLACK CN2 U 1 CN7 V CNB W 55 YG 9 BLACK BLACK REACTOR 16929 CN4 AMBIENT HEAT EXCHANGER YIG OPTIONAL 00 SENSOR a e Hi bt 1 LN Seo 7 INDOOR UNIT 777 00 1 CNG Note according to E different terminals vil 48 zel GND can be connected 1 2 OW in different ways E HEATER 1 CN13 8 OUTDOOR FAN A gpa OPTIONAL HEATER 13 CBZO 18CR9V A1 HEAT BLACK ILP THP SEUR FHI TE 111 OPTIONAL HEATER Cy CNIS DG en DISCH
6. Check if the wiring between module PCB and compressor No gt Correct the connection connected correctly Yes qe continuity check Check if the IPM No y Replace the module PCB terminal resistance values are uniform Yes y lt Check if the IPM installed correctly No Yes 4 Check if the outdoor fan Correct the connection of fan motor Correct the installation tighten the screws and apply silicon grease No can run properly or replace the fan motor Yes Replace outdoor control PCB Does the problem still remain Yes Replace the compressor 9 2 7 Over voltage or too low voltage protection diagnosis and solution P1 Check if the power No Disconnect the unit with power supply and try to supply is normal restart the unit when power supply gets normal Yes Correct the connections connections are good Yes Check if the voltage between P and N is around DC 320V No Replace outdoor control PCB 41 9 2 8 Inverter compressor drive error diagnosis and solution P4 Check all the wires between control gt PCB module PCB and compressor Correct the connections Yes IPM continuity check Check if the IPM
7. Ti Ts 4 25 F3 2 0 15 10 0 5 1 0 0 1 8 4 4 3 Low indoor room temperature protection In drying mode if room temperature is lower than 100 the compressor will stop and not resume until room temperature exceeds 12 8 4 4 4 Evaporator anti freezing protection condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode 8 4 4 5 The outdoor fan operates same as in cooling mode 8 4 5 Forced operation function 8 4 5 1 Enter forced operation function Pressing the touch button once the machine will transfer into forced auto mode if pressing the button once again the machine will turn into forced cooling mode the third pressing will stop the unit and the forth pressing is the start of the cycle of forced auto mode forced cooling mode and stop Refer the following chart First press Press once cooling Press once 8 4 5 2 In forced operation mode all general protections and remote control are available 8 4 5 3 Operation rules Forced cooling mode 33 The compressor runs at F2 frequency and indoor fan runs as breeze Running 30 minutes the machine will turn to auto mode as 241 setting temperature Forced auto mode The action of forced auto mode is the same as normal auto mode with 241 setting temperature 8 4 6 Timer function 8 4
8. terminal resistance values are uniform Replace outdoor module PCB Yes Replace outdoor control PCB Does the problem remain Yes Replace the compressor 42 Main parts check 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester 5 Tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 sensor Measure the resistance value of each winding by using the multi meter Table 1 Some frequently used data for T1 T2 T3 and T4 sensor 40 E T1 T2 T3 T4 5 Eh 255 Temperature 43
9. After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position 19 Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 3 Adding the refrigerant if the pipe length gt 5m a Ta Indoor unit SEZ Liquid side 2 o unit da 2 way i way valve Open 4 Hi 1 pen 10 Charging r KE 2 5 cylinder Electronic scale Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure the liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press t
10. Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 23 6 7 Re installation while the outdoor unit need to be repaired 1 Evacuation for the whole system Indoor unit Liquid side Outdoor unit fom ahe k ab Open Gas side CLOSE Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 5 Disconnect the charge hose from the vacuum pump 24 2 Refrigerant charging 3 oy EE Lo Hi Charging Hy cylinder 5 a amet Electronic scale Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the
11. 6 1 Timing range is 24 hours 8 4 6 2 Timer on The machine will turn on automatically when reaching the setting time 8 4 6 3 Timer off The machine will turn off automatically when reaching the setting time 8 4 6 4 Timer on off The machine will turn on automatically when reaching the setting on time and then turn off automatically when reaching the setting off time 8 4 6 5 Timer off on The machine will turn off automatically when reaching the setting off time and then turn on automatically when reaching the setting on time 8 4 6 6 The timer function will not change the AC current operation mode Suppose AC is off now it will not start up firstly after setting the timer off function And when reaching the setting time the timer LED will be off and the AC running mode has not been changed 8 4 6 7 The setting time is relative time 8 4 7 Sleep function mode 8 4 7 1 Operation time in sleep mode is 7 hours After 7 hours the AC quits this mode and turns off 8 4 7 2 Operation process in sleep mode is as follow After pressing ECONOMIC or SLEEP button on controller the machine will turn into sleep mode When cooling the setting temperature rises 10 be lower than 300 every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed 8 4 7 3 Timer setting is available 8 4 7 4 When user uses timer off function in sleep mode or sleep function
12. air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g each time operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 5 When the electronic scale displays the proper weight disconnect the charge hose from the 3 way valve s service port immediately If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 6 Mounted the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 25 7 Operation characteristics Cooling operation Drying operation Temperature Room temperature 217 gt 10 C Outdoor temperature 15 C 50 C For the models with 0 C 50 C low temperature cooling system CAUTION 1 If air conditioner is used outside of the above conditions certain safety protection features may come into operation and cause the
13. in timer off mode if the timing is less than 7 hours sleep function will be cancelled when reaching the setting time If the timing is more than 7 hours the machine will not stop until reaches the setting time in sleep mode 8 4 8 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the module memorizes the setting conditions before the power failure The unit will resume the previous operation setting not including Swing function 34 automatically after 3 minutes when power returns If the memorization condition is forced cooling mode the unit will run in cooling mode for 30 minutes and turn to auto mode as 24 setting temp A C is off before power off and is required to start up now the compressor will have 1 minutes delay when power on Other conditions the compressor will have 3 minutes delay when restarts 8 4 9 Vertical louver control function Optional for some models Total four type operations for vertical louver control function original orientation orientation vane adjustment and horizontal swing 8 4 9 1 Original orientation means when power on the louver will turn to the datum mark This action has the highest priority The other action of vertical louver can t act until the original orientation action stopped 8 4 9 2 Orientation means after the original orientation action the louver
14. turn the middle position of upper limit position and lower limit position 8 4 9 3 Vane adjustment pressing the control button on the remote controller to make the vertical louver turn left and right Each pressing the louver will turn 6 C If pressing the button during the original orientation the louver will only turn 6 the original orientation action stopped regardless the pressing time No action when the unit is stopped 8 4 9 4 Horizontal swing means the louver can auto swing horizontally in the allowable range if pressing the button on the remote controller Pressing once the louver starts movement the second pressing is to stop the moving If indoor fan stopped the horizontal swing is invalid 8 4 10 8 Heating optional In heating operation the preset temperature of the air conditioner can be as lower as 8 which keeps the room temperature steady at 8 and prevents household things freezing when the house 15 unoccupied for a long time in severe cold weather 35 9 Troubleshooting 9 1 Indoor Unit Error Display Display LED STATUS Open circuit or short circuit of room or evaporator temperature E6 sensor Note E4 8 Reserved function 36 9 2 Diagnosis and Solution 9 2 1 EEPROM parameter error diagnosis and solution E0 Shut off the power supply turn it on 5 seconds later Is it still displaying the error code Yes If the EEPROM chip is welded on PCB
15. ComfortBreeze SERVICE MANUAL DC INVERTER AIRCONDITIONER SPLIT WALL MOUNTED TYPE CONTENTS Te tected cin on 1 Ie Sate 5 12 10 28 0 oe 1 a 1 2 aga ris Sines Se ee eee 6 GD ng eo bance 7 Sl 618 eens 7 S Z OUO tsa tebe 9 IMA Oe mA 11 INGOOP onee ek denken abai 11 SOUS Or eeehhh 13 tA lo age CRE 16 6 1 Wrench torque sheet for installation 8 16 6 2 Connecting the 16 6 3 Pipe length and Ie 17 OA Installation Tor mmh 18 6 5 Adding the refrigerant after running the system for MANY years
16. M Filter O Self diag function Bio Filter O Hydrophilic aluminum fin Golden Fin O Anti rust cabinet Self Clean O Valve protection cover Follow me O PTC Heating Belt O 8 degree heating O Compressor Crankcase Heater O O optional function 3 Dimension 3 1 Indoor Unit MS9V 24CRDN1 NCOW 120mm or more to wall 4 Hooked Part 1 150mm more to ceiling 1084 120mm or more Indoor Unit Outline 3 2 Outdoor Unit More than 30cm gt More than 60cm Service space PRA PSI SEPA PLS ff ff LEI AAPA 11 T H H Air inlet W1 W Dimension Mode w H A B CBZ 09CR9V A1 70 240 50 757 458 250 CBZ 12CR9V A1 780 250 540 843 549 276 2418 9 1 760 285 590 823 530 290 CBZ 24CROV A1 845 335 695 918 560 335 4 Refrigerant Cycle Diagram INDOOR OUTDOOR LIQUID SIDE WOOT CAPILIARY TUBE
17. URGE SENSOR HEATER 2 YELLOW HEATER 1 111 BROWN JETE ETE ele 1616 49 YG WD LN SGI UNI Ty V CNT OUTDOOR 29 4 MAIN PCB BLUE wh CAM HE FELLOW MAD CLA I 25 ORANGE 202037790292 17 717 81310181015 M 1 ORANGE OUTDOOR WIRING DIAGRAM CAPACI TOR 5 suon 14 CBZO 24CR9V A1 ACK OLP TEMP SENSORR AMBIENT NZ CN18 OUTDOOR fue at MAIN zom BLUE t TO INDOOR UNIT POWER SUPPLY OUTDOOR FAN COMPRESSOR Y G 4 YELLOW REACTOR2 R6025 RE ACTOR 2701207 ED GE 202038090482 OUTDOOR WIRING 15 6 Installation details 6 1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque mm inch N cm N cm 0635 14 1500 153kgf cm 1600 163kgf cm 952 38 2500 255kgf cm 2600 265kgf cm 127 1 2 3500 357kgf cm 3600 367kgf cm 159 58 4500 459kgf cm 4700 479kgf cm
18. acuum pump to evacuate 18 6 Make evacuation for 30 minutes and check whether the compound meter indicates 0 1Mpa If the meter does not indicate 0 1Mpa after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after pumping 50 minutes please check if there are some leakage points Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 7 Turn the flare nut of the 3 way valves about 45 counterclockwise for 6 or 7seconds after the gas coming out then tighten the flare nut again Make sure the pressure display in the pressure indicator is a little higher than the atmosphere pressure Then remove the charge hose from the 3 way valve 8 Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 3 way valve 2 Air purging by refrigerant a Outdoor unit Valve 1 Gas side wl Charging cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve 3 Air purging Open the valves on the charging cylinder and the charge set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for seconds then closing it for 1 minute repeat 3 times
19. dense and wet or damage furniture B Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock B Do not place anything on the power cable There is risk of fire or electric shock B Do not plug or unplug the power supply plug during operation There is risk of fire or electric shock B Do not touch operation the product with wet hands There is risk of fire or electric shock B Do not place a heater or other appliance near the power cable There is risk of fire and electric shock B Do not allow water to run into electric parts It may cause fire failure of the product or electric shock B Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product B Do not use the product in tightly closed space for a long time Oxygen deficiency could occur B When flammable gas leaks turn off the gas and open a window for ventilation before 2 turn the product on Do not use the telephone or turn switches on or off There is risk of explosion or fire m If strange sounds or small or smoke comes from product Turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire Stop operation and close the window in storm or hurricane If possible remove the product from the window before the hurricane arrives There is risk of property damage failure of product or elec
20. er on 14 43 and compressor has stopped for over 3 hours the compressor heating cable will work Preheating mode A weak current flows through the coil of compressor from the wiring terminal of compressor then the compressor is heated without operation Preheating release condition gt 51 or user turns on the machine and compressor runs preheating function will stop 28 Crankcase Heater It starts when 4 lt 50 and stops when 14215 8 4 Operation Modes and Functions 8 4 1 Fan only mode 1 Outdoor fan and compressor stop 2 Temperature setting function is disabled and no setting temperature is display 3 Indoor fan can be set to high med low auto 4 The louver operates same as in cooling mode 5 The action of auto fan in fan only mode is the same as auto fan in cooling mode with 24 temperature 8 4 2 Cooling Mode 27 5 27 25 5 25 8 4 2 1 Compressor running rules The operation frequency of compressor after starting submits to following rule Ta 45 43 40 38 30 28 22 20 High Medium Low Fmax F4 Fmax F7 Fmax F8 Fmax F6 Fmax F3 29 setting After A C starts up the compressor will run at the Fmax frequency for 7 minutes During the 7 minutes frequency limitation is active 7 minutes later compressor running frequency will be co
21. he check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the table disconnect the charge hose from the 3 way 5 service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 20 6 5 Adding the refrigerant after running the system for many years en Indoor unit Liquid side wl 0 away valve Open li EE al INN Charging cylinder or S Electronic scale Procedure 1 Connect the charge hose to the 3 way service port open the 2 way valve and the 3 way valve Connect the charge hose to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cy
22. he gauge indicates 0 1MPa 6 Set the 3 way valve to the closed position immediately Do this quickly so that the gauge ends up indicating 0 3 to 0 5Mpa Disconnect the charge set and tighten the 2 way and 3 way valve s stem nuts Use a torque wrench to tighten the 3 way valves service port cap to a torque of 18N m Be sure to check for gas leakage 22 2 Air purging by the refrigerant Qutdoor unity 00 i way Valve Charging cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve Leave the valve on the charging cylinder closed 3 Air purging Open the valves on the charging cylinder and the charge set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7
23. its must be leak tested and evacuated to remove gas and moisture from the system Gas leak check Soap water method Apply soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage 1 Air purging with vacuum pump Indoor unit Liquid side Outdoor unit 21 120 Two way g Close Gas side Manifold valve rt Close Compound meter 5 Pressure 5 gauge Handle Lo ep U Handle Hi 1 Charge hose 7 Charge hose Vacuum 2 pump C 2 Vacuum pump 1 Completely tighten the flare nuts of the indoor and outdoor units confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Connect the charge hose of handle hi connection to the vacuum pump 4 Fully open the handle Lo of the manifold valve 5 Operate the v
24. linder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low side disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 21 6 6 Re installation while the indoor unit need to be repaired 1 Collecting the refrigerant into the outdoor unit Outdoor unit Ym a AN Gas side 2 Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position Be sure to use a hexagonal wrench to operate the valve stems 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Air purging of the charge hose Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then close it quickly 4 Set the 2 way valve to the close position 5 Operate the air conditioner at the cooling cycle and stop it when t
25. mage B Do not insert hands or other object through air inlet outlet while the product is operated There are sharp and moving parts that could cause personal injury Do not drink the water drained from the product It is not sanitary could cause serious health issues m Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury B Replace the all batteries in the remote control with new ones of the same type Do not mix old and mew batteries or different types of batteries There is risk of fire or explosion B Do not recharge or disassemble the batteries Do not dispose of batteries a fire They may burn of explode B If the liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote of the batteries have leaked The chemical in batteries could cause burns or other health hazards 2 Function Model Names of Indoor Outdoor Units Indoor units Outdoor units CBZ 09CROV A1 CBZO O9CR9V A1 DC Inverter CBZ 12CR9V A1 CBZO 12CR9V A1 CBZ 18CR9V A1 CBZO 18CR9V A1 CBZ 24CROV A1 CBZO 24CROV A Filter Killer of Formaldehyde lonizer O Silver Ico Filter O Vitamin C Filter O Heat compensation O 3M HA
26. ntrolled as below 3 5 3 0 2 5 2 0 G YH While the zones of A B C are corresponding to different compressor running frequency Note When T1 Ts keep in the same temperature zone for 3 minutes the compressor will run as the below rules A E Increase the frequency to the higher level until to F8 F Keep the current frequency G Decrease the frequency to the lower level until to F1 Run at F1 for 1h if 1 155 2 compressor will stop Meanwhile the compressor running frequency is limited by the current Decrease I2ZCOOL Hold Resume 30 Off Compressor stops Decrease Decrease the running frequency to the lower level Hold Keep the current frequency Resume No limitation for frequency Note When AC is in hold zone for 3 minutes the compressor frequency will rise to the higher level frequency will increase twice at most 8 4 2 2 Outdoor fan running rules 4 High 22 5 20 8 4 2 3 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be selected as high medium low and auto Auto fan in cooling mode acts as follow 1 4 4 High 3 Medium 1 5 1 Y Low 8 4 2 4 Condenser high temperature protection When 550 lt 346010 the compressor frequency will decrease to the lower levelever
27. p and 3 minutes delay for others 8 3 2 Temperature protection of compressor top Top temp protector cut off for 30s and restart the compressor with 3 minutes delay 8 3 3 Temperature protection of compressor discharge When the compressor discharge temperature is getting higher the running frequency will be limited as below rules Compressor discharge temp 5 gt 1150 for 5s compressor stop 108 lt 75 lt 1150 decrease the frequency to the lower level every minutes 90 lt T5 lt 105_ keep running as the current frequency 75 lt 900 no limit for frequency or restart compressor 8 3 4 Fan Speed is out of control When Indoor Fan Speed is too low lower than 300RPM for 50 seconds the unit stops and LED displays failure 8 3 5 Inverter module Protection Inverter module Protection itself has a protection function against current voltage and temperature If these protections happened the corresponding code will display on indoor unit LED The unit will stop operation if the protection occurred and recover 3min delay after the protection disappeared 8 3 6 Indoor fan delayed open function When system starts up the louver will be active immediately the indoor fan will open after 10s 8 3 7 Compressor preheating functions Preheating permitting condition If the main relay closed T4 lt 3 and the machine is first pow
28. rect the connections Turn on the unit when the power supply is good 9 2 4 Indoor fan speed has been out of control diagnosis and solution E3 Shut off the power supply and turn it on 5 seconds later 15 it still displaying No gt The unit operates normally the error code Yes Shut off the power Disassembly the supply rotate the cross connection between fan by hand Does it No fan and motor check if No gt Replace the bearing rotate properly the bearing is normal Yes Yes Check the wires of fan motor Are all the No gt Correct the connections Replace indoor fan motor connections good Yes Y A indoor fan motor is it normal Yes Replace indoor PCB 4 Check the resistance value of No 39 9 2 5 Open circuit or short circuit of temperature sensor diagnosis and solution E5 E6 Check the connections between temperature sensor and PCB Are f No Correct the connections 7 the connections good Yes Check the resistance value of the sensor via tablet Yes gt Replace indoor or outdoor and table 2 is it normal No Replace the sensor and check if the problem happen again 40 9 2 6 IPM malfunction IGBT over strong current protection diagnosis and solution P0
29. rvice center Do not disassemble or repair the product there is risk of fire or electric shock Always ground the product There is risk of fire or electric shock B Install the panel and the cover of control box securely There is risk of fire of electric shock B Always install dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock B Use the correctly rated breaker of fuse There is risk of fire or electric shock B Do not modify or extend the power cable There is risk of fire or electric shock B Do not install remove or reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury B Be caution when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the fins on the condenser and evaporator B For installation always contact the dealer or an Authorized service center There is risk of fire electric shock explosion or injury B Do not install the product on a defective installation stand It may cause injury accident or damage to the product B Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury B Do not let the air conditioner run for long time when the humidity is very high and a door or a window is left open Moisture may con
30. the neighborhoods may cause a problem for your neighbors m Use two or more people to lift and transport the product Avoid personal injury B Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation gt Operational B Do not expose the skin directly to cool air for long periods of time Do not sit in the draft This could harm to your health B Do not use the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property B Do not block the inlet or outlet of air flow It may cause product failure Use soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire electric shock or damage to the plastic parts of the product B Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury B Do not step or put anything on the product outdoor units There is risk of personal injury and failure of product B Always insert the filter securely Clean the filter every two weeks more often if 4 necessary A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or da
31. tric shock B Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure B When the product is soaked flooded or submerged contact an Authorized service center There is risk of fire or electric shock B Be caution that water could not enter the product There is risk of fire electric shock or product damage Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock B Turn the main power off when cleaning or maintaining the product There is risk of electric shock B When the product is not be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation m Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage gt CAUTION Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product 3 m Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage B Keep level even when installing the product To avoid vibration of water leakage B Do not install the product where the noise or hot air from the outdoor unit could damage
32. unit to function abnormally 2 Room relative humidity less than 80 If the air conditioner operates in excess of this figure the surface of the air conditioner may attract condensation Please sets the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 Optimum performance will be achieved within this operating temperature 26 8 Electronic function 8 1 Abbreviation T1 Indoor room temperature T2 Coil temperature of evaporator Coil temperature of condenser T4 Outdoor ambient temperature T5 Compressor discharge temperature 8 2 Display function 8 2 1 explanation on indoor display board Temperature Run indicator Flash at 0 5Hz when the unit is standby Illuminate when the unit is turned on 3 Auto indicator This indicator illuminates when the air conditioner is in AUTO operation 9 This indicator illuminates when TIMER is set ON OFF TEMPERATURE indicator Temperature Usually it displays the temperature settings When change the setting temperature this indicator begins to flash and stops 20 seconds later It displays the room temperature when the air conditioner is in FAN only operation and the range of that is 0 50 It will also display the error codes when malfunction or protection happen 27 8 3 Main Protection 8 3 1 Three Minutes Delay at restart for compressor 1 minutes delay for the 1 time start u
33. y min until to F1 31 and then run at F1 When 3 lt 52 0 the compressor will not limit the frequency again and resume to the former frequency When gt for 5 seconds the compressor will stopand restart until T3 lt 52 8 4 2 5 Evaporator low temperature protection When 2 lt 00 the compressor will stop and restart when T2 gt 5 When 05 lt 72 lt 40 the compressor frequency will decrease to the lower level every minute until stop the compressor When 40 512571 the compressor will keep the current frequency When 2 71 the compressor frequency will not be limited 8 4 3 Auto mode This mode can be chosen with remote controller and the setting temperature can be changed between 17 30 In auto mode the machine will choose cooling or fan only mode according to AT AT T1 Ts 11 15 Running mode AT gt 1 Cooling lt 1 Fan only Indoor fan will run at auto fan of the relevant mode The louver operates same as in relevant mode If the setting temperature is modified the machine will rechoose running function 32 8 4 4 Dehumidify mode 8 4 4 1 Indoor fan speed is fixed at breeze and can t be changed The louver angle is the same as in cooling mode 8 4 4 2 Compressor running rules

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