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 Air Conditioner Service Manual

 

 

0

 

 

 

 

 

    

Inverter air conditioner 

 

Service Manual 

 
 
 

Models 

CWH09TBAI/CWH09TBAO

  

                   

      

      

CWH12TBAI/CWH12TBAO

    

 
 
 
 
 
 

CONTENTS 

 

1. Important Notice

2. Product Dimensions

 

3

. 

Refrigeration cycle diagram

 

4

. 

Operation details

5

. 

 Wiring diagram

 

6

. 

Explosion view and parts

 

7

. 

Precaution 

 

8

. 

 

Names of parts

 

9

. 

Installation

10. Introduction R32/R290 air conditioner installation 

 

11

. 

Trouble shooting

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Содержание CWH09TBAI

Страница 1: ...WH09TBAO CWH12TBAI CWH12TBAO CONTENTS 1 Important Notice 2 Product Dimensions 3 Refrigeration cycle diagram 4 Operation details 5 Wiring diagram 6 Explosion view and parts 7 Precaution 8 Names of part...

Страница 2: ...le for the interpretation of this information nor can it assume any liability in connection with its use The information specifications and parameter are subject to change due to technical modificatio...

Страница 3: ...2 3 Product Dimensions Indoor Unit Outdoor Unit Model Indoor unit Outdoor unit A B C D E F G H I J K CWH09TBAI CWH09TBAO 777 255 205 700 550 256 439 302 277 8 48 55 CWH12TBAI CWH12TBAO 777 250 205 70...

Страница 4: ...y Compressor Accumulator Heat exchange condenser Heat exchange Evaporator 2 way valve Liquid side 3 way valve Gas side Cooling Heating Gas side 3 way valve Liquid side 2 way valve Heat exchange Evapor...

Страница 5: ...f you don t press any button within 10 seconds the remote controller is preset as Heat Pump automatically Note If the air conditioner you purchased is a Cooling Only one but you preset the remote cont...

Страница 6: ...r or load of compressor is abnormity the air conditioner will shut down and show error code 7 IPM module protection IPM module has high temperature over current protection itself if there is signal fe...

Страница 7: ...s in cooling mode the set temperature ST is RT 2 After that t he system will operate in cooling mode with lowest fan speed for 30 minutes and then change to middle speed for 30seconds as a cycle Durin...

Страница 8: ...heat exchanger Temperature OPT is continuously less than 3 while the unit runs for more than 120 minutes and OPT is keeping below 2 for more than 3 minutes Before the air con comes into defrosting com...

Страница 9: ...indoor unit for function test NOTE Do not press the EMERGEMCY Operation switch during normal operation 8 AUTO RESTART Function Option While air conditioner is operating in one mode all of its operatio...

Страница 10: ...z Outdoor failure display There is a LED on outdoor power board it blinks 1s ON and 1s OFF while compressor standby and it always light ON while compressor running If there is failure happened on ODU...

Страница 11: ...pressor overheat fault compressor top switch 9 Short circuit open circuit fault of outdoor temperature sensor 10 Short circuit open circuit fault of outdoor heat exchanger temperature sensor 11 Short...

Страница 12: ...Air Conditioner Service Manual 11 5 Wiring diagram INDOOR UNIT OUTDOOR UNIT Mode CWH09TBAI CWH09TBAO CWH12TBAI CWH12TBAO...

Страница 13: ...Glass Panel 1 15 1170120044B Power Supply Cord 1 16 210737654H Electrical Box Cover 1 17 210736832 Cable Clamp 1 18 210900478A Terminal 1 19 210901224 Transformer 1 20 210901714CE Main PCB 1 21 210900...

Страница 14: ...Panel 1 15 1170120044B Power Supply Cord 1 16 210737654H Electrical Box Cover 1 17 210736832 Cable Clamp 1 18 210900478A Terminal 1 19 210901224 Transformer 1 20 210901714CE Main PCB 1 21 210900333 In...

Страница 15: ...Air Conditioner Service Manual 14 Mode CWH09TBAO CWH12TBAO OUTDOOR UNIT 10 11 12 8 9 7 6 5 17 13 14 16 15 19 18 20 21 23 22 24 4 3 2 1...

Страница 16: ...88B 4 way valve assembly 1 13 210800545 Base 1 14 210800541 Right plate 1 15 1120120021 Two way valve 1 16 1080050003 Valve supporter 1 17 211206766 Three way valve 1 18 1070350971 Electronic Box Cove...

Страница 17: ...923 4 way valve assembly 1 13 210800545 Base 1 14 210800541 Right plate 1 15 1120120045 Two way valve 1 16 1080050003 Valve supporter 1 17 211206766 Three way valve 1 18 1070350971 Electronic Box Cove...

Страница 18: ...ion under over voltage category III conditions and these means must be incorporated in the fixed wiring in accordance with the wiring rules z The air conditioner must be installed by professional or q...

Страница 19: ...use an excessive accumulation of dust or waste on the inner parts of the device with possible subsequent failures z The user is responsible for having the appliance installed by a qualified technician...

Страница 20: ...ir could contain gas oil or sulphur or near sources of heat z This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of exper...

Страница 21: ...l 2 Air filter 3 Special filter option 4 Display PCB 5 Vertical vane 6 Horizontal vane 7 Remote controller 9 Names of parts Outdoor unit No Name 8 Air outlet grille 9 Electronic box cover 10 2 way val...

Страница 22: ...n g 20g m A 5m CWH09TBAI CWH09TBAO 3 0 15 20g m CWH12TBAI CWH12TBAO 3 5 15 20g m Connecting cables The power cord should be selected according to the following specifications sheet Appliance Amps Wire...

Страница 23: ...OOR UNIT Do not install the outdoor unit near sources of heat steam or flammable gas Do not install the unit in too windy or dusty places Do not install the unit where people often pass Select a place...

Страница 24: ...ble flange through the hole in the wall to keep the latter intact and clean The hole must slope downwards towards the exterior Note Keep the drain pipe down towards the direction of the wall hole othe...

Страница 25: ...not bend the pipe more than three times at one point z When extending the rolled pipe straighten the pipe by unwinding it gently as shown in the picture 10 2 6Connections to the indoor unit 1 Remove...

Страница 26: ...htening procedures described for the indoor unit Note If the tightening torque is not sufficient there will probably be some leakage With excessive tightening torque there will also be some leakage as...

Страница 27: ...hen maintaining or scrapping an air conditioner When filling the combustible refrigerant any of your rude operations may cause serious injury or injuries to human body or bodies and object or objects...

Страница 28: ...ure gauge used for Refrigerant 22 can be used for Refrigerants R290 and R161 the pressure gauge used for R410A can be used for Refrigerant 32 Fire Extinguisher It is necessary to carry fire extinguish...

Страница 29: ...uring the maintenance it is a must to immediately take forced ventilation and plug up the leak source If the product is damaged to the extent that it is a must to open the refrigerating system for mai...

Страница 30: ...is a must to confirm that the refrigerating system has been drained and the system has been cleaned and ensure that there has been no refrigerant in the outdoor unit It is necessary to close the stop...

Страница 31: ...d evacuating the affected personnel urgently from the location It is necessary to inform near residents of evacuating for over 20 meters from the location make an alarm call set the emergency area and...

Страница 32: ...code display Health assembly control Communication with outdoor unit Louver motor control Indoor fan control Display pc board Indoor control board Voltage sampling Frequency generation Storage of work...

Страница 33: ...P01 P5 1 P8 VAL Electric reactor PC monitor P10 3 W P10 2 V COMP Blue W hite Red T o indoor unit Expansion valve Suction Temp sensor Out door coil T emp sensor Outdoor ambient T emp sensor COM P top...

Страница 34: ...V COMP Red White Blue T o indoor unit Expansion valve Suction Temp sensor Out door coil T emp sensor Outdoor ambient T emp sensor COMP top T emp protection Exhaust Temp sensor CN12 ORQ P13 L P14 L P1...

Страница 35: ...nd Indoor pipe coil temperature sensor IPT damage short or broken Solution check the resistance of the sensor R 25 5 k if short or broken please replace it 3 The PCB fail Solution Replace the indoor m...

Страница 36: ...or not plugged in Solution Check the connecter of sensor and slot if loose or not plugged in please connect again 2 Outdoor pipe temp sensor outdoor temp sensor exhaust temp sensor damage short or br...

Страница 37: ...efore display of E0 fault If the voltage is 0 please replace indoor main PCB 2 If the 1 N which connect to indoor unit voltage is normal measure the voltage between the outdoor terminal 1 and N If the...

Страница 38: ...se replace outdoor PCB 10 5 2 Display EA Reason Current sensor fault Solution 1 Check for refrigerant leakage to find the leakage point and recharge the refrigerant 2 Current sampling circuit broken o...

Страница 39: ...conditioner and installation again 5 If the above inspections are normal but the fault remains unsolved please replace the outdoor PCB Re energize and check the protection code on display Firstly dis...

Страница 40: ...ent indication error occurs Clean indoor or outdoor heat exchange Clean indoor heat exchange and outdoor heat exchange Check the refrigerant amount Check the installation condition Installation again...

Страница 41: ...d wire on PWB Replace P WB Cooling mode Check compressor Modify compressor terminal marking Replace PWB Does compressor rotates Replace compressor Check indoor exchange sensor and discharge sensor Mod...

Страница 42: ...nk Check terminal L N voltage Yes OK No OK Check the rectifier bridge fast recovery diode FRD and IGBT Solve as E0 Check wire connected and replace indoor PCB Normal Abnormal Replace PFC board or outd...

Страница 43: ...765 14 27 567 4 219 31 3 981 2 192 76 0 895 0 746 13 26 239 4 186 32 3 836 2 146 77 0 869 0 728 12 24 984 4 152 33 3 697 2 101 78 0 843 0 710 11 23 795 4 117 34 3 563 2 057 79 0 819 0 692 10 22 671 4...

Страница 44: ...047 2 109 21 170 7 192 5 217 33 13 25 14 18 15 17 87 1 922 1 983 2 045 20 161 6 182 1 205 34 12 72 13 6 14 54 88 1 861 1 922 1 983 19 153 1 172 3 193 7 35 12 21 13 05 13 93 89 1 802 1 862 1 923 18 145...

Страница 45: ...117 0 7837 0 8233 0 8641 10 36 04 39 39 43 01 64 4 101 4 288 4 479 118 0 7623 0 8012 0 8413 11 34 42 37 59 41 65 3 961 4 139 4 32 119 0 7415 0 7798 0 8193 12 32 89 35 87 39 1 66 3 827 3 995 4 167 120...

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