Cooper & Hunter CH-09DKT230VI Service Manual
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Cooper & Hunter CH-09DKT230VI Service Manual

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Model Numbers:
CH-09DKT230VI/ CH-09DKT230VO
CH-12DKT230VI/ CH-12DKT230VO
CH-18DKT230VI/ CH-18DKT230VO
CH-24DKT230VI/ CH-24DKT230VO

Table of Contents

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dakota HYPER MINI Split Air
Conditioner WITH HEAT PUMP
SERVICE MANUAL

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Summary of Contents for Cooper & Hunter CH-09DKT230VI

  • Page 1: Table Of Contents

    HYPER MINI Split Air Conditioner WITH HEAT PUMP SERVICE MANUAL Model Numbers: CH-09DKT230VI/ CH-09DKT230VO CH-12DKT230VI/ CH-12DKT230VO CH-18DKT230VI/ CH-18DKT230VO CH-24DKT230VI/ CH-24DKT230VO Table of Contents Precaution Part Names And Functions Dimension Refrigerant Cycle Diagram Wiring Diagram Installation Details Operation Characteristics Electronic Function Troubleshooting 10.
  • Page 2 CONTENTS 1. Precaution ..............................1 1.1 Safety Precaution ........................1 1.2 Warning ............................1 2. Part Names And Functions .......................... 4 2.1 Model Names of Indoor/Outdoor units ..................4 2.2 Part names of Indoor/Outdoor units ....................5 3. Dimension ..............................6 3.1 Indoor Unit ...........................6 3.2 Outdoor Unit ..........................9 4.

  • Page 3: Precaution

    Sharp edges could cause injury, be especially careful of the case edges and the fins on the 1. Precaution condenser and evaporator.  For installation, always contact the 1.1 Safety Precaution dealer or an authorized service center.   To prevent injury to the user or other Do not install the product on a people and property damage, the following defective installation stand.
  • Page 4 There is risk of electric shock or fire. product.  Stop operation and close the window It can avoid vibration of water leakage.  in storm or hurricane. If possible, remove Do not install the product where the the product from the window before the noise or hot air from the outdoor unit could hurricane arrives.
  • Page 5  Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury.  Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries.

  • Page 6: Part Names And Functions

    2. Part Names And Functions 2.1 Model Names of Indoor/Outdoor units Outdoor units Series Capacity Indoor units CH-09DKT230VI CH-09DKT230VO CH-12DKT230VI CH-12DKT230VO Inverter CH-18DKT230VI CH-18DKT230VO CH-24DKT230VI CH-24DKT230VO...

  • Page 7: Part Names Of Indoor/Outdoor Units

    2.2 Part names of Indoor/Outdoor units 5.9in (15cm) or more 4.75in (12cm) 4.75in (12cm) or more or more 90.55in (2.3m) or more...

  • Page 8: Dimension

    3. Dimension 3.1 Indoor Unit Model CH-09DKT230VI 32.9in 7.8in 11.0in CH-12DKT230VI (835mm) (198mm) (280mm) 39.0in 8.6in 12.4in CH-18DKT230VI (990mm) (218mm) (315mm) 46.7in 10.2in 13.5in CH-24DKT230VI (1186mm) (258mm) (343mm)
  • Page 9 (140mm ) Left rear wall hole Right rear wall 2.5in ( 65mm ) hole 2.5in ( 65mm ) 32.9in ( 835mm ) CH-09DKT230VI, CH-12DKT230VI Left rear wall hole Left rear wall hole 2.5in 65mm 10.2in (260mm) 5.3 in (135mm) 2.5in 65mm...

  • Page 10: Outdoor Unit

    3.2 Outdoor Unit More than 11.8in ( 30cm ) More than 23.6in ( 60cm ) (Service space) More than 11.8in ( 30cm ) More than 23.6in ( 60cm ) More than 27.6in (7 0cm ) Note: The above drawing is only for reference. The appearance of your units may be different. W in / mm D in / mm H in / mm...

  • Page 11: Refrigerant Cycle Diagram

    4. Refrigerant Cycle Diagram INDOOR OUTDOOR Electronic CAPILLARY expansion valve LIQUID SIDE tube 2-WAY VALVE T3 Condenser temp. sensor HEAT HEAT T4 Ambient T1 Room temp. EXCHANGE EXCHANGE temp. sensor sensor (EVAPORATOR) (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE Accumulator Compressor...

  • Page 12: Wiring Diagram

    6.3 Pipe length and the elevation (Pls refer the wiring diagram on the unit) Pipe size Models Liquid 6 Installation Details 3/8in 1/4in CH-09DKT230VI + CH-09DKT230VO (Ø9.52mm) (Ø6.35mm) 6.1 Wrench torque sheet for CH-12DKT230VI + CH-12DKT230VO 1/2in 1/4in installation CH-18DKT230VI + CH-18DKT230VO (Ø12.7mm)

  • Page 13: Installation For The First Time

    6.4 Installation for the first time 5) Operate the vacuum pump to evacuate. 6) Make evacuation for 30 minutes and check Air and moisture in the refrigerant system have whether the compound meter indicates undesirable effects as below: 14.5Psi (-0.1Mpa). If the meter does not indicate 14.5Psi (-0.1Mpa) after pumping 30 ●...

  • Page 14: Re-Installation While The Indoor Unit Need To Be Repaired

    and press the check valve on the charge set to Open the handle Lo valve of the manifold valve purge the air (be careful of the liquid slightly to purge air from the charge hose for 5 refrigerant). seconds and then close it quickly. 3) Put the charging cylinder onto the electronic 4) Set the 2-way valve to the close position.

  • Page 15: Re-Installation While The Outdoor Unit Need To Be Repaired

    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 7 seconds after the gas coming out, then tighten the flare nut...

  • Page 16: Operation Characteristics

    Temperature Cooling operation Heating operation Drying operation Mode 62℉～90℉ 50℉～90℉ 32℉～86℉ Room temperature (17℃ ～32℃) (0℃～ 30℃) (10℃～ 32℃) Outdoor temperature CH-09DKT230VI ～122 ～122 ～86 ° F ° F ° F ° F ° F ° F CH-12DKT230VI ～50 ～50 ～30...

  • Page 17: Electronic Function

    8. Electronic Function 8.1 Abbreviation T1: Indoor room temperature T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature TP: Compressor discharge temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. ION indication lamp (optional function)：This lamp illuminates when Clean Air feature is activated.

  • Page 18: Main Protection

    function. 8.3 Main Protection 8.3.7 Compressor preheating functions 8.3.1 Three minutes delay at restart for Preheating permitting condition: compressor When T4 (outdoor ambient temperature)＜ Less than 1 minute delay for the 1 time 37.4° F (3° C), the preheating function will stand-up and 3 minutes delay for others.

  • Page 19: Operation Modes And Functions

    8.4 Operation Modes and Functions and the speed can be selected as high, medium, low and auto. 8.4.1 Fan mode When the setting temperature is reached, if (1) Outdoor fan and compressor stop. the compressor stop running, indoor fan motor (2) Temperature setting function is disabled, will run in Minimum speed or setting speed.
  • Page 20 When the AC run in mute mode, the T1-Td+ΔT compressor will run with low frequency. When the current is more than setting value, the current protection function will be activated and the compressor will stop. 8.4.3.2 Outdoor fan running rules The outdoor unit will be run at different fan speed according to T4.
  • Page 21 (ΔT =T1-Ts). off the machine. 8.4.6.2 In forced operation mode, all general T1-Ts protections and remote control are available. Cooling 8.4.6.3 Operation rules: Forced cooling mode: Fan only The compressor runs at F2 frequency and indoor fan runs as breeze. After running for 30 minutes.
  • Page 22 8.4.10 Point check function Press the LED DISPLAY or LED or MUTE button of the remote controll three times, and then press the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will keep ring for two seconds.
  • Page 23 Enquiry Display value Meaning Remark information T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,-2 1. All the displaying temperature is actual T2B,TP,TH, 1b,-1A value. 2. All the temperature is °C no matter Targeted -19—99 -19—99 what kind of remote controll is used. Frequency, A0,A1,…A9 100,101,…109 Actual 3.

  • Page 24: Troubleshooting

    9. Troubleshooting Safety Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, - terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.

  • Page 25: Indoor Unit Error Display

    9.1 Indoor Unit Error Display Operation Timer lamp Display LED STATUS lamp ☆ 1 time Indoor unit EEPROM parameter error ☆ 2 times Indoor / outdoor units communication error ☆ 3 times Zero-crossing signal detection error ☆ 4 times Indoor fan speed has been out of control Indoor room temperature sensor T1 open circuit or short ☆...

  • Page 26: Outdoor Unit Error Display

    9.2 Outdoor unit error display For CH-09DKT230VI, CH-12DKT230VI，CH-18DKT230VI 290-330VDC standby connect to the bridge 210-300VDC running DR module connect to earth fuse 250V 30A connect to reactance fast recovery diode (FRD) power supply 208-230V AC connect to the terminal connect to 4-way valve t•-.H fli!l -1-+- ---- - when 4-way is on, output 208-230V AC...
  • Page 27 For CH-09DKT230VI, CH-12DKT230VI，CH-18DKT230VI Earth: connect to Ground Power Supply N_in: connect to N-line (100-130V AC input) L_in: connect to L-line (100-130V AC input) CN16 S: connect to indoor unit communication HEAT1 CN17 connect to compressor heater, 100-130V AC when is ON...
  • Page 28 For CH-24DKT230VO Connect to the I door 654321 evap.pipe out temp. se external drive DC fan T2B-A, T2B-B, T2B-C T2B-D, T2B-E motor connector 485 communication nect to exhaust temp. se CN43-4/CN37 CONNECT TO AC FAN MOTOR(LOW SPEED) CN43-3/CN36 urrent loop AC fan motor low speed connector commu...
  • Page 29 IPM board, '" ' '" TO MAIN W connecttothecompressor OVAC (standby) 10-200VAC (running)

  • Page 30: Diagnosis And Solution

    9.3 Diagnosis and Solution 9.3.1 EEPROM parameter error diagnosis and solution (E0/F4) E0/F4 Error Code Malfunction decision Indoor or outdoor PCB main chip does not receive feedback conditions from EEPROM chip. Supposed causes Installation mistake ● PCB faulty ● Trouble shooting: Power off, then restart the unit 2 minutes later.
  • Page 31 9.3.2 Indoor / outdoor unit’s communication diagnosis and solution(E1) Error Code Malfunction decision Indoor unit does not receive the feedback from outdoor unit during conditions 110 seconds and this condition happens four times continuously. Supposed causes Wiring mistake ● Indoor or outdoor PCB faulty ●...
  • Page 32 Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port. When AC is normal running, the voltage will move alternately between -25V to 25V.
  • Page 33 9.3.3 Zero crossing detection error diagnosis and solution (E2) Error Code Malfunction decision When PCB does not receive zero crossing signal feedback for 4 conditions minutes or the zero crossing signal time interval is abnormal. Supposed causes Connection mistake ● PCB faulty ●...
  • Page 34 9.3.4 Fan speed has been out of control diagnosis and solution (E3) E3/F5 Error Code Malfunction decision When indoor fan speed keeps too low (300RPM) for certain time, conditions the unit will stop and the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 35 Index 1: 1: Indoor or Outdoor DC Fan Motor (control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced.
  • Page 36 9.3.5 Open circuit or short circuit of temperature sensor diagnosis and solution (E5) E4/E5/F1/F2/F3 Error Code Malfunction decision If the sampling voltage is lower than 0.06V or higher than 4.94V, conditions the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 37 9.3.6 Refrigerant Leakage Detection diagnosis and solution (EC) Error Code Malfunction decision Define the evaporator coil temp.T2 of the compressor just starts conditions running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 ＜Tcool－35.6 ° F ( Tcool－2 ° C) does not keep continuous 4 seconds and this situation happens 3 times, the display area will show “EC”...
  • Page 38 9.3.6 Overload current protection diagnosis and solution (F0) Error Code Malfunction decision An abnormal current rise is detected by checking the specified conditions current detection circuit. Supposed causes Power supply problems. ● System blockage ● PCB faulty ● Wiring mistake ●...
  • Page 39 9.3.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution (P0) Error Code Malfunction decision When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show “P0” and AC will turn off. conditions Supposed causes Wiring mistake...
  • Page 40 For example: Note: The photos below are only for reference, it’s may be not same totally with the ones on your side.
  • Page 43 For 24K: At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below: Check whether the power voltage Restart the unit when the power supply Check whether the power voltage...
  • Page 44 9.3.8 Over voltage or too low voltage protection diagnosis and solution (P1) Error Code Malfunction decision An abnormal voltage rise or drop is detected by checking the conditions specified voltage detection circuit. Supposed causes Power supply problems. ● System leakage or block ●...
  • Page 45 9.3.9 High temperature protection of IPM module diagnosis and solution (P2) Error Code Malfunction decision If the sampling voltage is not 5V, the LED will display the failure. conditions Supposed causes PCB faulty ● Trouble shooting: Check if the fastening screws Check if the fastening screws on the PCB and IPM radiator on the PCB and IPM radiator...
  • Page 46 9.3.10 Inverter compressor drive error diagnosis and solution (P4) Error Code Malfunction decision An abnormal inverter compressor drive is detected by a special conditions detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on. Supposed causes Wiring mistake ●...
  • Page 47 IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester Normal resistance value (+)Red (-)Black...
  • Page 48 For 24K: At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below: Check whether the power voltage Restart the unit when the power supply Check whether the power voltage...
  • Page 49 9.3.11 Low pressure protection diagnosis and solution (P6) Error Code Malfunction decision When the pressure of system reach a certain value, the low pressure protector will switch off. After the pressure resume to conditions normal, the protection code will disappear. Supposed causes Wiring mistake ●...
  • Page 50 Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a 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.(TP) sensor. Measure the resistance value of each winding by using the multi-meter.
  • Page 51 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (° C--K) °C °F °C °F °C °F °C °F K Ohm K Ohm K Ohm K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683...
  • Page 52 Appendix 2 Temperature Sensor Resistance Value Table for TP (° C --K) °C °F °C °F °C °F °C °F K Ohm K Ohm K Ohm K Ohm 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9 59.98 12.21 3.392...
  • Page 53 Appendix 3: °C °F °C °F °C °F °C °F °C °F 69.8 123.8 179.6 235.4 24.8 71.6 125.6 181.4 237.2 26.6 73.4 127.4 183.2 28.4 75.2 129.2 240.8 30.2 186.8 242.6 25.5 77.9 132.8 188.6 244.4 32.9 78.8 134.6 190.4 246.2 33.8...
  • Page 54 Appendix 4 Normal voltage of P and N 208-240V(1-phase, 3-phase) 380-420V (3 phase) around 310VDC around 530VDC In operation With partial With fully With passive active PFC active PFC PFC module module module >200VDC >310VDC >370VDC >450VDC 380-420V(3phase)302phase)0 In standby...
  • Page 55 2.Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value ASM98D32UFZ ATM115D43UFZ2 ATM150D23UFZ ATF235D22UMT ATF250D22UMT Blue – 2.25Ω 1.87Ω 1.72Ω 0.75Ω 0.75Ω Blue - 68°F / 68°F/ 68°F 68°F 68°F Black (20°C) (20°C) (20°C) (20°C) (20°C) Red –...
  • Page 56 3. IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester Normal resistance value (+)Red...
  • Page 57 5: Pressure On Service Port Cooling chart: °F ° (23.89) (29.44) (35) (40.56) (46.11) 70/59 10.1 75/63 10.7 80/67 11.2 °F ° (23.89) (29.44) (35) (40.56) (46.11) 70/59 75/63 80/67 °F ° (23.89) (29.44) (35) (40.56) (46.11) 70/59 0.82 0.78 0.81 0.86 1.01...
  • Page 58 Heating Chart: °F 57/53 47/43 37/33 27/23 17/13 °C (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) (-8.33/-10.56) 30.3 28.5 25.3 22.8 20.8 32.5 30.0 26.6 25.4 23.3 33.8 31.5 27.8 26.3 24.9 °F 57/53 47/43 37/33 27/23 17/13 °C (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) (-8.33/-10.56) °F 57/53...

  • Page 59: Disassembly Instructions

    10 Disassembly Instructions Note: This part is for reference, the photos may have slight difference with your machine. 10.1 Indoor unit Parts name Procedures Remarks Front panel How to remove the front Overview: panel. Pull the below side of One screw Panel the panel and release the fixing the cover...
  • Page 60 Electrical How to remove the Room temp. parts electrical parts. sensor Grounding screws 1) After remove the front panel from Swing motor procedure 1, pull out the room temp. sensor and evaporator coil sensor. Remove the grounding screws. 2) Pull out the clip toward the left side and open the cover.
  • Page 61 Evaporator remove evaporator. 1) After remove the front panel ass’ y and electrical parts following procedure 1 and procedure 2, remove the pipe holder at the rear side of the unit. 2) Remove the two screws on the evaporator at the base bearing side. 3) Remove two screws on the evaporator at the fixed plates and then lift...
  • Page 62 Fan and How to remove the fan motor and motor. 1) After remove the evaporator ass’y following procedure 1, procedure 2 and procedure 3, remove the three screws fixing the cover 2) Remove the screw fixing the motor and then pull out the motor.

  • Page 63: Outdoor Unit

    10.2 Outdoor unit CH-09DKT230VO, CH-12DKT230VO Part name Procedures Remarks Panel plate How to remove the panel plate. Screws of top panel (3 screws, 1 screw is under the big handler) 1) Stop operation of the air conditioner and 3 screws turn “OFF”...
  • Page 64 Fan ass’y ○ How to remove the fan ass’y. 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove ○ the fan. 2) Unfix the hooks and compressor T3,T4,T5 sensor then open the electronic control box cover.
  • Page 65 3) Disconnect the ○ connector for fan motor from the electronic control board. ○ 4) Remove the four fixing screws of the fan motor. Then remove the fan motor. Electrical How to remove the ○ parts electrical parts. 1) After finish work of item 1 and item 2, remove the connectors for the compressor.
  • Page 66 ○ 3) Pull out connectors of the condenser coil temp. sensor (T3), outdoor ambient temp. sensor (T4) and discharge temp. sensor(TP). 4) disconnect the ○ electronic expansion valve wire 5) Remove the ○ ○ grounding screw. 6) Remove the Wires (1,2,3). Then remove the electronic control box.
  • Page 67 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. ○ ○ 1) Perform work of item1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 68 CH-18DKT230VO Part name Procedures Remarks Panel plate How to remove the panel plate. 1) Stop operation of 3 screws of top panel the air conditioner and turn “OFF” the power 3 screws of breaker. big handle 2) Remove the top panel (3 screws).
  • Page 69 Fan ass’y How to remove the fan ass’y. ○ 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove the fan. ○ 2) After remove the top cover . Unfix the hooks and then open the electronic control box cover.
  • Page 70 3) Disconnect the ○ connector for fan motor from the electronic control board. ○ 4) Remove the four fixing screws of the fan motor. Then remove the fan motor. Electrical How to remove the ○ parts electrical parts. 1) After finish work of item 1 and item 2, remove the connectors for the compressor and reactor.
  • Page 71 ○ 2) Pull out the two blue ○ wires connected with the four way valve. ○ ○ 3) Pull out connectors of the condenser coil temp. sensor (T3), outdoor ambient temp. sensor (T4) and discharge temp. sensor (TP). ○ 4) Disconnect the electronic expansion valve wire...
  • Page 72 ○ 5) Remove the electric heaters. 6) Remove the grounding screw. 7) Remove the Wires (1,2,3 or L1,L2,S).Then remove the electronic control box. ⑥ ○...
  • Page 73 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Perform work of ④ ○ item 1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 74 CH-24DKT230VO Part name Procedures Remarks Panel plate How to remove the panel 4 screws of big handle plate. Screws of top panel (3screws, 1screws is under the big handle) 1) Stop operation of the air conditioner and turn “OFF” the power breaker. 2) Remove the big handle Screws of front panel (11 screws) first, then remove the top...
  • Page 75 Fan ass’y How to remove the fan ass’y. Electronic control box 1) After remove the panel plate following procedure 1 2) Remove the nut fixing the fan, and remove the fan. compressor ○ 3) Unfix the hooks and remove the screws, then open the electronic control ○...
  • Page 76 Compressor T3,T4,T5,sensor Pressure switch wire ○ Motor wire Electronic expansion 4 way valve 4) Disconnect the ○ connector for fan motor from the electronic control board. 5) Remove the four fixing screws of the fan motor, ○ then remove the motor.
  • Page 77 Electrical How to remove the ○ parts electrical parts. 1) After finish work of item 1 and item 2, remove the connector for the compressor ○ 2) Pull out the two blue wires connected with the four way valve. 3) Pull out connectors of ○...
  • Page 78 4) Disconnect the pressure ○ switch connector. 5) Disconnect the ○ electronic expansion valve wire from the control board ○ ○ 6) Remove the ground wires . 7) Remove the wires (1,2,3 or L1,L2,S). Then remove the electronic control box.
  • Page 79 Four-way How to remove the valve The picture of four-way valve may be different from four-way valve. the one on your side. 1) Perform work of item 1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.

This manual is also suitable for:

Ch-09dkt230voCh-12dkt230viCh-12dkt230voCh-18dkt230viCh-18dkt230voCh-24dkt230vi ... Show all

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