Cooper & Hunter CH-09DKT230VI Service Manual Download Page 24 | Manualshive

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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.100

Ω 40W) or soldering iron (plug) b, -

terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.

Note: The picture above is only for reference. The plug of your side may be different.

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Summary of Contents for CH-09DKT230VI

Page 1: ...24DKT230VO dakota HYPER MINI Split Air Conditioner WITH HEAT PUMP SERVICE MANUAL Table of Contents 1 Precaution 2 Part Names And Functions 3 Dimension 4 Refrigerant Cycle Diagram 5 Wiring Diagram 6 In...

Page 2: ...evation 11 6 4 Installation for the first time 12 6 5 Adding the refrigerant after running the system for many years 12 6 6 Re installation while the indoor unit need to be repaired 13 6 7 Re installa...

Page 3: ...ul of the case edges and the fins on the condenser and evaporator For installation always contact the dealer or an authorized service center Do not install the product on a defective installation stan...

Page 4: ...away properly A bad connection may cause water leakage Keep level even when installing the product It can avoid vibration of water leakage Do not install the product where the noise or hot air from th...

Page 5: ...of the same type Do not mix old and new batteries or different types of batteries There is risk of fire or explosion Do not recharge or disassemble the batteries Do not dispose of batteries in a fire...

Page 6: ...ions 2 1 Model Names of Indoor Outdoor units Series Capacity Indoor units Outdoor units Inverter 9k CH 09DKT230VI CH 09DKT230VO 18k CH 18DKT230VI CH 18DKT230VO 24k CH 24DKT230VI CH 24DKT230VO 12k CH 1...

Page 7: ...mes of Indoor Outdoor units 24 in 60 cm above bovve 24in 60m on rightc 12in 30cm on left 79in 200cm in front 12in back w 30cm fromall 4 75in 12cm or more 90 55in 2 3m or more 4 75in 12cm or more 5 9in...

Page 8: ...sion 3 1 Indoor Unit W D Model W D H CH 09DKT230VI 32 9in 835mm 7 8in 198mm 11 0in 280mm CH 12DKT230VI 39 0in 990mm 8 6in 218mm 12 4in 315mm CH 18DKT230VI 46 7in 1186mm 10 2in 258mm 13 5in 343mm CH 24...

Page 9: ...5mm QGRRU XQLW RXWOLQH CH 18DKT230VI 39in 990mm 5 3 in 135mm 10 2in 260mm 0 9in 23 2mm 1 8 in 45mm 12 4in 315mm LQ PP QGRRU XQLW RXWOLQH CH 24DKT230VI 1 8in 45mm 21 5mm 0 85in LQ PP 46 7in 1186mm 10 1...

Page 10: ...13 11 333mm 21 81 554mm 34 25 870mm 20 24 514mm 13 39 340mm CH 12DKT230VO 33 27 845mm 14 29 363mm 27 64 702mm 35 98 914mm 21 26 540mm 13 78 350mm CH 18DKT230VO CH 24DKT230VO 37 24 946mm 16 14 410mm 31...

Page 11: ...HEAT EXCHANGE CONDENSER Compressor 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor T1 Room temp sensor T3 Condenser temp sensor Accumulator TP Discharge temp sensor T4 A...

Page 12: ...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 Models Standard l...

Page 13: ...Operate the vacuum pump to evacuate 6 Make evacuation for 30 minutes and check whether the compound meter indicates 14 5Psi 0 1Mpa If the meter does not indicate 14 5Psi 0 1Mpa after pumping 30 minute...

Page 14: ...as 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...

Page 15: ...the vacuum pump 2 Refrigerant charging 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 vac...

Page 16: ...If the air conditioner is used beyond the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be le...

Page 17: ...function This lamp illuminates when Clean Air feature is activated DEFROST indication lamp Lights up when the air conditioner starts defrosting automatically or when the warm air control feature is a...

Page 18: ...y and the indoor fan will open 10s later If the unit runs in heating mode the indoor fan will be also controlled by anti cold wind function 8 3 7 Compressor preheating functions Preheating permitting...

Page 19: ...nt 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 When the setting temperature is reached if the compressor sto...

Page 20: ...inimum speed or setting speed The anti cold air function is valid The indoor fan is controlled as below Setting fan speed Actual fan speed H H H H H G M M M M M M Z L L L L L L D H H H G M M M Z L L L...

Page 21: ...will turn off the machine 8 4 6 2 In forced operation mode all general protections and remote control are available 8 4 6 3 Operation rules Forced cooling mode The compressor runs at F2 frequency and...

Page 22: ...ormation Displaying code Meaning T1 T1 T1 temp T2 T2 T2 temp T3 T3 T3 temp T4 T4 T4 temp T2B Tb T2B temp TP TP TP temp TH TH TH temp Targeted Frequency FT Targeted Frequency Actual Frequency Fr Actual...

Page 23: ...139 E0 E1 E9 140 141 149 F0 F1 F9 150 151 159 Indoor fan speed Outdoor fan speed 0 OFF 1 2 3 4 Low speed Medium speed High speed Turbo For some big capacity motors 14 FF Actual fan speed Display valu...

Page 24: ...electricity power in capacitor Electrolytic Capacitors HIGH VOLTAGE CAUTION For other models please connect discharge resistance approx 100 40W or soldering iron plug between terminals of the electrol...

Page 25: ...es O F5 Outdoor fan speed has been out of control 1 times P0 IPM malfunction or IGBT over strong current protection 2 times P1 Over voltage or over low voltage protection 3 times P2 High temperature p...

Page 26: ...for compressor connect to the DR module fuse 250V 30A connect to earth power supply 208 230V AC connect to the terminal connect to 4 way valve t Hfli l 1 when 4 way is on output 208 230V AC l T 14 CN5...

Page 27: ...hen is ON 5 AC FAN CN25 connect to AC fan 6 TP T4 T3 CN21 connect to pipe temp sensor T3 ambient temp sensor T4 exhaust temp sensor TP 7 HEAT2 CN15 connect to chassis heater 100 130V AC when is ON 8 P...

Page 28: ...heater1 CN4 CN4D N L electric heater 2 connect to compressor heater when heater is ON output 208 230V AC Fuse SA 2SOV 1 i Connect to inverter driver connect to the 208 230V terminal AC 0 654321 485 co...

Page 29: ...27 IPM board TO MAIN W connecttothecompressor V OVAC standby 10 200VAC running...

Page 30: ...s Installation mistake PCB faulty Trouble shooting Yes Replace the indoor outdoor main PCB Power off then restart the unit 2 minutes later EEPROM a read only memory whose contents can be erased and re...

Page 31: ...s later Is the error extinguished No Replace the outdoor main PCB Power on Is the error extinguished Replace the outdoor main PCB Power on Is the error extinguished Check the outdoor wiring connection...

Page 32: ...voltage will move alternately between 25V to 25V If the outdoor unit has malfunction the voltage will move alternately with positive value While if the indoor unit has malfunction the voltage will be...

Page 33: ...o crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal Supposed causes Connection mistake PCB faulty Trouble shooting Check if the connections and power supply...

Page 34: ...s Wiring mistake Fan ass y faulty Fan motor faulty PCB faulty Trouble shooting Power off then restart the unit 2 minutes later Shut off the power supply Rotate the fan by hand The unit operates normal...

Page 35: ...ck GND 0V 4 White Vcc 14 17 5V 5 Yellow Vsp 0 5 6V 6 Blue FG 14 17 5V 2 Outdoor DC Fan Motor control chip is in outdoor PCB Power on and check if the fan can run normally if the fan can run normally t...

Page 36: ...ampling voltage is lower than 0 06V or higher than 4 94V the LED will display the failure Supposed causes Wiring mistake Sensor faulty PCB faulty Trouble shooting Check the connection between temperat...

Page 37: ...aulty Indoor PCB faulty System problems such as leakage or blocking Trouble shooting Is there cool air blowing out from indoor air outlet Yes Yes Check if T2 sensor is well fixed Correct the installat...

Page 38: ...Compressor malfunction Trouble shooting Check the power supply Is it normal Check the connections and wires Is it well connection Stop the unit Check the power supply No Yes No Correct the connection...

Page 39: ...n main PCB and compressor If the wires and connectors are broken Correct the connection or replace the wires and connectors Yes No IPM continuity check Check if the IPM terminal resistance values are...

Page 40: ...38 For example P U P V Note The photos below are only for reference it s may be not same totally with the ones on your side...

Page 41: ...39 P W N U...

Page 42: ...40 N V N W...

Page 43: ...rectifier No Check whether bridge rectifier is normal Check whether bridge rectifier is normal Check the wiring of reactor or inductance Check the wiring of reactor or inductance Reconnect the wiring...

Page 44: ...ses Power supply problems System leakage or block PCB faulty Trouble shooting Check the power supply Check the connections and wires Stop the unit No Yes No Correct the connections or replace the wire...

Page 45: ...splay the failure Supposed causes PCB faulty Trouble shooting Yes Tighten the screws and apply silicon grease Tighten the screws and apply silicon grease Replace the outdoor control PCB Replace the ou...

Page 46: ...or replace the wires and connectors No Check if the IPM installed correctly Correct the installation tighten the screws and apply silicon grease No IPM continuity check Check if the IPM terminal resis...

Page 47: ...ytic 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 resis...

Page 48: ...rectifier No Check whether bridge rectifier is normal Check whether bridge rectifier is normal Check the wiring of reactor or inductance Check the wiring of reactor or inductance Reconnect the wiring...

Page 49: ...outdoor main board Replace outdoor main board No Replace low pressure protector Replace low pressure protector No Whether the low pressure protector is broken Whether the low pressure protector is bro...

Page 50: ...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 t...

Page 51: ...29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1...

Page 52: ...2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7 086 119 246...

Page 53: ...57 4 39 2 33 91 4 64 147 2 95 203 126 258 8 4 5 40 1 34 93 2 65 149 96 204 8 127 260 6 5 41 35 95 66 150 8 97 206 6 128 262 4 6 42 8 36 96 8 67 152 6 98 208 4 129 264 2 7 44 6 37 98 6 68 154 4 99 210...

Page 54: ...d N 208 240V 1 phase 3 phase 380 420V 3phase 302phase 0 In standby around 310VDC around 530VDC In operation With passive PFC module With partial active PFC module With fully active PFC module 200VDC 3...

Page 55: ...tance value of each winding by using the tester Position Resistance Value ASM98D32UFZ ATM115D43UFZ2 ATM150D23UFZ ATF235D22UMT ATF250D22UMT Blue Red 2 25 68 F 20 C 1 87 68 F 20 C 1 72 68 F 20 C 0 75 68...

Page 56: ...tance value Red Black Several M Red Black Several M P N U N U V V W W Red 4 Indoor AC Fan Motor Measure the resistance value of each winding by using the tester Position Resistance Value RPG13B RPG50B...

Page 57: ...7 9 1 10 7 BAR 80 67 9 3 8 9 9 1 9 6 11 2 F C ODT IDT 75 23 89 85 29 44 95 35 105 40 56 115 46 11 PSI 70 59 119 113 117 125 147 PSI 75 63 124 120 126 132 155 PSI 80 67 135 129 132 140 162 F C ODT IDT...

Page 58: ...8 31 5 27 8 26 3 24 9 F C ODT IDT 57 53 13 89 11 67 47 43 8 33 6 11 37 33 2 78 0 56 27 23 2 78 5 17 13 8 33 10 56 PSI 55 439 413 367 330 302 PSI 65 471 435 386 368 339 PSI 75 489 457 403 381 362 F C O...

Page 59: ...panel 1 Pull the below side of the panel and release the clips Then remove the front panel 2 Remove the filter and horizontal louver 3 Remove the four fixing screws 4 Remove the cover one screw 5 Lift...

Page 60: ...d the left side and open the cover 3 Remove the fixing screw and open the electrical box cover 4 Pull out the connectors of the swing motor and fan motor 5 Remove the fixing screw and then remove the...

Page 61: ...ng 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...

Page 62: ...the fan 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...

Page 63: ...of the air conditioner and turn OFF the power breaker 3 Remove the big handle first and then remove the top panel 3 screws 3 Remove the screws of front panel 6 screws 4 Remove the screws of the right...

Page 64: ...ter remove the panel plate following procedure 1 remove the hex nut fixing the fan and then remove the fan 2 Unfix the hooks and then open the electronic control box cover 1 2 compressor T3 T4 T5 sens...

Page 65: ...Remove the four fixing screws of the fan motor Then remove the fan motor 3 Electrical parts How to remove the electrical parts 1 After finish work of item 1 and item 2 remove the connectors for the co...

Page 66: ...enser 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...

Page 67: ...ipe 1 Then the four way valve ass y can be removed The picture of four way valve may be different from the one on your side 3 4 5 Compressor How to remove the compressor 1 After perform work of item 1...

Page 68: ...l plate 1 Stop operation of the air conditioner and turn OFF the power breaker 2 Remove the top panel 3 screws 3 Remove the screws of front panel 9 screws 4 Remove the screws of the right side panel 8...

Page 69: ...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 1 2 T3 T4 T5 sensor wire Motor wire Electronic exp...

Page 70: ...electronic control board 4 Remove the four fixing screws of the fan motor Then remove the fan motor 3 Electrical parts How to remove the electrical parts 1 After finish work of item 1 and item 2 remov...

Page 71: ...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 expansio...

Page 72: ...70 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 5 7...

Page 73: ...pipe 2 Then the four way valve ass y can be removed The picture of four way valve may be different from the one on your side 3 5 Compressor How to remove the compressor 1 After perform work of item 1...

Page 74: ...ditioner and turn OFF the power breaker 2 Remove the big handle first then remove the top cover 7 screws 3 Remove the screws of front panel 11 screws 4 Remove the screws of the right side panel 13 scr...

Page 75: ...ass y 1 After remove the panel plate following procedure 1 2 Remove the nut fixing the fan and remove the fan 3 Unfix the hooks and remove the screws then open the electronic control box cover 2 3 fa...

Page 76: ...nector for fan motor from the electronic control board 5 Remove the four fixing screws of the fan motor then remove the motor 5 4 T3 T4 T5 sensor Pressure switch Compressor wire Electronic expansion 4...

Page 77: ...r 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 the condenser coil temp sensor T3 ou...

Page 78: ...ct 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 contro...

Page 79: ...pipe 5 Then the four way valve ass y can be removed The picture of four way valve may be different from the one on your side 5 Compressor How to remove the compressor 1 After perform work of item1 3...

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