Carrier 38LUVH025N-1 Service Manual Download

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LUV INVERTER SERIES

Service Manual

42/38LUVH025N-1

42/38LUVH035N-1

42/38LUVH045N-1

42/38LUVH055N-1

42/38LUVH065N-1

42/38LUVH075N-1

Summary of Contents for 38LUVH025N-1

Page 1: ...LUV INVERTER SERIES Service Manual 42 38LUVH025N 1 42 38LUVH035N 1 42 38LUVH045N 1 42 38LUVH055N 1 42 38LUVH065N 1 42 38LUVH075N 1...

Page 2: ...S PART1 Safety Precaution PART2 Outline and Dimensions PART3 Refrigerant Cycle Diagram PART4 Wiring Diagram PART5 Installation Details PART6 Operation Description PART7 Trouble Shooting PART8 Capacity...

Page 3: ...pair the product there is risk of fire or electric shock Always ground the product There is risk of fire or electric shock Install the panel and the cover of control box securely There is risk of fire...

Page 4: ...ing operation There is risk of fire or electric shock Do not touch operation the product with wet hands Do not place a heater or other appliance near the power cable There is risk of fire and electric...

Page 5: ...ct 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 Take care to ensure that nobody could step...

Page 6: ...Do not step on or put anything on the product outdoor units Always insert the filter securely Clean the filter every two weeks or more often if necessary A dirty filter reduces the efficiency of the...

Page 7: ...ART2 1 PART2 Outline and Dimensions 1 Indoor Unit Model W D H 42LUVH025N 1 790 195 265 42LUVH035N 1 920 225 292 42LUVH045N 1 920 225 292 42LUVH055N 1 42LUVH065N 1 1080 230 330 42LUVH075N 1 1250 230 32...

Page 8: ...PART2 2 2 Outdoor Unit Model L1 W1 H L2 W2 38LUVH025N 1 38LUVH035N 1 760 285 590 530 290 38LUVH045N 1 760 285 590 530 290 38LUVH055N 1 845 320 700 560 335 38LUVH065N 1 38LUVH075N 1 900 315 860 590 333...

Page 9: ...agram INDOOR OUTDOOR LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR 2 WAY VALVE 3 WAY VALVE CHECK VALVE Heating Model only CAPILIARY TUBE REVERSING VALVE Heating Mode...

Page 10: ...PART4 1 PART4 Wiring Diagram 1 Indoor Unit 42LUVH025N 1 42LUVH035N 1...

Page 11: ...PART4 2 42LUVH045N 1 42LUVH055N 1 42LUVH065N 1...

Page 12: ...PART4 3 42LUVH075N 1...

Page 13: ...PART4 4 2 Outdoor Unit 38LUVH025N 1 38LUVH035N 1 38LUVH045N 1...

Page 14: ...PART4 5 38LUVH055N 1 38LUVH065N 1 38LUVH075N 1...

Page 15: ...19 3 4 6500 663kgf cm 6700 683kgf cm 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Nominal cross secti...

Page 16: ...g m Gas Liquid 42 38LUVH025N 1 3 8 9 53 1 4 6 35 5 8 20 20 42 38LUVH035N 1 42 38LUVH045N 1 1 2 12 7 1 4 6 35 5 8 20 20 42 38LUVH055N 1 42 38LUVH065N 1 42 38LUVH075N 1 5 8 16 0 3 8 9 53 5 10 25 40 Caut...

Page 17: ...uum pump Vacuum pump adaptor Lo Hi Handle Hi Two way valve Close Manifold valve Compound meter Pressure gauge 76cmHg Handle Lo Charge hose Charge hose Outdoor unit Close Three way valve Procedure 1 Co...

Page 18: ...play in the pressure indicator is a little higher than the atmosphere pressure 7 Remove the charge hose from the Lo pressure charge hose 8 Fully open the Hi and Lo packed valve 9 Securely tighten the...

Page 19: ...nning frequency will be limited as below rules Compressor discharge temperature T5 115 for 5s compressor stops 108 T5 115 decrease the frequency to the lower level every 3 minutes 90 T5 105 keep runni...

Page 20: ...ting function will stop 2 8 Zero crossing detection error protection If AC detects time interval is not correct for continuous 240s the unit will stop and the LED will display the failure The correct...

Page 21: ...inutes the frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below 3 5 3 0 2 5 2 0 1 5 1 0 0 5 0 5 1 0 A B C D E F G H While Temperature zone A B C...

Page 22: ...ase 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 hig...

Page 23: ...to the former frequency T3 60 for 5 seconds the compressor will stop until T3 52 3 2 5 Evaporator temperature protection T2 0 the compressor will stop and restart when T2 5 0 T2 4 the compressor frequ...

Page 24: ...16 17 15 14 Fmax F4 12 11 6 5 If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temperature During the 7 minutes the f...

Page 25: ...keeps 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 F10 F Keep the current frequency G Decrease the freq...

Page 26: ...uency 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 The freque...

Page 27: ...ld wind function is disabled Indoor fan speed can be set as high medium low or auto fan and the anti cold wind function is preferential Auto fan action in heating mode 2 5 2 High Low 1 Medium 1 5 3 3...

Page 28: ...keeps lower than TCDI 4 for more than 3 minutes the machine will enter defrosting mode no matter if T2 drops more than 5 or not Condition of ending defrosting If any one of the following items is sati...

Page 29: ...PART6 11 Defrosting action or...

Page 30: ...nd the setting temperature can be changed between 17 30 In auto mode the machine will choose cooling heating or fan only mode according to T T T1 Ts T T1 Ts Running mode T 1 Cooling 1 T 1 Fan only T 1...

Page 31: ...f pressing the touch button will carry the machine to forced auto mode After this if press the button once again within 5 seconds the machine will turn into forced cooling mode In forced auto forced c...

Page 32: ...ting temperature rises 1 be lower than 30 every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed When heating the setting temperature decreases 1 be hig...

Page 33: ...e function Press it again to stop the function During the time when Ionizer is controlled by remote controller Ionizer will be turned off automatically if indoor fan stops running due to malfunctions...

Page 34: ...ontrol E5 Open or short circuit of outdoor temperature sensor or outdoor unit EEPROM parameter error E6 Open or short circuit of room or evaporator coil temperature sensor E7 Outdoor fan speed has bee...

Page 35: ...EEPROM parameter error diagnosis and solution Shut off the power supply and turn on it 5s later The problem comes out again Is the EEPROM chip plugged in indoor unit PCB well No Replace the main PCB o...

Page 36: ...ED4 red bright and LED1 yellow blinking on outdoor PCB The power supply for outdoor PCB is fail Check the wiring on outdoor PCB comparing with wiring plate Is the connection good The unit does not wor...

Page 37: ...nd check if the errors happen again Is the fan motor connector and connection good The unit does not work normally Turn off the unit rotate the cross fan Does it rotate freely No Disassemble the conne...

Page 38: ...tector normal No No Is the connection good Is refrigerant circulation volume normal Reconnect it Does the compressor operate Replace it Is the power supply good Replace the outdoor unit e box Make sur...

Page 39: ...del DA108X1C 20FZ3 Measure the resistance value of each winding by using the multi meter Model DA130S1C 20FZ Measure the resistance value of each winding by using the multi meter Position Resistance V...

Page 40: ...of each winding by using the multi meter Model DA250S2C 30MT Measure the resistance value of each winding by using the multi meter Position Resistance Value Blue Red 0 95 20 Blue Black Red Blue Positi...

Page 41: ...e value of each winding by using the multi meter Model YDK55 6G Measure the resistance value of each winding by using the multi meter Position Resistance Value Black Red 372 20 Blue Red 249 20 Yellow...

Page 42: ...ue of each winding by using the multi meter Model YDK100 6T Measure the resistance value of each winding by using the multi meter Position Resistance Value Black Red 87 20 Red Yellow 162 20 Position R...

Page 43: ...e value of each winding by using the multi meter Model RPG28D Measure the resistance value of each winding by using the multi meter Position Resistance Value Black Red 400 8 20 White Black 383 8 20 Po...

Page 44: ...4C A Measure the resistance value of each winding by using the multi meter Model YDK50 4C Position Resistance Value White Red 272 8 20 Brown Black 94 8 20 Position Resistance Value White Red 204 8 20...

Page 45: ...Te sensor Measure the resistance value of each winding by using the multi meter Some frequently used R T data for T1 T2 T3 and T4 sensor Temperature 5 10 15 20 25 30 40 50 60 Resistance Value K 26 9...

Page 46: ...PART7 13 K...

Page 47: ...2024 Sensitive capacity W 2012 1970 1895 1804 1712 1633 Input W 592 648 703 758 813 869 32 C D 23 C W Total capacity W 2895 2942 2900 2800 2669 2537 Sensitive capacity W 1907 1930 1914 1882 1859 1868...

Page 48: ...ive capacity W 2688 2631 2531 2410 2286 2182 Input W 787 860 934 1007 1080 1154 32 C D 23 C W Total capacity W 3860 3922 3867 3733 3559 3383 Sensitive capacity W 2547 2578 2557 2514 2483 2495 Input W...

Page 49: ...city W 4033 3947 3798 3615 3430 3273 Input W 1303 1425 1546 1668 1789 1911 32 C D 23 C W Total capacity W 5791 5883 5800 5600 5338 5074 Sensitive capacity W 3822 3869 3836 3772 3725 3744 Input W 1290...

Page 50: ...city W 4697 4597 4423 4211 3995 3812 Input W 1591 1739 1887 2036 2184 2333 32 C D 23 C W Total capacity W 6745 6853 6756 6522 6218 5910 Sensitive capacity W 4451 4506 4468 4393 4339 4360 Input W 1575...

Page 51: ...city W 5370 5256 5057 4814 4567 4358 Input W 1734 1896 2058 2220 2382 2544 32 C D 23 C W Total capacity W 7710 7833 7723 7455 7108 6756 Sensitive capacity W 5088 5151 5107 5022 4960 4984 Input W 1717...

Page 52: ...ity W 6714 6571 6322 6018 5710 5449 Input W 2098 2294 2490 2686 2881 3077 32 C D 23 C W Total capacity W 9640 9794 9656 9322 8887 8447 Sensitive capacity W 6362 6440 6386 6279 6201 6232 Input W 2078 2...

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