Lennox GCM07N Service Manual
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Lennox GCM07N Service Manual

Lennox GCM07N Service Manual

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HVAC EUROPE
SPLIT TYPE, HEAT PUMP AIR CONDITIONERS
Technical & service manual 2005
R410a Wall Mounted
[Models]
GCM07N niet leverbaar
GHM07N niet leverbaar
GCM09N
GHM09N
GCM12N
GHM12N
GCM18N
GHM18N

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Summary of Contents for Lennox GCM07N

  • Page 1 HVAC EUROPE SPLIT TYPE, HEAT PUMP AIR CONDITIONERS Technical & service manual 2005 R410a Wall Mounted [Models] GCM07N niet leverbaar GHM07N niet leverbaar GCM09N GHM09N GCM12N GHM12N GCM18N GHM18N...

  • Page 2: Table Of Contents

    GC(H)M Series (R410A) Contents 1. Features………………………………………………………………… 02 2. Specification………………………………………………………..……03 3. Dimensions…………………………………………………………..… 05 4. Refrigeration cycle diagram……………………………………………09 5. Pressure table…………….……………………………………….……10 6. Capacity table…………………………………………………………...14 7. Wiring diagram…………………………………………………..………20 8. Electronic function………………………………………….…………...25 9. Troubleshooting……………………………………………………….…33 10. Characteristic of temp. sensor…………………………………………36...

  • Page 3: Features

    1.Features 1.1 Compact design 1.2 High efficiency and quiet operation 1.3 A class energy level...

  • Page 4: Specification

    2.Specification Model GCM-07N GHM-07N GCM-09N GHM-09N Power supply Ph-V-Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz Capacity Btu/h 7000 7000 9000 9000 Input Cooling Rated current Btu/w.h, w/w 11,3.2 11,3.2 11,3.2 11,3.2 Capacity Btu/h 8500 11000 Input Heating...
  • Page 5 Model GCM-12N GHM-12N GCM-18N GHM-18N Power supply Ph-V-Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-240V~,50Hz 1, 220-240V~,50Hz Capacity Btu/h 12000 12000 18000 18000 Input 1120 1120 1720 1720 Cooling Rated current Btu/w.h, w/w 11,3.2 11,3.2 10.5,3.1 10.5,3.1 Capacity 15000 19000 Input 1180...

  • Page 6: Dimensions

    3.Dimensions 3.1 Indoor unit GCM-07N,GHM07N,GCM09N,GHM09N 3.2 Indoor unit GCM-12N, GHM12N...
  • Page 7 3.2 Indoor unit GCM-18N,GHM18N...
  • Page 8 3.4 Outdoor unit GCM-07N,GHM07N 3.5 Outdoor unit GCM-09N1,GHM09N,GCM12N,GHM12N...
  • Page 9 GCM-18N,GHM18N...

  • Page 10: Refrigeration Cycle Diagram

    4.Refrigeration cycle diagram...

  • Page 11: Pressure Table

    5. Pressure table Note: *The pressure data is from 3 way valve, the pressure data are pressure above atmosphere. *D: Dry bulb temp. *W: Wet bulb temp. 5.1GCM07N Cooling mode Outdoor temperature (Dry bulb temp) Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Indoor Conditions...
  • Page 12 5.3GCM09N Cooling mode Outdoor temperature (Dry bulb temp) Indoor Conditions Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC 21ºC D Pressure 10.0 15ºC W ( kg/cm 24ºC D Pressure 10.1 17ºC W ( kg/cm 27ºC D Pressure 10.2 10.8 19ºC W ( kg/cm 32ºC D Pressure...
  • Page 13 5.5GCM12N Outdoor temperature (Dry bulb temp) Cooling mode Indoor Conditions Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC 21ºC D Pressure 15ºC W ( kg/cm 24ºC D Pressure 10.0 10.4 17ºC W ( kg/cm 27ºC D Pressure 10.3 10.9 19ºC W ( kg/cm 32ºC D Pressure...
  • Page 14 5.7GCM18N Cooling mode Outdoor temperature (Dry bulb temp) Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Indoor Conditions 21ºC D Pressure 15ºC W ( kg/cm 24ºC D Pressure 10.0 10.5 17ºC W ( kg/cm 27ºC D Pressure 10.4 10.9 19ºC W ( kg/cm 32ºC D Pressure...

  • Page 15: Capacity Table

    6. Capacity table 6.1GCM07N SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 2.04 1.94 1.61 1.53 1.41 21ºC D Sensitive capacity kW 1.52 1.41 1.39 1.32 1.19 1.07 15ºC W Input kW. 0.53 0.58 0.67 0.73...
  • Page 16 WINTER OUTDOOR CONDITIONS 12ºC D 7ºC D 4ºC D 0ºC D -4ºC D -7ºC D Indoor Conditions 11ºC W 6ºC W 3ºC W -1ºC W -6ºC W -8ºC W Capacity kW 3.01 2.73 2.47 1.76 1.65 1.58 15ºC Input kW. 0.76 0.66 0.58...
  • Page 17 6.4GHM09N SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 2.42 2.41 2.24 2.03 1.87 1.75 21ºC D Sensitive capacity kW 1.72 1.69 1.65 1.53 1.43 1.36 15ºC W Input kW. 0.72 0.75 0.84 0.89 0.97 Total capacity kW...
  • Page 18 6.5GCM12N SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 3.276 3.187 3.105 2.821 2.746 2.621 21ºC D Sensitive capacity kW 2.567 2.457 2.413 2.287 2.21 2.087 15ºC W Input kW. 0.89 1.01 1.082 1.188 1.243 1.337...
  • Page 19 WINTER OUTDOOR CONDITIONS 12ºC D 7ºC D 4ºC D 0ºC D -4ºC D -7ºC D Indoor 11ºC W 6ºC W 3ºC W -1ºC W -6ºC W -8ºC W Conditions Capacity kW 4.446 4.264 4.132 3.838 3.335 3.305 15ºC Input kW. 1.141 1.106 1.059...
  • Page 20 6.8GHM18N SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 4.914 4.781 4.658 4.232 4.119 3.932 21ºC D Sensitive capacity kW 3.851 3.686 3.620 3.431 3.315 3.131 15ºC W Input kW. 1.335 1.515 1.623 1.782 1.865 2.006...
  • Page 21 7. Schematic diagram and wiring diagram 7.1 Schematic diagram IN4007*4 7812 +12V-a 7805 Vout Vout 1.JR1=2K R19 150 REC1 IN4148 +12V R215.1K FANSP_FEEDBACK TRANS 2200uF/25V 1000uF/16V 470uF/16V RECEIVER_V FAN_BACK 4.JR6 IC10 7812 +12V-b IN4007*4 10uF/16V Vout IC2 24C04 IC4 UPD789166 VSS0 CN16 2200uF/25V...

  • Page 22: Wiring Diagram

    7.2 Wiring diagram 7.2.1 Cooling only 7.2.1.1GCM07N, GCM09N GCM12N I NDO O R UNI T OUTDO O R UNI T 1 2 (N ) Y&G BLACK BLACK BLACK M O TO R BLUE BLUE Y&G CO M PRESSO R CAPACI TO R...
  • Page 23 7.2.1.2GCM18N I NDOO R UNI T O UTDOO R UNI T Y&G BLACK BLACK O VERLO AD BLACK RELAY CO M PRESSO R M O TO R BLUE W HI TE BLUE Y/ G CO M PRESSO R CAPACI TOR CAPACI TO R...
  • Page 24 7.2.2 Heating/cooling 7.2.2.1 GHM07N, GHM09N GHM12N I NDO OR UNI T O UTD OO R UNI T...
  • Page 25 7.2.2.2GHM18N I NDO O R UNI T O UTDO O R UNI T BLUE Y&G BLUE 4- W AY BLACK O VERLO AD RELAY BLACK BLACK CO M PRESSO R BLUE M O TO R Y/ G W HI TE BLUE CO M PRESSO R CAPACI TO R...

  • Page 26: Electronic Function

    8 Electronic function Electric Control working environment 8.1.1 input voltage: 175~253V 8.1.2 Input power frequency:50Hz 8.1.3 Ambient temperature: -7°C~+43°C 8.1.4 Indoor fan normal working amp is less than 1A, 8.1.5 Outdoor fan. Normal working amp is less than 1.5A 8.1.6 Four-way valve normal working amp is less than 1A.
  • Page 27 Protection 8.4.1 3 minutes delay at restart for compressor. 8.4.2 Sensor protection at open circuit and breaking disconnection 8.4.3 Fan Speed is out of control. When Indoor Fan Speed is too high(higher than High Fan+300RPM)or too low(lower than 400RPM), the unit stops and LED displays failure information and can’t returns to normal operation automatically.
  • Page 28 Anti-freezing control to indoor evaporator at cooling mode( T: evaporator temp. ) Condition Compressor Outdoor fan Temp. Time Evaporator T> TE6 Temp. up T< TE6 >5 Minutes Evaporator T> TE5 Temp. down T< TE5 >5 Minutes Dehumidifying mode 8.7.1 The 4-way valve is off in dehumidifying mode 8.7.2 Compressor and Indoor Fan actions in dehumidifying mode Conditions...
  • Page 29 8.7.3 Low room temperature protection: When room temperature decreases to below 10 , compressor and outdoor fan will stop(indoor fan ℃ is Breeze). Dehumidifying operation will be resumed when room temperature restores to over 13 ℃ 8.7.4 At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the same as that of cooling mode.
  • Page 30 T<0 High...
  • Page 31 8.8.6 Indoor evaporator high-temperature protection at heating mode Condition Compressor Outdoor fan T= Indoor exchanger temp. Indoor exchanger temp. up T<TE8 TE8<T<TE7 T>TE7 Indoor exchanger temp. down T>TE9 T<TE9 8.8.7. The louver opens to Standard Angle ANGLHEAT when power is on for the first time Defrosting operation (Available for heating only).
  • Page 32 A. The defrost time has reached to 7.5 or 10 minutes. B. The compressor current has reached to I or above, I differs in different models. DEFROST DEROST...
  • Page 33 8.9.4 Defrosting Actions: Defrost 10or 6minutes Compressor 4-way Valve Outdoor Fan Indoor Fan 8.10 Automatic operation mode 8.10.1 The air conditioner automatically selects one of the following operation modes: cooling, heating or fan only according to the temp. difference between room temp. (TA) and set temp. (TS). TA—TS Operation mode TA—TS>2...
  • Page 34 8.14.2 Cooling: The set temperature rise 1 per hour. Two hours later, the set temperature will maintain as a ℃ constant and the fan speed is kept at low speed. The total time is 7 hours, after 7 hours the unit stops. 8.14.3 Heating: The set temperature decrease 1...
  • Page 35 8.18 Models and Parameters Model GCM-07N GHM-07N GCM-09N GHM-09N GCM-12N GHM-12N I3SEC 7.5A 7.5A 10.0A 10.0A 12.0A 12.0A I5MIN 6.2A 6.2A 7.5A 7.5A 8.5A 8.5A IFAN 5.2A 5.2A 5.5A 5.5A 7.5A 7.5A IRESTORE 4.2A 4.2A 4.5A 4.5A 6.5A 6.5A IDEFROST 3.2A 3.5A 5.0A...

  • Page 36: Troubleshooting

    9.Troubleshooting 9.1 Display board Signal receptor AU TO indicator Thi s indicator illuminates whe n the air conditioner i s in AUTO operation. DE FROST indicator (F or Cooling & H eating mo dels only) Thi s indicator illuminates whe n the air conditioner starts defrostin g automati cally or when the warm air control fea ture is activated in he ating oper ation.
  • Page 37 9.3 Diagnostic Chart 9.3.1 After energizing, no indicator is lighted and the air conditioner can’t be operated. After energizing, the air conditioner can’t be operated Check if AC220V power supply outputs to Indoor PCB. Check if AC220V exists at the primary coil of transformer. Indoor PCB is defective Check if AC14.5V exists at the secondary coil of transformer.
  • Page 38 9.3.3 Failure phenomenon Failure phenomenon Operation lamp Timer lamp Indoor fan speed has been out of control for over 1 minute ☆ Indoor room temp. or evaporator sensor is open circuit or short circuit ☆ Over current protection of the compressor occurs 4 times ☆...

  • Page 39: Characteristic Of Temp. Sensor

    10. Characteristic of temp. sensor Temp. Resistance K Temp. Resistance K Temp. Resistance K 62.2756 14.6181 4.3874 58.7079 13.918 4.2126 56.3694 13.2631 4.0459 52.2438 12.6431 3.8867 49.3161 12.0561 3.7348 46.5725 11.5 3.5896 10.9731 3.451 41.5878 10.4736 3.3185 39.8239 3.1918 37.1988 9.5507 3.0707 35.2024...

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