Service Manual
Table Of Contents
- SERVICE MANUAL
- 1. GENERAL INFORMATION
- 2. TECHNICAL DATA AND PARTS LIST
- 3. TROUBLESHOOTING
- 1. Error code
- 2. Troubleshooting with error code
- 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit)
- 2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit)
- 2-3. E: 12. Wired remote controller communication error (Indoor unit)
- 2-4. E: 18. External communication error (Indoor unit)
- 2-5. E: 32. Indoor unit main PCB error (Indoor unit)
- 2-6. E: 35. MANUAL AUTO button error (Indoor unit)
- 2-7. E: 41. Room temperature sensor error (Indoor unit)
- 2-8. E: 42. Indoor unit heat exchanger sensor error (Indoor unit)
- 2-9. E: 51. Indoor unit fan motor error (Indoor unit)
- 2-10. E: 58. Intake grille error (Indoor unit)
- 2-11. E: 62. Outdoor unit main PCB error (Outdoor unit)
- 2-12. E: 63. Inverter error (Outdoor unit)
- 2-13. E: 64. PFC circuit error (Outdoor unit)
- 2-14. E: 71. Discharge thermistor error (Outdoor unit)
- 2-15. E: 73. Outdoor unit heat exchanger thermistor error (Outdoor unit)
- 2-16. E: 74. Outdoor temperature thermistor error (Outdoor unit)
- 2-17. E: 84. Current sensor error (Outdoor unit)
- 2-18. E: 94. Trip detection (Outdoor unit)
- 2-19. E: 95. Compressor motor control error (Outdoor unit)
- 2-20. E: 97. Outdoor unit fan motor error (Outdoor unit)
- 2-21. E: 99. 4-way valve error (Outdoor unit)
- 2-22. E: A1. Discharge temperature error (Outdoor unit)
- 3. Troubleshooting without error code
- 4. Troubleshooting with error code (For wireless LAN adapter)
- 4-1. E: 18. External communication error between indoor unit and WLAN adapter
- 4-2. Wireless LAN adapter error
- 4-3. Network communication error between wireless LAN router and WLAN adapter
- 4-4. E: 18. Communication error
- 4-5. E: 18. Wireless LAN adapter non-energized
- 4-6. Wireless LAN adapter Sleep mode (Indoor unit)
- 4-7. Mobile app setting method
- 5. Service parts information
- 6. Thermistor resistance values
- 4. CONTROL AND FUNCTIONS
- 1. Compressor frequency control
- 2. Auto changeover operation
- 3. Fan control
- 4. Louver control
- 5. Timer operation control
- 6. Defrost operation control
- 7. Various control
- 7-1. Auto restart
- 7-2. MANUAL AUTO operation
- 7-3. Forced cooling operation
- 7-4. 10 °C HEAT operation
- 7-5. ECONOMY operation
- 7-6. POWERFUL operation
- 7-7. Compressor preheating
- 7-8. Electronic expansion valve control
- 7-9. Prevention to restart for 3 minutes (3 minutes st)
- 7-10. 4-way valve control
- 7-11. Outdoor unit low noise operation
- 8. Various protections
- 5. FILED WORKING
¢ Heat exchanger temperature thermistor
Temperature °F (°C) Resistance (kΩ) Voltage (V)
-22.0 (-30.0) 95.58 0.24
-12.0 (-25.0) 68.90 0.32
-4.0 (-20.0) 50.31 0.43
5.0 (-15.0) 37.19 0.57
14.0 (-10.0) 27.81 0.73
23.0 (-5.0) 21.02 0.92
32.0 (0.0) 16.05 1.14
41.0 (5.0) 12.38 1.39
50.0 (10.0) 9.63 1.65
59.0 (15.0) 7.56 1.93
68.0 (20.0) 5.98 2.21
77.0 (25.0) 4.77 2.49
86.0 (30.0) 3.84 2.77
95.0 (35.0) 3.11 3.02
104.0 (40.0) 2.53 3.26
113.0 (45.0) 2.08 3.48
122.0 (50.0) 1.71 3.68
131.0 (55.0) 1.42 3.85
140.0 (60.0) 1.19 4.00
149.0 (65.0) 1.00 4.13
158.0 (70.0) 0.84 4.25
167.0 (75.0) 0.71 4.35
176.0 (80.0) 0.61 4.43
¢ Outdoor temperature thermistor
Temperature °F (°C) Resistance (kΩ) Voltage (V)
-22.0 (-30.0) 224.33 0.73
-12.0 (-25.0) 159.71 0.97
-4.0 (-20.0) 115.24 1.25
5.0 (-15.0) 84.21 1.56
14.0 (-10.0) 62.28 1.90
23.0 (-5.0) 46.58 2.26
32.0 (0.0) 35.21 2.61
41.0 (5.0) 26.88 2.94
50.0 (10.0) 20.72 3.25
59.0 (15.0) 16.12 3.52
68.0 (20.0) 12.64 3.76
77.0 (25.0) 10.00 3.97
86.0 (30.0) 7.97 4.14
95.0 (35.0) 6.40 4.28
104.0 (40.0) 5.18 4.41
113.0 (45.0) 4.21 4.51
122.0 (50.0) 3.45 4.59
131.0 (55.0) 2.85 4.65
6-2. Outdoor unit - (03-73) - 6. Thermistor resistance values
TROUBLESHOOTING
TROUBLESHOOTING