Troubleshooting - Kaisai FLY INVERTER Series Service Manual

Troubleshooting

1. Safety Caution ............................................................................ 61
2. General Troubleshooting ............................................................... 62
3. Error Diagnosis and Troubleshooting Without Error Code ....................... 63
3.1 Remote maintenance ................................................................................ 63
3.2 Field maintenance ..................................................................................... 64
4. Quick Maintenance by Error Code .................................................... 65
5. Troubleshooting by Error Code ........................................................ 70
5.1 Common Check Procedures ...................................................................... 70
5.2 E0/F4 (EEPROM parameter error)..................................................................... 72
5.3 E1 (Indoor and outdoor unit communication error) ..................................... 73
5.4 E2 (Zero crossing detection error diagnosis and solution) ........................... 75
5.4 E3/F5 (Fan speed is operating outside of the normal range diagnosis and
solution) .................................................................................................... 76
5.5 E4/E5/F1/F2/F3 (Open circuit or short circuit of temperature sensor diagnosis
and solution) .............................................................................................. 78
5.6 E7 (Indoor PCB /Display board communication error) ................................. 79
5.7 EC (Refrigerant Leakage Detection diagnosis and solution) ........................ 80
5.8 F0(Overload current protection diagnosis and solution) .............................. 81
5.9 P0(IPM malfunction or IGBT over-strong current protection diagnosis and
Contents