INNOVAIR DC INVERTER NEXXOS
SERVICE MANUAL
w w w . i n n o v a i r . c o m
Contents
1.
Safety Caution .....................................................................................................71
2.
General Troubleshooting ....................................................................................72
3.
Error Diagnosis and Troubleshooting Without Error Code ...............................74
3.1
Remote maintenance ...................................................................................74
3.2
Field maintenance .......................................................................................75
4.
Quick Maintenance by Error Code ......................................................................80
5.
Troubleshooting by Error Code ...........................................................................81
5.1
Common Check Procedures.........................................................................81
5.2
E0/F4 (EEPROM parameter error) .................................................................83
5.3
E1 (Indoor and outdoor unit communication error) ......................................84
5.4
E2 (Zero crossing detection error diagnosis and solution) ............................86
5.5
E3/F5 (Fan speed has been out of control diagnosis and solution) ................87
5.6
E4/E5/F1/F2/F3 (Open circuit or short circuit of temperature sensor diagnosis
and solution) ...............................................................................................90
5.7
EC (Refrigerant Leakage Detection diagnosis and solution) ..........................91
5.8
F0(Overload current protection diagnosis and solution) ................................92
5.9
P0(IPM malfunction or IGBT over-strong current protection diagnosis and
solution) .....................................................................................................93
Troubleshooting
62