Toyotomi CCT 50HINVi Service Manual page 43

Troubleshooting
2.3 Outdoor unit malfunction
Display
E0
E2
E3
E4
E5
E6
P0
P1
P2
P3
P4
P5
P6
P7
In low ambient cooling mode, the LED displays LC
and "LC"(each displays 0.5s)
106
Outdoor EEPROM malfunction
Indoor / outdoor units communication error
Communication malfunction between IPM board and outdoor main board
Open or short circuit of T3 or T4 temperature sensor
Voltage protection of compressor
PFC module protection (For MOU-36HFN1-QRC4,MOU-36HFN1-QRC8)
Top temperature protection of compressor
High pressure protection (For 36k models)
Low pressure protection(For 36k models)
Current protection of compressor
Discharge temperature protection of compressor
High temperature protection of condenser
IPM module protection
High temperature protection of evaporator
Malfunction or Protection
or alternative displays between running frequency
Electrical Control System