Fisher FSPI-180AE1 Service Manual page 47

2.3 Outdoor unit malfunction
Display
E0
E2
E3
E4
E5
P0
P3
P4
P5
P6
P7
In low ambient cooling mode, the LED displays"LC" or alternative displays between running frequency
and "LC"(each displays 0.5s)
Electrical Control System
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
Top temperature protection of compressor
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
Troubleshooting
47