Carrier 42QFD048D8S Service Manual page 78

DC voltage protection
PC 12
Over voltage or over low voltage protection
PC 01
Top temperature protection of compressor or High temperature protection of IPM module or High
PC 02
pressure protection
Communication error between outdoor main chip and compressor driven chip
PC 40
Current Input detection protection
Pc 41
Compressor start error
PC 42
Compressor lack of phase (3 phase) protection
PC 43
No speed protection
PC 44
341PWM error
PC 45
Compressor speed malfunction
PC 46
Compressor over current protection
PC 49
Outdoor zero fire line is wrong
PC 4A
Outdoor phase sequence fault
PC 4
Lack of phase
pc 4c
Inverter compressor drive error
PC 04
Compressor discharge temperature protection
PC 06
Outdoor current protection
PC 08
Anti-cold air in heating mode
PH 09
PFC module protection
PC 0F
High pressure protection
PC 30
Low pressure protection
PC 31
Low pressure fault
PC 32
Pressure protection
PC 03
Outdoor low temperature protection
pc 0l
Evaporator coil temperature over high protection
PH 90
Evaporator coil temperature over low Protection
PH 91
Condenser high temperature protection
PC 0A
Frequency limit caused by T2
LH 00
Frequency limit caused by T3
LC 01
Frequency limit caused by TP
LC 02
Frequency limit caused by voltage
LC 05
Frequency limit caused by current
LC 03
Frequency limit caused by PFC
LC 06
Frequency limit caused by high pressure
LC 30
Frequency limit caused by low pressure
LC 31
Frequency limit caused by remote controller
LH 07
 Troubleshooting 10 