Indoor Unit Diagnostic Guide - Carrier DHMSHAQ09XA1 Service Manual

INDOOR UNIT DIAGNOSTIC GUIDE

OPERATION LAMP TIMER LAMP
H
1 time
H
2 times
H
3 times
H
4 times
H
5 times
H
6 times
H
7 times
H
1 time
H
2 times
H
3 times
H
4 times
H
5 times
H
6 times
H
1 time
H
2 times
H
3 times
H
5 times
Table 10—Indoor Unit Error Display
DISPLAY
X E0 Indoor unit EEPROM parameter error
X E1 Indoor / outdoor units communication error
X E2 Zero-crossing signal detection error
X E3 Indoor fan speed has been out of control
X E4 Indoor room temperature sensor T1 open circuit or short circuit
X E5 Evaporator coil temperature sensor T2 open circuit or short circuit
X EC Refrigerant leakage detection
O F0 Overload current protection
O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit
O F2 Condenser coil temperature sensor T3 open circuit or short circuit
O F3 Compressor discharge temperature sensor T5 open circuit or short circuit
O F4 Outdoor unit EEPROM parameter error
O F5 Outdoor fan speed has been out of control
H
P0 IPM malfunction or IGBT over-strong current protection
H
P1 Over voltage or over low voltage protection
High temperature protection of compressor top diagnosis and solution (only for
H
P2
9k,12k models)
H
P4 Inverter compressor drive error
O(light)
LED STATUS
H
X(off) (flash)
16