R3250Hz Universal Outdoor Series Technical Manual
131
GD Chigo Heating & Ventilation Equipment Co., Ltd.
9 Troubleshooting
9.1 Single phase unit
Error code display
Error
code
Description
Error
code
Description
E01
Communication fault between
IDU and ODU
P0C
Current protection
E02
Zero cross detection fault of IDU
P1x
Bus voltage protection
E03
stall fault of indoor fan
P21
Low temperature dehumidication
fault
E04
T2B (indoor coil outlet temp.)
sensor fault
P22
High and low temp. protection of
evaporator
E08
Mode conflict
P23
High temp. protection of condenser
E09
ODU EEPROM error
P24
High and low temp. protection of
environment
E0E
IDU EEPROM error
P25
High discharge temperature of
compressor
E11
IDU T1 (room temperature) sensor
fault
P28
Abnormal discharge in commodity
inspection mode
(compressor reversal)
E12
IDU T2 (indoor coil middle temp.)
sensor fault
P29
T3 abnormal in commodity
inspection heating mode
(System exception, 4-way valve
disconnected)
E13
ODU T3 (outdoor coil outlet
temp.) sensor fault
P30
High pressure protection
E14
ODU T4 (ambient temp.) sensor
fault
P31
Low pressure protection
E15
ODU discharge temp. sensor fault
H1x
Compressor fault
E16
Module temp. sensor fault
H3x
PFC fault
E17
Suction temp. sensor fault
L01
Lower frequency because of voltage
limit
E18
TZA sensor fault
L02
Lower frequency because of high or
low temp. limit of evaporator
E19
TZB sensor fault
L03
Lower frequency because of high
temp. limit of condenser
E2x
Fan motor fault
L05
Lower frequency because of high
discharge temp. of compressor
L06
Lower frequency because of module
temperature limit
L0C
Lower frequency because of current
limit
