Troubleshooting
Page 40
2. General Troubleshooting
2.1 Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, the operation lamp will flash in a corresponding series, the timer
lamp may turn on or begin flashing, and an error code will be displayed. These error codes are described in the following
table:
Display Error Information Solution
F
Defrost --
SC
Self clean --
FP
Heating in room temperature under 8°C --
EH 00/EH 0A
Indoor unit EEPROM parameter error TS21
EL 01
Indoor/outdoor unit communication error TS22
EH 03
The indoor fan speed is operating outside of the normal range TS25
EC 50
Outdoor temperature sensor is in open circuit or has short circuited TS28
EC 51
Outdoor unit EEPROM parameter error TS28
EC 52
Condenser coil temperature sensor T3 is in open circuit or has short circuited TS28
EC 53
Outdoor room temperature sensor T4 is in open circuit or has short circuited TS28
EC 54
Compressor discharge temperature sensor TP is in open circuit or has short
circuited
TS28
EC 55
IGBT temperature sensor TH is in open circuit or has short circuited TS28
EC 05
Open circuit or short circuit of outdoor temperature sensor or outdoor unit
EEPROM parameter error
TS28
EH 60
Indoor room temperature sensor T1 is in open circuit or has short circuited TS28
EH 61
Evaporator coil middle temperature sensor T2 is in open circuit or has short
circuited
TS28
EC 07
The outdoor fan speed is operating outside of the normal range TS25
EH 0
Indoor PCB/Display board communication error TS30
EL 0C
Refrigerant leakage detection TS29
PC 00
IPM malfunction or IGBT over-strong current protection TS31
PC 01
Over voltage or over low voltage protection TS32
PC 02
Top temperature protection of compressor TS35
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