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Maintenance
4.8
Error codes displayed on the indoor unit display
Error code
dF
Defrost
SC
Self clean
FP
Heating in room temperature under 8°C
EH 00 /
Indoor unit EEPROM parameter error
EH 0A
EL 01
Indoor/outdoor unit communication error
EH 03
The indoor fan speed is operating outside of the normal range
EC 50
Outdoor temperature sensor is in open circuit or has short circuited
EC 51
Outdoor unit EEPROM parameter error
EC 52
Condenser coil temperature sensor T3 is in open circuit or has short circuited
EC 53
Outdoor room temperature sensor T4 is in open circuit or has short circuited
EC 54
Compressor discharge temperature sensor TP is in open circuit or has short circuited
EC 55
IGBT temperature sensor TH is in open circuit or has short circuited
Evaporator coil outlet temperature sensor T2B is in open circuit or has short circuited(for free-
EC 56
match outdoor units)
Open circuit or short circuit of outdoor temperature sensor or outdoor unit EEPROM parameter
EC 05
error
EH 60
Indoor room temperature sensor T1 is in open circuit or has short circuited
EH 61
Evaporator coil middle temperature sensor T2 is in open circuit or has short circuited
EC 07
The outdoor fan speed is operating outside of the normal range
EH 0b
Indoor PCB/Display board communication error
EL 0C
Refrigerant leakage detection
PC 00
IPM malfunction or IGBT over-strong current protection
PC 01
Over voltage or over low voltage protection
PC 02
Top temperature protection of compressor
PC 04
Inverter compressor drive error
PC 0F
PFC module protection
PC 40
Communication error between outdoor main chip and compressor driven chip
PC 03
High pressure protection or low pressure protection
EC 0d
Outdoor unit malfunction
FL 09
Indoor and outdoor mismatch malfunction
NOTA:
To case of an alarm, the operation light (flashes)
Cause
27
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