19
Troubleshooting
Table 9. Indoor Unit Error and Status
Code Display
Display
Type
Information
dF
Status
Defrost
CL
Status
Filter cleaning reminder(power on display for
15 seconds).
CL
Status
Active clean
F
Status
Filter replacement reminder(power on display
for 15 seconds).
FP
Status
Heating in room temperature under 8°C.
FC
Status
Forced cooling.
CP
Status
Remote switched off.
EC 07
Error
The outdoor fan speed is operating outside of
the normal range.
EC 51
Error
Outdoor unit EEPROM parameter error.
EC 52
Error
Condenser coil temperature sensor T3 is in
open circuit or has short circuited.
EC 53
Error
Outdoor ambient temperature sensor T4 is in
open circuit or has short circuited.
EC 54
Error
Compressor discharge temperature sensor
TP is in open circuit or has short circuited.
EC 56
Error
Evaporator coil outlet temperature sensor
(T2B multi-zone) is in open circuit or has
short circuited (for free-match indoor units).
EH 00
EH 0A
Error
Indoor unit EEPROM parameter error.
EH 03
Error
The indoor fan speed is operating outside of
the normal range.
EH 0
6
Error
Communication error between main control
board and display board.
EH 60
Error
Indoor room temperature sensor T1 is in open
circuit or has short circuited.
EH 61
Error
Evaporator coil middle temperature sensor T2
is in open circuit or has short circuited.
EL 0C
Error
Refrigerant leakage detection.
PC 00
Error
Inverter module IPM error.
PC 01
Error
High or Low voltage protection.
PC 02
Error
High temperature sensed at compressor top.
PC 03
Error
Low or High pressure protection.
PC 04
Error
Inverter compressor drive error.
PC 08
Error
Current overload protection.
Table 9. Indoor Unit Error and Status
Code Display
Display
Type
Information
PC 0L
Error
Outdoor low ambient temperature protection.
--
Error
Indoor units mode conflict (match with multi
outdoor unit).
Table 10. 3PC Single Zone Outdoor Unit Error
Codes
Display
Malfunction and Protection Indication
EL01
Communication malfunction between indoor and
outdoor units.
FL14
Capability mismatch between indoor unit and outdoor
unit
EC50
Outdoor temperature sensor error.
EC51
Outdoor EEPROM error.
EC52
Condenser coil temperature sensor (T3) malfunction.
EC53
Outdoor ambient temperature sensor (T4 ) malfunction.
EC54
Compressor discharge temperature sensor TP is in
open circuit or has short circuited
EC55
Outdoor IPM module temperature sensor malfunction
EC56
Outdoor T2B sensor error.
EC57
Refrigerant pipe temperature sensor error.
EC07
Outdoor DC fan motor malfunction/fan speed out of
control.
EC71
Over current failure of outdoor DC fan motor.
EC72
Lack phase failure of outdoor DC fan motor.
PC00
Inverter module (IPM) protection.
PC02
Top temperature protection of compressor.
PC06
Discharge temperature protection of compressor.
PC08
Outdoor over-current protection.
PC0A
High temperature protection of condenser.
PC0F
PFC module protection.
PC0L
Low temperature protection of outdoor unit.
