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Remote control display
Alarm contents
E26
The number of responding outdoor units does not match with the setting on the main outdoor unit.
E27
Improper wiring between main and sub outdoor units.
E29
No response from main outdoor unit.
E30
The outdoor unit is having error in sending serial communication signal on main-sub communication line.
E31
Error in communication inside outdoor unit control box.
F04
Compressor 1 discharge temperature sensor has failure. (DISCH1)
F05
Compressor 2 discharge temperature sensor has failure. (DISCH2)
F06
Outdoor unit heat exchanger 1 gas temperature sensor has failure. (EXG1)
F07
Outdoor unit heat exchanger 1 liquid temperature sensor has failure. (EXL1)
F08
Outdoor temperature sensor has failure. (TO)
F12
Compressor inlet temperature sensor has failure. (SCT)
F14
Subcooling heat exchanger temperature sensor has failure. (SCG)
F16
High pressure sensor has failure. (HPS)
F17
Low pressure sensor has failure. (LPS)
F23
Outdoor unit heat exchanger 2 gas temperature sensor has failure. (EXG2)
F24
Outdoor unit heat exchanger 2 liquid temperature sensor has failure. (EXL2)
F31
EEPROM on outdoor unit PCB has failure.
H01
Compressor 1 primary current is overcurrent.
H03
Compressor 1 current sensor is disconnected or shorted.
H05
Compressor 1 discharge temperature sensor is disconnected, shorted or misplaced. (DISCH1)
H06
Low pressure sensor value is too low.
H07
Compressor or refrigerant circuit has low oil.
H08
Compressor 1 oil temperature sensor has failure. (OIL1)
H11
Compressor 2 primary current is overcurrent.
H13
Compressor 2 current sensor is disconnected or shorted.
H15
Compressor 2 discharge temperature sensor is disconnected, shorted or misplaced. (DISCH2)
H21
Compressor 2 HIC has failure. HIC is overcurrent or overheat. VDC is undervoltage or overvoltage.
H27
Compressor 2 oil temperature sensor has failure. (OIL2)
H31
Compressor 1 HIC has failure. HIC is overcurrent or overheat. VDC is undervoltage or overvoltage.
L04
Duplicate system address setting on outdoor units.
L05
Two or more indoor units are set as priority indoor unit (priority indoor unit).
L06
Two or more indoor units are set as priority indoor unit (non-priority indoor unit).
L10
Capacity setting of outdoor unit is not correct.
L17
Model mismatch between outdoor units.
P03
Compressor 1 discharge temperature is too high.
P04
High pressure switch is activated.
P05
Compressor 1 AC power supply has abnormal.
P14
O
2
sensor has activated.
P15
Compressor 2 AC power supply has abnormal.
P16
Compressor 1 secondary current is overcurrent.
P17
Compressor 2 discharge temperature is too high.
P19
Compressor 2 start failure. Compressor 2 is missing phase.
P22
Outdoor unit fan motor has failure.
P26
Compressor 2 secondary current is overcurrent.
P29
Compressor 1 start failure. Compressor 1 is missing phase.
P31
Other indoor unit in group control has an alarm.
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