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12-2 MALFUNCTION CODE LIST
• For places where the Malfunction code is lefe blank , the "�" indication is not displayed . Though the
system continues operating, be sure to inspect the system and make repairs as necessary
• Depending on the type of indoor or outdoor unit the Malfunction code may or may not be displayed.
code
AO
A1
A3
A6
U1
UF
U5
U8
UA
UC
UE
UJ
uo
U2
U4
UA
E1
E?
F3
H9
J3
J6
L4
Malfunction/ Remarks
Safety device operates.
Indoor units PC board fault
Drain water level abnormal
Indoor fan motor overloaded overcurrent or locked
Fan PCB power supply error
Humidifier faulty
Air cleaner faulty
Only the air cleaner does not function
Type set improper
apacity data is wrongly preset. r there is nothing programmed in the data IC.
Indoor PCB (Mater) - indoor PCB (Slave) Transmission defect
Sensor (R2T} for heat exchanger temperature is fault
Sensor R3T for heat exchan er temperature is fault
Fan PCB setting defect
Sensor for suction air tern erature is fault
Humidity sensor abnormal
Human detection / floor temperature sensor error
Sensor for remote controller is fault
The remote controller thermistor does not function, but the system thermo
run is possible
Reverse phase/ Reverse two phase of thel 1,L2 and L3
Wrong wiring between indoor and outdoor units or malfunction of PC board
mounted on indoor and the outdoor units
transmission Error (indoor unit- remote controller)
Malfunction in transmission between main and sub remade controls
( malfunction in sub remote controller)
Miss setting multi setting setting is wrong for selector switch of multi-system.
(See SS2 on main unit's PC board)
Central control address overlapping
Transmission defect (indoor- centralizing)
Peripheral equipment transmission ault
Low -voltage detection or over- voltage detection /Includes the defect in 52C
Signal transmission error (between indoor unit and ODU)
Miss setting for multi system Setting is wrong for selector switch of multi
-system (see switch SS2 on the main unit's PC board)
Outdoor unit PCB abnormality
Outdoor fan motor lock malfunction /outdoor fan instantaneous over current malfunction.
Outdoor air thermistor faulty/ equipment operation in response to error will vary according to model
Discharge pipe thermistor faulty (outdoor unit)/ equipment operation in response to error
will vary according to model
Heat exchanger thermistor faulty /equipment operation in response to error will vary according
to model
Over heated radiation fin /inverter coolin defect
60
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