A-control error code list A-control error code list
Display of remote controller Display of remote controller
CODE Error details Inspected unit CODE Error details Inspected unit
Mis-wiring of indoor/outdoor unit. Reverse phase detection
Outdoor
Outdoor
Exceed the number of indoor unit connection.
L3 open phase detection Outdoor
Mis-wiring of indoor/outdoor unit.
63L connector open Outdoor
Outdoor
(Mis-wiring, disconnection)
49C connector open Outdoor
Start-up time over Outdoor
Connector 2 or more open Outdoor
Indoor/outdoor unit transmission error (Signal receiving error) Indoor
L2-phased open phase or 51CM connector open Outdoor
Indoor/outdoor unit transmission error (Transmitting error) Indoor
Reverse phase detector circuit (p.c.board) fault. Outdoor
Indoor/outdoor unit transmission error (Signal receiving error) Outdoor
Input circuit fault Outdoor
Indoor/outdoor unit transmission error (Transmitting error) Outdoor
Abnormal high discharging temperature Outdoor
Remote controller transmission error (Signal receiving error) RC
Inner thermostat (49C) operation
Outdoor
Remote controller transmission error (Transmitting error) RC
Abnormal high pressure
Outdoor
Remote controller transmission error (Signal receiving error) Indoor
(High pressure switch 63H worked)
Remote controller tarnsmission error (Transmitting error) Indoor
Direct cut operation Outdoor
M-NET transmission error
Indoor
High pressure error (ball valve closed) Outdoor
Outdoor
M-NET transmission error
Abnormal low pressure Outdoor
Outdoor
Serial transmission error
Over heat protection Outdoor
Indoor
Abnormality of room temperature thermistor (TH1).
Compressor over current (Overload) cut off Outdoor
Abnormality of pipe temperature thermistor/Liquid (TH2). Indoor
Compressor over current (Terminal relay operation) Outdoor
Abnormality of drain sensor (DS). Indoor
Compressor over current (start-up locked) cut off Outdoor
Malfunction of drain-up machine. Indoor
Compressor over current (operating locked) cut off Outdoor
Freezing / overheating protection detect. Indoor
Current sensor error Outdoor
Abnormality of pipe temperature. Indoor
Discharge thermistor short/open Outdoor
Abnormality of pipe temperature thermistor/Cond./Eva. (TH5)
Indoor
Outdoor thermistor short/open Outdoor
K-control K-control
˙PUH-EK ˙
Display of remote controller Outdoor unit
LED Diagnosis of malfunction Inspected unit
LED ON : Operation status
E0 Transmitting/receiving signal error. Indoor
LED flash : Cheak code display
P1 Intake air sensor abnormal Indoor
LED LED ON LED flash
P2 pipe sensor abnormal Indoor
LD1 Compressor directive Reversed-phase detect
Indoor
P4 Drain sensor abnormal
LD2 Heating directive Open phase detect
Malfunctioning of the drain overflow protecting
P5 Indoor LD3 During 63H1 operation Pipe sensor short / open
mechanism.
LD4 Compressor ON High pressure switch (63H2) operation
Abnormality of the coil frost/overheating
P6 Indoor
LD5 Outdoor fan ON Over current relay (51CM) operation
protection modes.
LD6 4-way valve ON Thermal switch (26C) operation
P3 System error (Transmitting/receiving signal)
Indoor
LD7 Bypass valve ON Thermistor (TH3) overheat protection
P7 System error (Address) Indoor
LD8 Crankcase heater ON Defective input
P8 Outdoor unit malfunction. Outdoor
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