Display
Cause
Required action
E0
EEPROM error
Switch off the power to device for 1 min.
Contact specialist dealer
E1
Sensor suction pipe circuit 1 faulty / connection interrupted
Check the resistance of the sensor
( at 20°C=12.6k
Ω
/ 30°C=7.9k
Ω)
E2
Sensor suction pipe circuit 2 faulty / connection interrupted
Check the resistance of the sensor
( at 20°C=12.6k
Ω
/ 30°C=7.9k
Ω)
E3
Sensor suction pipe circuit 3 faulty / connection interrupted
Check the resistance of the sensor
( at 20°C=12.6k
Ω
/ 30°C=7.9k
Ω)
E4
Sensor discharge liquefier faulty / connection interrupted
Check the resistance of the sensor
( at 20°C=12.6k
Ω
/ 30°C=7.9k
Ω)
E5
Compressor voltage monitoring has tripped
Switch off the power to device for 1 min
E6
Sensor suction pipe circuit 4 faulty / connection interrupted
Check the resistance of the sensor
( at 20°C=12.6k
Ω
/ 30°C=7.9k
Ω)
E7
Communication error between outdoor and indoor unit
Contact specialist dealer
P0
Excessive temperature (Klixon) compressor
Check refrigerant
Check the resistance of the compressor
sensor (normal 0
Ω
)
P1
High pressure sensor has responded
Check refrigerant filling level,
check liquefier for soiling,
check fan AT
P2
Low pressure sensor has responded
Check stop valve AT, check refrigerant,
check electronic expansion valves,
P3
Overcurrent compressor has responded
Check winding resistance of the
compressor (1
Ω
= U-V / U-W / V-W)
P4
LED AT
flashes 9 times
Rotational speed monitoring on compressor has responded
Check compressor connections and PCB
P4
LED AT
flashes 13 times
Rotational speed monitoring on compressor (inverter module)
has responded
Check connections CN4, CN1 on the AT PCB
Contact specialist dealer
P5
Excess temperature sensor on outdoor unit unit has responded Exterior temperature > 1h under -15°C
P6
Sensor outlet liquefier has responded
(Condensation temperature over 65°C)
Clean liquefier
Reduce air inlet temperature
Problem display by blinker code
11
