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INDOOR UNIT DISPLAY
22. ERROR CODE LIST
CODE ALARM DESCRIPTION
U8 Circuit failure to control "zero-crossing"
C5 Error in jumper cup positioning
H6 No signal return from the indoor unit fan
F1 Ambient air sensor not connected or short circuit
F2 Temperature sensor on the exchanger of the indoor unit not connected or short circuit
b5 Temperature sensor on liquid valve not connected or short circuit
b7 Temperature sensor on gas valve not connected or short circuit
P7 Temperature sensor on the control module not connected or short circuit
F3 External air sensor not connected or short circuit
A5 Inverter temperature input sensor on the external unit, not connected or short circuit
F4
Intermediate temperature sensor on the exchanger on the external unit, not connected or short
circuit
A7 Temperature sensor output from the exchanger to the outdoor unit, not connected or short circuit
F5 Compressor discharge temperature sensor not connected or short circuit
E6 Communication error between internal and external units
U1 Error on compressor phase management circuit
HE Protection for demagnetization of the compressor
U3 Voltage drop on the DC bus
P8 Temperature control module
F0 Refrigerant gas shortage, or system lockout
PU Condenser charge malfunction
E1 Over-voltage protection system
E3 Under-voltage protection system
LE Compressor in block
P0 Driver module reset
LF Compressor in protection (excessive speed)
PF Card malfunction on the indoor unit
P9 AC Counter Protection System
Heating mode
Cooling mode
Dehumidification mode
ON/OFF
IR Reciver
Display
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