Service manual

210-10 ADL 43/62 599 75 60-77
3. Troubleshooting of Outdoor Unit
3.1 Firstly, check if power supply is normal
Check if power switch is turned on and the voltage is between 165V~253V.
3.2 Malfunction Code Table of Outdoor Unit
Malfunction Name
Nixie
Tube
LED Lamp
Yellow LED
Lamp
Red LED
Lamp
Green LED
Lamp
Freeze Protection
E2
Blinks for 3
times
IPM protection
H5
Blinks for 4
times
Overcurrent protection
E5
Blinks for 5
times
EEPROM reading and
writing malfunction
EE
Blinks for 11
times
Low voltage protection
PL
Blinks for 12
times
High voltage protection
PH
Blinks for 13
times
PFC overcurrent
protection
HC
Blinks for 14
times
Mismatching of models of
indoor and outdoor units
LP
Blinks for 16
times
Malfunction of outdoor
ambient temperature
sensor
F3
Blinks for 6
times
Malfunction of outdoor
pipe temperature sensor
F4
Blinks for 5
times
Malfunction of outdoor
discharge temperature
sensor
F5
Blinks for 7
times
Communication
malfunction
E6
灭
Low pressure
protection(refrigerant
leak)
E3
Blinks for 9
times
Abnormality of 4-way
valve
U7
Over-load protection
E8
Blinks for 6
times
Discharge temperature
protection
E4
Blinks for 7
times
Overload protection
H3
Blinks for 8
times
Over power protection
L9
Blinks for 9
times
3.3 Each Malfunction and Diagram
(1) LED Lamp Status Description
Different status of green, red and yellow indicators indicate different operation status and protection of the unit.
Note:The LED’s flash at a 1 second rate for the required number of flashes, and then a 2 second pause before repeating the 1
second rate sequence.
Note: Two or more faults can appear in the one LED fault sequence.