42
Troubleshooting
9.2
Flashing LED of Indoor/Outdoor Unit and Primary Judgement
Malfunction Code
Name of Operation Status
Yellow LED
Red LED
Green LED
Display on IDU
1
Compressure operates
Blink once
2
Defrosting
Blink twice
H1
3
Freeze prevention protection
Blink for 3 times
E2
4
IPM protection
Blink for 4 times
H5(displayed
after it occurs for
successively 6
times)
5
Overcurrent protection
Blink for 5 times
E5
6
Overload protection
Blink for 6 times
H4
7
Discharge protection
Blink for 7 times
E4
8
Overload protection
Blink for 8 times
H3
9
Capacity power protection
Blink for 9 times
L9
10
Read-write malfunction of
EEPROM
Blink for 11 times
11
Low-voltage protection
Blink for 12 times
PL
12
High-voltage protection
Blink for 13 times
PH
13
PFC overcurrent protection
Blink for 14 times
HC
14
Models of IDU and ODU don't not
match
Blink for 16 times
LP
15
Limit frequency(current)
Blink once
16
Limit frequency(discharge)
Blink twice
17
Limit frequency(overload)
Blink for 3 times
18
Limit frequency(freeze
prevention)
Blink for 4 times
19
Malfunction of outdoor ambient
temp sensor
Blink for 6 times
F3
20
Malfunction of outdoor pipe temp
sensor
Blink for 5 times
F4
21
Malfunction of outdoor discharge
temp sensor
Blink for 7 times
F5
22
Temperature for operation of the
unit is reached.
Blink for 8 times
23
Limit frequency(power)
Blink for 13 times
24
Protection of fan
Blink for 14 times
25
Normal communication
Continuously
blink
26
Malfunction of communication
Off
E6
27
Malfunction of indoor ambient
temp sensor
F1
28
Malfunction of indoor pipe temp
sensor
F2
