Troubleshooting
61
9. Troubleshooting
9.1 Malfunction Indicator
Note:
○
: off
●
: on
Ƽ
: blink
When several malfunctions occur at the same time, they will be displayed in circulation and every malfunction is
displayed for 5s.
NO
Malfunction
description
LED1 LED2 LED3 LED4
0 Normal
stop
○
○
○
○
1 Compressor
run
● ○
○
○
2
Compressor overload protection
Ƽ
○
○
○
3 Discharge
protection
○
●
○
○
4
Outdoor unit overload protection
●
●
○
○
5
High pressure protection
Ƽ
●
○
○
6
Over current protection
○
Ƽ
○
○
7 IMP
protection
●
Ƽ
○
○
8
IMP over heating protection
Ƽ
Ƽ
○
○
9
PFC protection (including PFC overheating protection)
○
○
●
○
10
Phase current protection
●
○
●
○
11
Over voltage protection
Ƽ
○
●
○
12
Insufficient voltage protection
○
●
●
○
13 Start
failure
●
●
●
○
14 Compressor
desynchronizing
Ƽ
●
●
○
15
Compressor phase-lacking protection
○
Ƽ
●
○
16
Compressor phase current detection malfunction
●
Ƽ
●
○
17
Memory chip mistake
Ƽ
Ƽ
●
○
18
DC power supply circuit-short
○
○
Ƽ
○
19 Defrosting
●
○
Ƽ
○
20 Oil
return
Ƽ
○
Ƽ
○
21
Complete unit frequency restriction protection
○
●
Ƽ
○
22
Complete unit frequency dropping protection
●
●
Ƽ
○
23
Unit A frequency restriction or frequency dropping protection
Ƽ
●
Ƽ
○
24
Unit B frequency restriction or frequency dropping protection
○
Ƽ
Ƽ
○
25
Unit C frequency restriction or frequency dropping protection
●
Ƽ
Ƽ
○
26
Unit D frequency restriction or frequency dropping protection
Ƽ
Ƽ
Ƽ
○
27
Outdoor ambient temperature sensor protection
○
○
○
●
28
Outdoor tube temperature sensor protection
●
○
○
●
29
Discharge temperature sensor protection
Ƽ
○
○
●
30
IPM thermal resistance malfunction
○
●
○
●
31
Unit A liquid pipe temperature sensor malfunction
●
●
○
●
32
Unit A gas pipe temperature sensor malfunction
Ƽ
●
○
●
33
Unit B liquid pipe temperature sensor malfunction
○
Ƽ
○
●
34
Unit B gas pipe temperature sensor malfunction
●
Ƽ
○
●
35
Unit C liquid pipe temperature sensor malfunction
Ƽ
Ƽ
○
●
36
Unit C gas pipe temperature sensor malfunction
○
○
●
●
37
Unit D liquid pipe temperature sensor malfunction
●
○
●
●
38
Unit D gas pipe temperature sensor malfunction
Ƽ
○
●
●
39
Unit A mode conflict
○
●
●
●
40
Unit B mode conflict
●
●
●
●
41
Unit C mode conflict
Ƽ
●
●
●
42
Unit D mode conflict
○
Ƽ
●
●
