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6-1. Trouble alarm
Trouble List
6-1-1 Indication on the outdoor unit
When the compressor is interrupted, the outdoor LEDs are used to indicate the
troubles listed below:
Symbols for indicator lights: ★: ON
LED1
LED2
×
×
1
×
×
2
×
★
3
×
★
4
×
★
5
★
★
6
×
×
9
×
Ο
10
Ο
★
11
Ο
★
12
×
Ο
13
★
★
14
×
★
18
★
★
19
×
Ο
20
Ο
Ο
22
Ο
×
23
6-1-2 Indication by the indoor unit
Press the high power for 4 times in a row and the trouble codes listed below
will be displayed.
0
No trouble
1
Outdoor coil temperature sensor in
trouble
2
Compressor temperature sensor in
trouble
3
Voltage transformer in trouble
4
Current transformer in trouble
5
IPM module protection
6
Over and under-voltage control
S
H
O
O
T
I
N
G
S
H
O
O
T
I
N
G
Ο: flashing
LED3
×
Normal
★
Unused
×
Outdoor heat exchanger temperature sensor be protected
×
Compressor temperature sensor short-circuited, open
circuited or the corresponding test circuit in trouble
★
Outdoor
short-circuited, open circuited or the corresponding test
circuit in trouble
×
Outdoor atmosphere temperature sensor short-circuited,
open circuited or the corresponding test circuit in trouble
Ο
Signal communication abnormal (indoor – outdoor)
×
Power module (IPM)protection
★
Maximum current control
×
Current overload control
★
Compressor discharge temperature too high
Ο
Over and under-voltage control
Ο
Compressor housing temperature too high
★
Outdoor memory in trouble
Ο
Indoor heat exchanger temperature sensor be protected
×
DC compressor fails to start
Ο
DC compressor out of step
×: OFF
Troubles
heat
exchanger
16
Anti-freeze or overload control
18
DC compressor fails to start
19
DC compressor out of step
33
Room temperature sensor in trouble
26
temperature
sensor
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