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6-1. Trouble alarm
Trouble List
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
LED2 LED3 LED4
×
×
1
×
×
2
×
★
3
×
★
4
×
★
5
★
★
6
×
×
7
×
Ο
8
Ο
★
9
Ο
★
10
×
Ο
11
★
★
12
×
★
13
★
★
14
×
Ο
15
Ο
Ο
16
Ο
×
17
Indication by the indoor unit
Press the sleep botton 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
O
O
T
I
N
G
H
O
O
T
I
N
G
×
Normal
★
Room temperature sensor short-circuited, open
circuited or the corresponding test circuit in trouble
×
Indoor heat exchanger temperature sensor
short-circuited, open circuited or the corresponding
test circuit in trouble
×
Compressor temperature sensor short-circuited,
open circuited or the corresponding test circuit in
trouble
★
Outdoor heat exchanger temperature sensor
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 fan motor in trouble
×
DC compressor fails to start
Ο
DC compressor out of step
Ο: flashing
×: OFF
Troubles
16
Anti-freeze or overload control
18
DC compressor fails to start
19
DC compressor out of step
19
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