-
282
-
YES
NO
Replace the outdoor
unit inverter PCB.
Fasten it correctly.
Reset the power supply.
Occurs
Does E51 occur?
Are the
screws to fix the power
transistor fastened tightly?
Is the silicon applied uniformly between
the power transistor and the
radiator fin?
16
[Inverter, fan motor fault] [Only case of 302 ~ 1002 models]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
Lights contiously
Keeps flashing
Outdoor unit
Error display :
E51
•
Display conditions
When the power transistor temperature is 110°C or
higher continuously for 15 minutes.
Is the
suction pipe
thermistor connector
OK?
Correct it
NO
YES
YES
NO
Suction pipe thermistor is
defective. Replace it.
The outdoor unit control PCB
is defective Replace it
Are the suction pipe
thermistor
characteristics OK?
5
10
15
0
20
40
60
80
100
Suction pipe thermistor (Tho-S)
Resistance-temperature characteristics
Thermistor resistance (k
Ω)
Temperature (ºC)
17
[Defective suction pipe temperature thermistor]
[Only case of 302 ~ 1002 models]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
1 time flash
Keeps flashing
Outdoor unit
Error display :
E53
•
Display conditions
The compressor stops when the suction pipe thermistor detects -50°C or lower
for 5 seconds continuously between 10 minutes and 10 minutes 20 seconds after
the compressor starts. And it will restart automatically after 3-minute delay.
The error occurs when the condition happens 3 times within 40 minutes.
