-
116
-
YES
NO
Is the
power transistor
cooling fan fastening OK?
·Fastening screws.
·Apply silicone to the
cooling fan.
Replace the outdoor
unit inverter PCB.
Fasten it correctly.
Reset the power supply.
Occurs
Does E51 occur?
14
[Inverter, fan motor abnormal]
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.
Temperature (
°
C)
5k
Ω
at 25
°
C
Is the
suction pipe
thermistor connector
OK?
Are the
suction pipe
thermistor characteristics
OK, is there any
broken wire?
Correction
NO
YES
YES
NO
Defective outdoor unit PCB
Replacement (Defective suction
pipe thermistor input circuit
Defective suction pipe
thermistor Replacement
Thermistor resistance (k
Ω
)
15
[Defective suction pipe temperature thermistor]
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
If the temperature detected by the thermistor is –50˚C or lower continuously
for 5 seconds between 10 minutes and 10 minutes 20 seconds after the com-
pressor goes ON, the compressor stops. After a 3 minute delay, the compres-
sor restarts. If this condition is detected 3 times within 40 minutes.
