-
266
-
Error code
Remote controller:
7-segment display:
LED Green Red
Indoor
Outdoor
Content
E56
E56
Power transitor temperature
sensor anomaly (Tho-P1)
Keeps flashing
Stays Off
Keeps flashing
1 time flash
1. Applicable model
5. Troubleshooting
Outdoor unit
Diagnosis Countermeasure
Is the
connector of
sensor connected
properly OK
?
Are the
characteristics of
sensor OK?
Temperature-resistance characteristics of
power transistor temperature sensor (Tho-P1)
Save data for 30 minutes before stopping in Mente PC
NO
NO
YES
Temperature (°C)
Power transistor sensor
resistance (kΩ)
0
20
40
60
80
100
120
140
160
180
200
0 20 40 60 80 100 120 140
*1 Check several times to prove any poor connection
*1
Check and save the data of
operating condition.
Check the conditions
whether it occurs
immediately after the
power on or during
operation or stopping.
Check the sensed value.
Compare the temperature
of Mente PC data with
actual measured value.
Insert the connector
securely.
Replace power transistor
temperature sensor
(Tho-P1).
Replace outdoor unit control
PCB.
2. Error detection method
Detection of anomalously low
temperature (resistance) of
Tho-P1
3
.
Condition of error displayed
When the outdoor air temperature
is above 0ºC, if -10ºC or lower
is detected for 20 seconds
continuously within 10 minutes
to 10 minutes 30 seconds after
compressor ON, compressor stops.
When the compressor is restarted
automatically after 3-minutes
delay, if this anomaly occurs 3
times within 40 minutes
4. Presumable cause
• Broken sensor harness or
the internal wire of sensing
section (Check the molded
section as well)
• Disconnection of sensor
harness connection
(connector)
• Outdoor unit control PCB
anomaly
Note:
YES
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