Error code
Remote control:
7-segment display:
LED
Green
Red
Keep
1 time
flash
flashing
Content
5.Troubleshooting
Diagnosis
Countermeasure
Save the Mente PC data of
30 minutes before stopping
NO
Is the
connector of the
anomalous sensor
connected
properly?
YES
NO
Are
the characteristics
of sensor OK?
*3
YES
Insert the connector securely.
・
Check the operation
status and record it.
・
Check it occurs soon
after power ON or during
operation or during
stopping.
・
Check sensing value
・
Compare the temperature
shown in Mente PC data
to the acutal temperature
measured with thermometer.
Replace the control PCB of
condensing unit.
Replace temperature sensor
(Tho-S1).
Note:
–
E53-1
Suction pipe temperature sensor
(Tho-S) anomaly
*3 Check several times to prove any poor connection.
[Temperature-resistance characteristics]
Suction pipe temperature sensor (Tho-S)
Temperature(°C)
Resistance
(kΩ)
100
90
80
70
60
50
40
30
20
10
0
-20
0
20
40
60
80
100
All models
Detection of anomalously low
temperature (resistance) of
temperature sensor (Tho-S1)
If the sensor detects -50°C or
lower temperature for 5 seconds
continuously
・
Broken sensor harness or
the internal wire of sensing
section (Check the molded
section as well.)
・
Disconnection of sensor
harness connection
(connector)
・
Control PCB anomaly
Condensing
unit
1. Applicable model
2. Error detection method
4. Presumable cause
3. Condition of error displayed
User Guide | Optyma™ iCO2
62 | BC408445719305en-000101
© Danfoss | Climate Solutions | 2023.01 | LCA012A030