1. Applicable model
5. Troubleshooting
All models
Diagnosis
Countermeasure
Is the
primary side of power source voltage
between phases
OK?
NO
YES
Save the Mente PC data of 30 minutes
before stopping
Reset the power source and restart
YES
NO
Is E32 displayed?
Replace control PCB.
Check it under the operating
conditions 30 minutes
before error occurred as
possible as you can.
• Check the operation status
and record it.
• Check it occurs soon
after power ON or during
operation or during
stopping.
(When asking the customer
to make rectification, it is
much easier to explain the
Ask the customer to make
rectification.
Check operation without
any rectifications.
2. Error detection method
Check the power source voltage
of inlet side of control PCB.
(Check only L3-phase)
3. Condition of error displayed
If the power voltage between
L3 and L1 phases or L3 and L2
phases becomes 0V.
• Power source voltage failure
on primary side
• Control PCB anomaly
4. Presumable cause
Note:
Error code
Remote control:
7-segment display:
LED
Green
Red
Condensing
unit
Keep
flashing
1-time
flash
Content
–
E32
Open phase of power line
User Guide | Optyma™ iCO2
48 | BC408445719305en-000101
© Danfoss | Climate Solutions | 2023.01 | LCA012A030
7. Troubleshooting