Danfoss Optyma iCO2, User Manual

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5.Troubleshooting
Diagnosis Countermeasure
• Check the operation status
and record it.
• Check the sensing value
of high pressure when
63H1-1 is activated.
• Check the activated
pressure of high pressure
switch (63H1-1) with
the sensing value of high
pressure sensor.
Check the cause of F2 blown.
Check wiring mistake and
short circuit of AC220V line.
Replace control PCB
If it is a fault of connector
or disconnection of wiring
harness, rectify it.
Since the wrong assembling
of high pressure switch is
suspected, check it as well
Connect the connector securely.
Rectify the disconnection of
63H1-1 wire.
After restarting operation, check
the high pressure sensor itself.
(If the high pressure sensor
has anomaly, replace it.)
After checking, replace fuse F2.
High pressure sensor anomaly
is suspected
Clear the clog.
[Check items]
Gas cooler, Strainer,
Clogging of gas cooler
• High pressure increases to
140 bar or higher.
• 63H1-1 is activated 5 times
within 60 minutes.
• 63H1-1 is activated for
60 minutes continuously.
When high pressure switch
63H1-1 is activated
• Short-circuit of air flow at
gas cooler / Disturbance of air
flow / Clogging filter / Fan
motor anomaly
• Control PCB anomaly
• Disconnection of high
pressure switch connector
• Breakage of high pressure
switch harness/Disconnection
of connector
• Closed service valves
• High pressure sensor anomaly
Note: If the same error does not reappear, continue to get data with Mente PC.
YES
NO
NO
NO
7-segment : Check C31
NO
YES
Is the fuse F2 blown?
Does the
sensing value of high
pressure sensor show 140 bar?
(Is 63H1-1 normal?)
Is there loose
connection of 63H1at the
connector on the PCB
or disconnection of
63H1-1wire?
Does the
unit stop, when the high
pressure increases
to 140 bar?
Does the refrigerant
circuit get clogged?
YES
NO
YES
YES
YES
NO
YES
Save the data 30 minutes
before stopping into the
Mente PC
Is 63H1-1 activated at
140 bar or higher?
Is 63H1-1normal?
Are the connector and the
wiring harness of
63H1-1OK?
NO
Error code
Remote control:
7-segment display:
LED Green Red
Keep
flashing
1-time
flash
Content
–
E40
* From the viewpoint of safety, pressure cannot be
measured with pressure gauge during operation.
Please check pressure during stopping operation.
Condensing
unit
All models
1. Applicable model
2. Error detection method
3. Condition of error displayed
4. Presumable cause
High pressure anomaly
(63H1-1 activated)
User Guide | Optyma™ iCO2
© Danfoss | Climate Solutions | 2023.01 | LCA012A030 BC408445719305en-000101 | 53