Error code
Remote control:
7-segment display:
LED
Green
Red
Stay
OFF
Content
No display
No display
Anomalous sound and vibration (1)
Stay
OFF
5. Troubleshooting
Diagnosis
Countermeasure
Is the
anomalous sound heard
during operation or just
after stopping operation
of condensing unit?
YES
Does the
anomalous sound come
not only from condensing unit
but also from the
whole building?
YES
Is there
any looseness on installation of
condensing unit?
Do the
pipings installed on site
contact each other
at some parts?
NO
NO
NO
YES
YES
NO
Note:
Condensing unit is not a
cause.
If option parts is used ,
check the secure connection
of them.
Go to next page.
Anchor the condensing unit
securely
If the vibration from the
condensing unit is caused,
please connect the pipings
with flexible pipe.
Rectify the contact of
piping.
1.Applicable model
All models
2.Error detection method
3. Condition of error displayed
4.Presumable cause
Condensing
unit
User Guide | Optyma™ iCO2
© Danfoss | Climate Solutions | 2023.01 | LCA012A030
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