–
48
–
Error code
Remote controller:
7-segment display:
LED
Green
Red
Indoor
Outdoor
Content
None
Excessive noise/vibration (3/3)
–
–
–
–
1. Applicable model
5. Troubleshooting
All models
Diagnosis
Countermeasure
[Adjustment
during commissioning]
Does noise/vibration occur when the
cooling/heating operation is
performed under anomalous
condition?
From 2/3
YES
If insufficient cooling/
heating problem happens
due to anomalous operating
conditions at cooling
/heating, followings are
suspicious.
• Excessive charged
amount of refrigerant
• Insufficient charge
amount of refrigerant
• Intrusion of air, nitrogen,
etc.
In such case, it is necessary
to recover refrigerant,
vacuum-dry and recharge
refrigerant.
* Since there could be
many causes of noise/
vibration, the above may
not cover all.
In such case, check the
conditions when, where,
how the noise/vibration
occurs according to
following check points and
ask our consultation
• Indoor/outdoor unit
• Cooling/heating/fan
mode
• Startup/stop/during
operation
• Operating condition
(Indoor/outdoor
temperatures and
pressures)
• Time it occurred
• Operation data retained
by remote controller
or Mente PC such as
compressor rotation
speed, heat exchanger
temperature, EEV
opening degree and etc.
• Tone (If available, record
the noise)
• Any other anomalies
2. Error detection method
3. Condition of error displayed
4. Presumable cause
Note:
Summary of Contents for 112KXE6
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