Mitsubishi Heavy Industries FDT Series Technical Manual page 430

Error code
None
Remote controller:
3.
Note:
RUN light TIMER light
Indoor
display – –
Green LED Red LED
Outdoor
control PCB
– –
From
previous page
[Unit side]
YES
Does noise/vibration
occur when the cooling/
heating operation is
performed
normally?
NO
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- - 429 429
Content
Are the pipes
contacting the
casing?
NO
Is it heard
continuous hissing or
roaring sound?
NO
Are hissing sounds
heard at the startup or
stopping?
NO
Is blowing sound
heard at the start/stop
of defrosting during
heating?
NO
Is cracking noise
heard during heating
operation?
NO
Hissing noise is
heard during cooling
operation or after
stopping.
NO
- -
'12 • PAC-T-173
YES
YES
YES
YES
YES
YES