Mitsubishi Heavy Industries FDT Series Technical Manual page 457

Indoor display
Error code
E42
Remote controller:
control PCB
inverter PCB
3.
•
•
• Faulty power supply
Note:
RUN light
ON
Green LED
Outdoor
Keeps flashing
Yellow LED
Outdoor
1 time flash
Is the
Power supply
voltage OK?
YES
Are the
service valves
opened?
YES
Is the
high pressure
during operation
OK?
YES
Is the
checked result of
insulation resistance and
coil resistance (1) of
compressor motor
OK?
YES
To next page.
TIMER light
Content
1 time flash
Red LED
1 time flash
NO
NO
NO
NO
(1) 0.293 or more at 20°C (Single phase models)
1.172 or more at 20°C (3-phase models)
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