Mitsubishi Electric SRK100VNPZJX, Technical Manual

Page: 442 / 509

Error code
Remote controller:
Content
1 time flash Keeps flashing
1 time flash
1 time flash ON
Indoor display
RUN light TIMER light
Green LED
Yellow LED
Red LED
Outdoor
control PCB
Outdoor
inverter PCB
E42
Current cut (1/2)
1. Applicable model
5. Troubleshooting
All models Diagnosis Countermeasure
Is the
Power supply
voltage OK?
YES
Are the
service valves
opened?
NO
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
(1) 0.293
Ω
or more at 20°C (Single phase models)
1.172
Ω
or more at 20°C (3-phase models)
NO
NO
NO
To next page.
Check power supply.
Open the valves.
Check refrigerant amount
and refregerant circuit
* In case of transitional
increase of high pressure
and/or test run, several
times restarting may
recover it, because liquid
refrigerant (migrated)
in the compresser is
discharged from the
compressor.
Replace compressor.
2. Error detection method
In order to prevent from
overcurrent of inverter,
if the current exceeds the
specifications, it makes the
compressor stopping.
3. Condition of Error displayed
• If the output current of inveter
exceeds the specifications,
it makes the compressor
stopping.
• After 3-minute delay, the
compressor restarts, but if this
amonaly occurs 4 times within
30 minute after the intial
detection.
4. Presumable cause
• The valves closed
• Faulty power supply
• Insufficient refrigerant amount
• Faulty compressor
• Faulty power transistor
module
Note:
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'12 • PAC-T-174