Mitsubishi Heavy Industries SRK100VNXWZRF Service Manual page 143

Error code
Indoor display
Remote control:
E59
Outdoor unit
1. Applicable model
Models FDC100VN(S)A-W
2. Error detection method
When it fails to change over to
the operation for rotor position
detection of compressor motor
3. Condition of error displayed
If the compressor fails to startup
for 20 times (10 patterns × 2
times) continuously
4. Presumable cause
• Faulty outdoor fan motor
• Faulty outdoor unit control PCB
• Anomalous power source
voltage
• Insufficient or excessive
refrigerant amount
• Faulty component for
refrigerant circuit
• Compressor anomaly
(Motor or bearing)
Note:
RUN light
--
Green LED
control PCB
Keeps flashing
5. Troubleshooting
From previous page
After power OFF, turn SW6-4 of
outdoor unit control PCB ON and
connect the outdoor unit main
checker. Then power ON again.
inverter output OK?
(Check by inverter
Try to restart several times.
TIMER light
Content
--
Compressor startup failure (2/2)
Red LED
(Models FDC100VN(S)A-W only)
5-time flash
Diagnosis
YES
Is the (Outdoor unit control PCB anomaly)
power transistor
module OK?
YES
Is the
checker.)
Note(1) Several times restarting
may recover it, because
liquid refrigerant migrated
in the compressor could
YES
be discharged from the
compressor.
Does it start?
142
- -
'22 • PAC-SM-422
Countermeasure
Replace outdoor unit
NO
control PCB.
Replace outdoor unit
NO
control PCB.
Replace compressor.
NO