Mitsubishi Electric FDT125VNVF Technical Manual page 453

Indoor display
Error code
E59
Remote controller:
inverter PCB
1. Applicable model
All models
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
Note:
RUN light
–
Green LED
Outdoor
control PCB
Keeps flashing
Yellow LED
Outdoor
Stays OFF
5. Troubleshooting
From previous page
After power OFF, turn SW10-4 of
inverter PCB ON and connect the
inverter checker. Then power ON
again.
inverter output OK?
(Check by inverter
Try to restart several times
TIMER light
Content
–
Red LED
Compressor startup failure (2/2)
5 times flash
Diagnosis
YES
Is the (inverter 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 be discharged
YES
from the compressor.
Does it start?
452
- -
'12 • PAC-T-174
Countermeasure
Replace inverter PCB
NO
Replace inverter PCB
NO
Replace compressor
NO