Mitsubishi Electric FDT125VNVF Technical Manual page 410

Error code
Indoor control PCB
E60
Remote controller:
Outdoor control PCB
Outdoor inverter
Note (1) Value in are for the Models SRC40 ~ 60.
1. Applicable model
Models FDC200, 250
2. Error detection method
Compressor rotor position
3. Condition of Error displayed
If it fails again to detect the
rotor position after shifting to
the compressor rotor position
detection operation, the
compressor stops.
• When it is restart
automatically after 3 minutes,
it is detected 4 times within 15
minutes.
4. Presumable cause
• Defective outdoor fan motor
• Defective outdoor control
PCB
• Defective inverter PCB
• Anomalous power supply
voltage
• Improper refrigerant amount
and refrigerant circuit
• Defective compressor (motor,
bearing)
Note: Insulation resistance
• The unit is left for long period without power supply or soon after installation, migrated liquid refrigerant may dissolve in the refrigerant oil in the compressor.
In such case insulation resistance decreases upto several MΩ or lower. If the electric leakage breaker is activated due to low insulation resistance, check followings.
➀ Check whehter the insulation resistance can recover or not, ater 6 hours has passed since power ON.
(By energize the crankcase heater, migrated liquid refrigerant in the refrigerant oil in compressor can be evaporated)
➁ Check whether the electric leakage breake conforms to high-hermonic specifications
(As units has inverter, in order to prevent from improper operation, be sure to use high-hermonic one.)
LED Green
Keeps flashing
Keeps flashing
Red LED
PCB
Keeps flashing
5. Troubleshooting
Is the
power supply voltage
OK?
YES
Reset the power supply and restart operation.
Does the compressor start?
YES
Is the
output from inverter
checker OK?
YES
Is the noise
or vibration of compressor
normal?
YES
Does it
start up normally without
recurrence of
E60.
YES
Red
Content
Stays OFF
Compressor rotor lock error
1 time flash
(Models FDC200, 250 only)
Green LED
Keeps flashing
Diagnosis
NO
NO
Does E59 occur?
NO
Does the
compressor run without
occurrence of
E42?
NO
NO
NO
409
- -
'12 • PAC-T-174
Countermeasure
Check and correct the
power supply voltage
Correct it based on the
YES
troubleshooting of E59
Correct it based on the
NO
troubleshooting of E42
Defective inverter PCB ➞
Replace.
* Replace also the power
transistor module.
Replace compressor.
Check compressor for
insulation, resistance.
Replace compressor if
necessary.
Defective inverter PCB ➞
Replace.
* Replace also the power
transistor module.