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Mitsubishi FDUA125VNPWVH - Zone Control Installation (FDU;FDUA); Zone Control System Outline; Zone Control Duct Design; Relay and Transformer Installation

Mitsubishi FDUA125VNPWVH
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Error code
Remote control:
LED Green Red
Content
Indoor
Stays OFF
Keeps flashing
E60
Compressor rotor lock error
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is the
power source voltage
OK?
NO
Reset the power source and restart operation.
YES
Does the compressor start?
Does E59 occur?
NO
YES
Does it
start up normally without
recurrence of
E60?
YES
NO
Does the
compressor run without
occurrence of
E42?
NO
YES
Is the noise
or vibration of compressor
normal?
Is the
output from inverter
checker OK?
YES
YES
NO
NO
NO
Check and correct the
power source voltage.
Correct it based on the
troubleshooting of E59.
Correct it based on the
troubleshooting of E42.
Defective outdoor unit
PCB
Replace.
Replace compressor.
Check compressor for
insulation resistance.
Replace compressor if
necessary.
Defective outdoor unit
PCB
Replace.
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.
4. Presumable cause
Defective outdoor fan motor
Defective outdoor unit PCB
Anomalous power source
voltage
Improper refrigerant amount
and refrigerant circuit
Defective compressor (motor,
bearing)
Note: Insulation resistance
The unit is left for long period without power source 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.
Check whehter the insulation resistance can recover or not, after 6 hours has passed since power ON.
(By energize the crankcase heater, migrated liquid refrigerant in the refrigerant oil in compressor can be evaporated.)
Check whether the electric leakage breaker conforms to high-harmonic specications.
(As units has inverter, in order to prevent from improper operation, be sure to use high-harmonic one.)
'22 • PAC-SM-412
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95
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