Mitsubishi Heavy Industries SCM71ZM-S1 Technical Manual page 282

Error code
E60
Remote control:
1. Applicable model
All models
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 main 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.
➀ 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 Red
Keeps flashing Stays OFF
Indoor
– 7-time flash
Outdoor
5. Troubleshooting
Diagnosis
Is the
power source voltage
OK?
YES
Reset the power source 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
281
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Content
Compressor rotor lock error
NO
NO
YES
Does E59 occur?
NO
Does the
compressor run without
occurrence of
E42?
NO
NO
NO
-
'17 • SCM-T-225
Countermeasure
Check and correct the
power source voltage
Correct it based on the
troubleshooting of E59
Correct it based on the
NO
troubleshooting of E42
Defective outdoor main
PCB ➞ Replace.
Replace compressor.
Check compressor for
insulation, resistance.
Replace compressor if
necessary.
Defective outdoor main
PCB ➞ Replace.