Mitsubishi Heavy Industries SCM80ZS-W User Manual

-
154
-
'19 • SCM-SM-276
Error code
Remote control:
LED Green Red
Indoor
Outdoor
Content
E59
Compressor startup failure
Keeps ashing
Stays OFF
– 2
-
time ash
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
NO
NO
Is power
source voltage
OK?
Is
the pressure balance
at starting OK?
NO
NO
Is the
insulation resistance and
resistance between terminals (1)
of compressor OK ?
Is power transistor
module OK?
Try to startup
several times
Does it start?
NO
NO
Is
the output of inverter
checker OK ?
Compressor does not start at all.
Neither noise nor vibration cannot be heard.
Disconnect the outdoor fan motor
connector and try to startup.
Does
compressor
startup?
YES
NO
Note: Several times restarting
may resolve it, because migrated
liquid refrigerant in the
compresser is discharged from
the compressor.
YES
YES
YES
YES
YES
(1) 1.154Ω or more at 20°C
Replace outdoor fan motor.
Check power source
voltage.
Check refrigerant amount
and refrigerant circuit.
Repalce compressor.
Defective outdoor unit
PCB
➞
Replace.
Defective outdoor unit
PCB
➞
Replace.
Repalce compressor.
2. Error detection method
If it fails to change over to the
rotor detection operation of
compressor motor
3 . Condition of error displayed
If compressor fails to startup for
42 times
4. Presumable cause
• Outdoor fan motor anomaly
• Outdoor unit main PCB
anomaly
• Anomalous power source
voltage
• Improper refrigerant amount
and refrigerant circuit
• Faulty 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 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.)

Mitsubishi Heavy Industries SCM80ZS-W Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SCM80ZS-W
Category	Air Conditioner
Language	English