Mitsubishi SCM40ZS-S User Manual

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246
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'16 • SCM-T-199
Error code
Remote control:
LED Green Red
Indoor
Stays OFF Keeps flashing
Content
WAIT
Communication error at
initial operation (3/3)
Outdoor
–
Stays OFF
1. Applicable model
5. Troubleshooting
All models
When the remote control
display is extinguished after the
power on.
Diagnosis Countermeasure
YES
NO
Remote control display is
extinguished after the power on.
NO
NO
Is the
green LED on the indoor unit
flashing?
Is the
fuse on the indoor control
PCB OK?
YES
Is
approx. DC10-11V detected
between wires at the remote control
side after disconnecting the
remote control?
Are wires
connected properly between the indoor and
the outdoor units?
Is approx.
DC20V detected between
②-③
on the outdoor unit terminal
block?
NO
Is approx
DC20V detected between
②-③
on the indoor unit terminal
block?
YES
NO
YES
YES
YES
NO
Replace fuse.
Short-circuit on remote
control wire
Defective remote control
Correct wires.
Defective outdoor sub
PCB
→
Replace.
Defective connection wire
(Broken wire)
Noise
Defective indoor control
PCB
→
Replace.
2. Error detection method
3 .
Condition of error displayed
4. Presumable cause
• Blown fuse
• Connection between PCB’s
• Blown fuse
• Faulty indoor control PCB
• Defective remote control
• Wire breakage on remote
control
• Faulty outdoor sub PCB
Note:

Mitsubishi SCM40ZS-S Specifications

General

Brand	Mitsubishi
Model	SCM40ZS-S
Category	Air Conditioner
Language	English