Mitsubishi Heavy Industries FDUA160AVSAVH Service Manual page 70

Error code
None
Remote control:
1. Applicable model
All models
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Remote control wire
breakage/short-circuit
• Defective remote control
• Malfunction by noise
• Broken harness
• Faulty indoor unit control
PCB
Note:
LED Green Red
Keeps flashing 3-time flash
Indoor
Keeps flashing 2-time flash
Outdoor
5. Troubleshooting
Diagnosis
Is the connection of the
remote control's wiring OK?
X (white), Y (black)
Does the voltage
between X and Y in the
NO
indoor terminal block
exceed 15 VDC?
Remove wire for
the remote control
Does the re-measured
voltage between X and Y
in the indoor terminal block
exceed 15 VDC?
69
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Content
Power source system error
(Power source to remote control)
NO
YES
YES
Power source reset
Does resetting the
power source return
it to normal?
YES
NO
YES
-
'21 • PAC-SM-398
Countermeasure
Correct it.➞Insert connector
securely.
Remote control wire
NO
breakage?
Replace remote control.
Malfunction by temporary
noise
Defective indoor unit
control PCB➞Replace.
Remote control wire
breakage?
Replace remote control.