Mitsubishi SCM40ZS-S, Техническое руководство

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256
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'16 • SCM-T-199
E16
Indoor fan motor anomaly
Keeps flashing 1-time flash
Outdoor
– Stays OFF
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
NO
YES
YES
Does any
foreign material
intervene in rotational area
of fan propeller?
Is DC280V
detected between
①
-
④
of
fan motor connector
CNM?
Is it normalized?
Does the fan
rotate smoothly when turned
by hand?
YES
NO
NO
NO
YES
（ 1 ）
Note (1)
④
for GND
NO
YES
Power source reset
Is the fuse F3
（ FDTC:F202 ） blown?
Remove foreign material.
Replace the fan motor.
Check power source
voltage.
Replace faulty fan motor
and power PCB.
Replace fan motor. (If the
error persists after replacing
the fan motor, replace the
indoor control PCB.)
Malfunction by temporary
noise
2. Error detection method
Detected by rotation speed of
indoor fan motor
3. Condition of error displayed
When actual rotation speed of
indoor fan motor drops to lower
than 200min
-1
for 30 seconds
continuously, the compressor
and the indoor fan motor
stop. After 2-seconds, it starts
again automatically, but if this
error occurs 4 times within
60 minutes after the initial
detection.
4. Presumable cause
• Defective indoor power (control)
PCB
• Foreign material at rotational
area of fan propeller
• Defective fan motor
• Dust on indoor power (control)
PCB
• Blown fuse
• External noise, surge
Note:
Error code
Remote control:
LED Green Red
Indoor
Content