Panasonic 2WAY Multi - A25 Clutch Error

IV–25
A25 Clutch Error
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Error detection method
A Clutch Error fault is detected when clutch coil temperature or clutch 2 coil temperature is 110°C or more for up
to 1 minute.
Error is detected with one occurrence.
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Troubleshooting
*The compressor uses a twin clutch specifi cation. Inspect both clutch 1 and clutch 2.
1
Compressor
lock
1-1
Rotate the compressor pulley by hand while stopped, to
check for compressor lock. Locked?
(Both clutch 1 and clutch 2 are off, so be sure to turn the
center of the pulley and not just the perimeter.)
Yes Replace compressor
No 2-1
2
Clutch coil
sensor
2-1
Use a contact thermometer to measure the temperature of
the back of the pulley. Is this temperature nearly identical
(within 10°C) to that of clutch 1 and clutch 2 coil of the
outdoor main board?
OK Investigate further
NG 2-2
2-2
Is there a ground fault or short circuit in wiring between
outdoor main board connector 2P (blue) CN060 and 2P
(yellow) CN064 and their respective clutch coil sensors.
Yes Repair wir ing
No
Replace clutch coil
sensor
● For board and Electrical Wiring Diagram, see Chapter 6.
• Outdoor main board: page VI-2
• Outdoor power board: page VI-3
• Converter board: VI-4
• Indoor control board for DC motor models: page VI-5
• Outdoor Unit Electrical Wiring Diagram: page VI-6
CL2 (clutch 2)
CL (clutch)
• 2-1
See Chapter 5 for procedure to view clutch and clutch 2 coil temperature on the outdoor main board.
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