A25 Clutch Error - Panasonic 2WAY Multi Technical & Service Manual

A25 Clutch Error

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.
Troubleshooting
*The compressor uses a twin clutch specifi cation. Inspect both clutch 1 and clutch 2.
1 Rotate the compressor pulley by hand while stopped, to
Compressor check for compressor lock. Locked?
1-1
lock (Both clutch 1 and clutch 2 are off, so be sure to turn the
center of the pulley and not just the perimeter.)
2 Use a contact thermometer to measure the temperature of
Clutch coil the back of the pulley. Is this temperature nearly identical
2-1
sensor (within 10°C) to that of clutch 1 and clutch 2 coil of the
outdoor main board?
Is there a ground fault or short circuit in wiring between
2-2 outdoor main board connector 2P (blue) CN060 and 2P
(yellow) CN064 and their respective clutch coil sensors.
● 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
• 2-1
See Chapter 5 for procedure to view clutch and clutch 2 coil temperature on the outdoor main board.
CL2 (clutch 2)
CL (clutch)
IV–25
Yes Replace compressor
No 2-1
OK Investigate further
NG 2-2
Yes Repair wiring
Replace clutch coil
No
sensor