(Main Parts)
MAINTENANCE
4-56
SM-16007
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Turn ON the outdoor unit
power source.
No
No
There are possibilities of the following
failures:
• Power Circuit of O.U. PCB Failure
• Failure of 208-230V load
equipment such as solenoid valve
• Incorrect connection of 208-230V
output
connectors
Power Circuit of
O.U. PCB Failure
Yes
No
Fuse (EFR1 or EFS1)
is melted?
LED5 (red) for DC280V
applied voltage indicator
flashes.
No
Yes
Press and hold the PSW1
of O.U. PCB to change
the Check Mode.
The indication “CHEK” will be
displayed on the 7-segment.
DC280V line and
DC5V line are normal.
The voltage 13V is applied
between the test port
“VCC12” and “GND1”.
DC12V line is normal.
• Replace fuse (EFRI or EFS1).
• Replace each 208-230V load
equipment if faulty.
• Correctly connect the connectors.
Yes
LED1 (red) for DC5V
applied voltage indicator
flashes.
Replace
O.U. PCB
Microcomputer
Failure
Replace
O.U. PCB
No
Summary of Contents for YVAHP0721CW Series
Page 2: ......
Page 10: ...viii SM 16007 ...
Page 14: ......
Page 15: ...SM 16007 1 1 INSTALLATION 1 Installation ...
Page 163: ...SM 16007 2 1 OPERATION 2 Operation ...
Page 164: ...2 2 SM 16007 OPERATION Ɣ 5HIHU WR WKH 6HUYLFH 0DQXDO IRU QGRRU 8QLW RU RQWUROOHU ...
Page 165: ...SM 16007 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Page 284: ......
Page 285: ...SM 16007 4 1 MAINTENANCE 4 Maintenance ...
Page 360: ......
Page 390: ......
Page 391: ...SM 16007 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Page 400: ...6 10 SM 16007 FIELD WORK INSTRUCTIONS 0ROOLHU KDUW IRU 5 ft 3 l b ...
Page 401: ...SERVICE PARTS LIST SM 16007 7 1 7 Service Parts List ...
Page 416: ... 2016 Johnson Controls Inc SM 16007 Code No LIT 12012400 Issued November 2016 ...