SM-16007
TROUBLESHOOTING
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Is there leak from
solenoid valve (SVA)?
Is low pressure sensor normal?
Check that indoor/outdoor intake
air temperature is not too high.
No
No
Yes
Yes
Is the reversing valve internal
slide not fully shifted?
Replace low pressure sensor
if faulty.
Replace solenoid valve (SVA)
if faulty.
Replace reversing valve if faulty.
No
Yes
Cause
Check Item
Action
(Turn OFF Main Switch)
Event
Excessively
Increase
Low Suction
Pressure
Check outlet pipe temp.
of solenoid valve (SVA).
Check connecting wires.
Replace solenoid valve
(SVA) if faulty.
Leakage from Solenoid
Valve (SVA)
Measure suction gas
pipe temp. of reversing
valve.
Replace reversing valve
if faulty.
Valve Stoppage at Middle
Position of Reversing Valve
Check connectors
of O.U. PCB and
power source.
Replace sensor if faulty.
Abnormal Suction
Pressure Sensor
Check indoor unit and
outdoor unit suction
air temp. thermistor.
Replace thermistor
if faulty.
Excessively High Indoor
Unit and Outdoor Unit
Suction Air Temperature
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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 ...