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Service Manual
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Is amount of refrigerant correct?
Yes
Yes
Is outdoor stop valve open?
Is refrigerant leaking?
Check electric wiring and refrigerant
piping between indoor and outdoor
units are correctly connected.
Check the indoor expansion valve during cooling
and the outdoor expansion valve during heating.
Open the stop valve.
Correctly charge refrigerant.
Repair leaks.
No
No
Yes
Is suction pressure sensor normal?
Replace suction pressure sensor
if faulty.
No
No
Yes
Are electronic expansion valves
fully closed and locked?
Check connection of
connectors, O.U. PCB and
electronic expansion valves.
Replace them if faulty.
No
Yes
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Summary of Contents for YVAHP072B31S
Page 2: ......
Page 10: ...viii Service Manual ...
Page 16: ......
Page 17: ...Service Manual 1 1 INSTALLATION 1 Installation ...
Page 577: ...Service Manual 1 561 INSTALLATION 9 Touch Back to return to the Service Menu screen 9 ...
Page 920: ......
Page 921: ...Service Manual 2 1 OPERATION 2 Operation ...
Page 1315: ...Service Manual 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Page 1461: ...Service Manual 4 1 MAINTENANCE 4 Maintenance ...
Page 1728: ......
Page 1729: ...Service Manual 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Page 1738: ...6 10 Service Manual FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A ft 3 l b ...
Page 1739: ...SERVICE PARTS LIST Service Manual 7 1 7 Service Parts List ...
Page 1795: ......
Page 1796: ... 2015 Johnson Controls Inc SM 15001 ...