Service Manual
TROUBLESHOOTING
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Has PCB of outdoor unit
A, B, C or D been replaced?
Is the operating line
between outdoor units
connected correctly?
Incorrect of
total outdoor unit capacity
(The combination of outdoor
units is incorrect.)
Set the following
DIP switches of
replaced O.U. PCB
correctly.
DSW2, DSW3
DSW6, DSW10
Yes
Yes
No
Correctly connect
the operating line and
reset the power source.
No
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Has PCB of outdoor unit
A, B, C or D been replaced?
Is the operating line
between outdoor units
connected correctly?
Incorrect combination of
outdoor units
(Check the outdoor unit
combination again.)
Correctly connect
the operating line and
reset the power source.
Yes
No
No
Set the following
DIP switches of
replaced O.U. PCB
correctly.
DSW2, DSW3
DSW6, DSW10
Yes
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Unit A
(Main)
Unit B
(Sub)
Unit C
(Sub)
Unit D
(Sub)
Outdoor Unit
Unit A
(Main)
Unit B
(Sub)
Unit C
(Sub)
Unit D
(Sub)
Outdoor Unit
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 ...