3-12
Service Manual
TROUBLESHOOTING
TB2
PSW5
PSW4
SEG2
PSW2
PSW3
DSW2
DSW3
DSW4
DSW5
DSW7
DSW6
LED1
RSW1
DSW1
LED3
LED4
LED5
DSW10
LED2
SEG1
PSW1
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Purpose
Symbol
PCB
Purpose
PCB1
Outdoor Unit PCB
(for Control)
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2. Processing for Sensor Input
3. Processing for DIP Switch Input
4. Operation Control for Above Items 1 to 3.
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and Overcurrent Control
5. 7-Segment Indication
6. Processing of Safety Device Input
7. Processing of Relay Output
8. Reverse Phase Detection for Power Source
PCB2
Inverter PCB
1. Inverter power part is driven by instruction of outdoor unit PCB and
compressor is driven.
2. Overcurrent Control
3. Protection Control for Inverter Part
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2. Overcurrent Control
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be found on the next page.
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 ...