SM-16007
3-7
TROUBLESHOOTING
TB2
PSW5
PSW4
SEG2
PSW2
PSW3
DSW2
DSW3
DSW4
DSW5
DSW7
DSW6
LED1
RSW1
DSW1
LED3
LED4
LED5
DSW10
LED2
SEG1
PSW1
a. Control Printed Circuit Board: PCB1 (Outdoor Unit PCB)
]
Purpose
Symbol
PCB
Purpose
PCB1
Outdoor Unit PCB
(for Control)
1. Transmitting between Indoor Unit and Outdoor Unit
2. Processing for Sensor Input
3. Processing for DIP Switch Input
4. Operation Control for Above Items 1 to 3.
Compressor Operation Control, Bypass Valve Control, Fan Control
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 outdoor unit PCB to drive
compressor.
2. Overcurrent Control
3. Protection Control for Inverter Part
FANM
Fan Controller
1. DC Fan Motor Speed Control
2. Overcurrent Control
* Further explanation of this diagram can be
found on the next page.
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 ...