SM-16007
3-21
TROUBLESHOOTING
7-Segment Display
<Instance of Unit No. 63, Alarm Code “01”>
SEG2: Indoor Unit No. (0~63)
SEG1: Alarm Code
SEG1
Alarm Code
Indoor Unit No.
SEG2
(D) SEG1 and SEG2 are as follows.
SEG1
Alarm Code
SEG2
1
* Turn on All Indoor Units
* All the Indoor Units Connected in the Same System
During auto-addressing, the following items can be checked using the
outdoor unit's on-board 7-segment LED display
(1) Disconnection of power supply to the indoor unit.
(2) Reverse connection of the operating line between the outdoor and
indoor
units.
In this instance, "03" appears after 30 seconds
(3) Duplication of indoor unit number. See Alarm Code 35.
Outdoor Unit
Printed
Circuit Board
(PCB)
2
Turn on the Outdoor Unit
3
Auto-addressing Starts
Normal
Case
(1) The outdoor unit's on-board 7-segment LED display is not indicated.
Abnormal
Instance
(2) The outdoor unit's on-board 7-segment LED display indicates the following if there is something wrong.
(A) Alarm code will be displayed on the 7-segment LED display when an alarm is received from
an indoor unit in normal mode.
As for the following alarm codes, however, an alarm code will be displayed on the 7-segment LED
display when an alarm is detected by an outdoor unit itself.
* Alarm Code “03” (Abnormal Transmission between Indoor Unit and Outdoor Unit)
* Alarm Code “35” (Incorrect Indoor and Outdoor Unit No. Setting)
(B) Alarm code of smaller indoor unit Address No. will be displayed when alarm is received from
multiple indoor units.
(C) The following 7-segment LED display appears and flashes every 0.5 seconds.
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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 ...