1-10
TROUBLESHOOTING
1 Turn on All Indoor Units All the Indoor Units Connected to the Outdoor Unit
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 case, "03" appears after 30 seconds.
(3) Duplication of indoor unit number. See Alarm Code 35.
Outdoor Unit
Printed
Circuit Board
PCB1
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.
continues to flash after 30 seconds.
Abnormal
Case
(2) The outdoor unit's on-board 7-segment LED display indicates as follows if there is something wrong.
(A) The indoor units are not
supplied with power.
(B) Disconnection of the
operating line between the
outdoor and indoor units.
(C) Duplicated settings of the indoor unit number DIP switch DSW1 (Refer to the description of
alarm code "35", in the item 1.2.2, "Troubleshooting by Alarm Code".)
continues to flash after 30 seconds.
1.1.3 Checking by 7-Segment Display
(1) Simple Checking by 7-Segment Display
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