3-69
Check code
Operation cause
[8d]
Reduction of No. of
connected outdoor units
1. Outdoor unit backup set up
2. Outdoor unit power supply
3. Connection error of communication cable between outdoor units
4. Connection error of BUS communication
5. Interface P.C. board error
YES
YES
YES
YES
NO
NO
NO
NO
Modify connection of communication cable.
Is backup of outdoor unit
at server being completed?
Is source power of outdoor unit
at server turned on?
Is communication
cable connected correctly
between outdoor units?
Is BUS communication
connector (CN601) of outdoor
unit at server connected?
Check interface P.C. board.
Modify connection of connector.
(BUS communication connector : CN601)
Clear the alarm,and the operation starts. (
*
1)
Turn on the power supply.
(
*
1) How to clear the alarm
Set SW01/SW02/SW03 on interface P.C. board of the master outdoor unit to 2/16/1 respectively, and
push SW04 for 5 seconds.
(Display on the 7 segment display : [Er.] [CL])