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Backup Operation
Compressor Backup Operation Setting
<Outline>
If a fault occurs to one of the compressors installed in outdoor unit, follow the procedure described below to
back up the faulty compressor by using the remaining, normal compressor.
<Work Procedure>
(1) Turn off the power supply to all the outdoor units connected to the system.
(2) Set the DIP switches of SW06, provided on the interface P.C. board of the outdoor unit with the faulty
compressor, as shown in the table below.
SW06
Bit 1 Bit 2 Bit 3 Bit 4
When compressor No.1 (front left) is faulty ON OFF OFF OFF
When compressor No.2 (front right) is faulty OFF ON OFF OFF
Factory default setting OFF OFF OFF OFF
123 4 123 4 123 4 123 4
123 4 123 4 123 4 123 4
SW06 SW07 SW09 SW10
SW11 SW12
123 4 123 4
SW16 SW17
SW13 SW14
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