Compressor Backup Operation Setting - Toshiba MMY-MAP0804HT8-E Service Manual

9-2. 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(s).
<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.
(3) Turn on the power supply to all the units connected to the system.
This is the end of compressor backup operation setting.
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Three-compressor model
Factory default setting
When compressor No. 1 (front left) is faulty
When compressor No. 2 (front center) is faulty
When compressor No. 3 (front right) is faulty
Two-compressor model
Factory default setting
When compressor No.1 (front left) is faulty
When compressor No.2 (front right) is faulty
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SW06 SW07 SW09
1 2 3 4 1 2 3 4 1 2 3 4
SW11 SW12 SW13
1 2 3 4 1 2 3 4 1 2 3 4
SW16 SW17
1 2 3 4 1 2 3 4
SW06
Bit 1 Bit 2 Bit 3
OFF OFF OFF
ON OFF OFF
OFF ON OFF
OFF OFF ON
SW06
Bit 1 Bit 2 Bit 3
OFF OFF OFF
ON OFF OFF
OFF ON OFF
242
SW10
1 2 3 4
SW14
1 2 3 4
Bit 4
OFF
OFF
OFF
OFF
Bit 4
OFF
OFF
OFF