9-2. Compressor Backup Operation Setting
<Outline>
If a failure occurs to one of the compressors installed in outdoor unit, follow the procedure described below to
back up the failured compressor by using the remaining, normal compressor.
Note: The backup operation of compressor cannot be done for MMY-MUP0801*, MMY-MUP1001*,
MMY-MUP1201*, MMY-MUP1401*, MMY-MUP14A1*, MMY-MUP1601*, MMY-MUP1801*
and MMY-MUP2001*, because only one compressor is installed in t
hese models.
<Work Procedure>
(1) Turn off the power supply to all the outdoor units connected to the system.
(2) Set the DIP switches of SW103, provided on the interface P.C. board of the outdoor unit with the failure
compressor, as shown in the table below.
SW103
Bit 1 Bit 2 Bit 3 Bit 4
Factory default setting
When compressor No.1 (front left) is failured
When compressor No.2 (front right) is failured
OFF
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
%0%0%0%0%0
%0
10
10
10
10
10
10
+%
+%
59 59 59
2
10
0%0%0%
(
(
%0
%0
%0 %0
%0 %0
%0%0 %0
%0%0
59
59
59
59
59
59
59
%0
..
%0
%0
%0
%0
59 59 59
%0
%0
7 7 7 7
7X 7J7X 7J 7E 7E
5*+'.&5*+'.&
5*+'.&
7 7
5*+'.&
SW101
ON
1234
SW102
ON
1234
SW103
ON
1234
SW104
ON
1234
SW105
ON
1234
SW107
ON
12
To Next Page
Loading...
Need help?
General
