Description of Functions and Operation
SiENBE28-901
40
Air Cooled Refrigeration Condensing Unit
4. Description of Functions and Operation
4.1
Operating Mode
[Classification of operating modes]
The table below lists all the operating modes available.
<List of operating modes>
1
There are 8 operating modes available. (This includes a mode in which the system is
stopped.)
2
Operating modes 5, 6 and 7 are INV compressor abnormal operation modes.
If operating mode is 4 or 7, the STD1 compressor may be defective.
If operating mode is 1, 2 or 5, the STD2 compressor may be defective.
3
The state in which all the compressors are stopped is operating mode 0.
Compressor
Cooling operation
(Operating Mode)
(1 compressor) (2 compressors) (3 compressors)
INV
1
k
k
k
INV+STD1
2
k
k
INV+STD1+STD2
3
k
INV+STD2
4
k
STD1
5
k
k
STD1+STD2
6
k
STD2
7
k
