SiUS04-702 Control Specification (15/18/24 Class)
Function and Control 51
4.3.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows.
(The function must not be used when defrosting.)
4.4 Discharge Pipe Temperature Control
Outline The discharge pipe temperature is used as the compressor's internal temperature. If the discharge
pipe temperature rises above a certain level, the operating frequency upper limit is set to keep this
temperature from going up further.
Detail Divide the Zone
Management within the Zones
FCG 3
FCG 2
FCG 1
85
70
55
Zone Control contents
Stop zone When the temperature reaches the stop zone, stop the compressor and
correct abnormality.
Drooping zone Start the timer, and the frequency will be drooping.
Keep zone Keep the upper limit of frequency.
Return / Reset zone Cancel the upper limit of frequency.
Keep zone
(R5470)
A
B
C
D
230
217.4
215.6
213.8
A˚F
B˚F
C˚F
D˚F
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