Daikin RZQ125B7W1B [101/326] Pump down residual operation

Daikin RZQ125B8V3B [101/326] Pump down residual operation
ESIE05-03 General Functionality
Part 2 Functional Description 2–17
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2
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5
1
1.12 Pump Down Residual Operation
Outline The unit will conduct a pump down residual operation after each compressor stop command.
Purpose of this function is to collect the refrigerant in the liquid receiver and outdoor heat exchanger
in order to prevent liquid refrigerant from remaining in the indoor heat exchanger.
Parameters
Graph
Ending condition
* Low pressure value is calculated in case of RZQ100~140B.
RZQ71B RZQ100~140B
Compressor 38 Hz 52 HZ
Expansion valve 65 to 0 pulses
(RZQ71: after 20 seconds, RZQ100~140: after 10 seconds)
RZQ71 RZQ100~140
OR
30 seconds have elapsed since start of
residual operation
10 seconds have elapsed since start of
residual operation
LP < 2 bar (in cooling*)
OR
LP < 1 bar (in heating*)
--- LPS is activated
ESIE05-03.book Page 17 Wednesday, April 6, 2005 4:09 PM

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