Daikin FHC45BZ7V1, Руководство по обслуживанию

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General Functionality ESIE02–01
2–14 Part 2 – Functional Description
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1.9 HPS and LPS Function
Applicable units R(Y)P71-250B
Purpose HPS (High-Pressure Switch)
If the pressure at the discharge side of the compressor becomes abnormally high, the HPS stops the
unit automatically in order to prevent it from breaking down.
LPS (Low-Pressure Switch)
If the pressure at the suction side of the compressor becomes abnormally low, the LPS stops the unit
automatically in order to prevent it from breaking down.
Method The table below describes what happens in case of HPS or LPS activation.
Used input The HPS and LPS detection function uses the following inputs:
If the... is activated Then... Remark
HPS The compressor stops and
stands by for 3 min. If this is activated an additional 6 times
from the first detection and before it is
turned OFF by the remote control,
the operation stops due to malfunction.
LPS The compressor stops and
stands by for 3 min.
However, depending on the
operating conditions, the com-
pressor may not turn OFF.
Input
Connection on
indoor PCB Connection on
outdoor PCB
High-pressure switch — X9A
Low-pressure switch — X10A