Discharge Pipe Temperature Protection Control - Daikin SkyAir Service Manual

Expansion Valve Regulating Functions
5.3

Discharge Pipe Temperature Protection Control

Outline The expansion valve opening will be controlled in order to avoid abnormal high compressor
discharge temperatures (see also compressor operating frequency control).
Details
80
RZQ71~140C7, RZQS71~140C7V1B
Td>95˚C
Electronic expansion valve opening
degree lower limit
+5 pulses/Cooling for 2 minutes &
heating for 1 minute
Td>100˚C
Electronic expansion valve opening
degree lower limit
+10 pulses/Cooling for 2 minutes &
heating for 1 minute
Normal control
Td<90˚C
Electronic expansion valve opening
degree lower limit
-5 pulses/Cooling for 2 minutes &
heating for 1 minute
Td: Compressor discharge pipe temperature (˚C)
SiBE28-804
Td<80˚C
Functional Description