Discharge Pipe Temperature Protection Control - Daikin Super Multi Plus E-Series FTXG25EV1BW Service Manual

Protection Control
4.3

Discharge Pipe Temperature Protection Control

This discharge pipe temperature protection control is used to protect the compressor internal
temperature against a malfunction or transient increase of discharge pipe temperature.
[Compressor]
HTdi > 115˚C
or
Tp > 135˚C
Upper limit frequency:
1-step down from current
compressor frequency
HTdi > 115˚C
or
Tp > 135˚C
HTdi > 130˚C
HTdi > 120˚C
or
for 90 sec. or
more.
36 Hz Unload
90
Discharge pipe temperature
protection control not limited
&
After 30 sec.
Discharge pipe temperature
protection control
or
Discharge pipe
temperature standby
HTdi : Value of discharge pipe temperature (Tdi)
compensated with outdoor temperature
Tp : Value of compressor port temperature
calculated by Tc and Te, and suction
superheated degree.
HTdi < 100˚C
Tp < 110˚C
HTdi < 110˚C
&
Tp < 125˚C
After 20 sec.
HTdi > 135˚C
HTdi > 120˚C for 10 min. or more.
When occurring 3 times within 100 minutes,
the error code "F3" is output.
SiBE18-821_C
Upper limit frequency: 1-step up
from current compressor frequency
(R12930)
Function