Discharge Pipe Protection Control - Daikin VRV - WII Service Manual

SiUS30-604
6.3

Discharge Pipe Protection Control

This discharge pipe protection control is used to protect the compressor internal temperature
against a malfunction or transient increase of discharge pipe temperature.
∗
[INV compressor]
HTdi > 239°F
Compressor upper limit down 1 step/30 sec.
HTdi > 266°F
or
HTdi > 248°F
for 5 min.
Compressor 62Hz
Less than 2 times within
100 min.
Function
Discharge pipe protection control is carried out in each outside unit.
Normal operation
Discharge pipe
temp. control standby
HTdi :Value of INV compressor discharge pipe
HTdi < 212°F
HTdi < 230°F
Compressor upper limit up 1 step/20 sec.
HTdi > 239°F
HTdi > 275°F
or
HTdi > 248°F for 10 min. or more.
When occurring 3 times within 100 minutes,
the malfunction code "F3" is output.
Protection Control
temperature (Tdi) compensated with
outdoor air temperature
73