Discharge Pipe Temperature Control - Daikin CTXS07LVJU Service Manual

Control Specification
3.4.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows.
(The function is not used when defrosting.)
3.5

Discharge Pipe Temperature Control

Outline The discharge pipe temperature is used as the internal temperature of the compressor. If the
discharge pipe temperature rises above a certain level, the upper limit of frequency is set to keep
the discharge pipe temperature from rising further.
Detail
64
(Hz)
Frequency
C
B
A
A
B
Discharge pipe
temperature
Zone
Stop zone When the temperature reaches the stop zone, the compressor stops.
Dropping zone The upper limit of frequency decreases.
Keep zone The upper limit of frequency is kept.
Reset zone The upper limit of frequency is canceled.
D E
All outdoor units
A (Hz) 26
B (Hz) 48
C (Hz) 70
D (seconds) 120
E (seconds) 500
F (seconds) 180
Stop zone
Dropping
zone
Keep
zone
Reset zone
All outdoor units
A 120˚C (248˚F)
B 111˚C (231.8˚F)
109˚C (228.2˚F)
C
D 107˚C (224.6˚F)
107˚C (224.6˚F)
E
The same value continues.
Control
(sec.)
Time
F
(R13528)
C
D
E
(R14266)
Function and Control
SiUS121602E