Discharge Pipe Temperature Control - Daikin FTXN25KEV1B Service Manual

Control Specification
3.3.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows.
(The function is not activated when defrosting.)
3.4

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 this temperature from rising further.
Detail
A (°C)
B (°C)
C (°C)
D (°C)
E (°C)
26
(Hz)
Frequency
C
B
A
A (Hz)
B (Hz)
C (Hz)
D (seconds)
E (seconds)
F (seconds)
B˚C
C˚C
D˚C
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.
Up zone The upper limit of frequency increases.
Reset zone The upper limit of frequency is canceled.
110
105
101
99
97
D E F
58
72
90
180
180
10
Control
SiBE041102_A
(sec.)
Time
(R13528)
Stop zone
A˚C
Dropping zone
Keep zone
Up zone
E˚C
Reset zone
(R14839)
Function and Control