Discharge Pipe Temperature Control - Daikin Super Multi NX FFQ25B8V1B Service Manual

SiBE121021_C
4.3.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows.
(The function is not used when defrosting.)
4.4

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 going up further.
Detail
Function and Control
(Hz)
Frequency
C
B
A
A (Hz)
B (Hz)
C (Hz)
D (seconds)
E (seconds)
F (seconds)
A
B
Discharge pipe
temperature
A (˚C)
B (˚C)
C (˚C)
D (˚C)
E (˚C)
Zone
Stop zone When the temperature reaches the stop zone, the compressor stops.
Drooping 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 F
50/52/58 class 68/75/80/90 class
55
70
85
150 120
180 200
300 470
Stop zone
Drooping
zone
C
Keep
zone
D
Reset zone
50/52/58 class 68/75/80/90 class
110
103
102
100
95
Control
Control Specification
(sec.)
Time
(R13528)
55
65
80
E
(R14266)
120
111
109
107
107
117