Control Specification
SiUS121630EA
86
Functions and Control
4.4.5 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.)
4.5
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.
Details
18 class
24/36 class
A
(Hz)
55
35 ~ 55
B
(Hz)
65
48 ~ 65
C
(Hz)
80
70 ~ 80
D
(seconds)
180
120
E
(seconds)
360
200 ~ 500
F
(seconds)
400
180 ~ 470
A
D
E
F
B
C
(R13528)
(Hz)
Frequency
(sec.)
Time
Zone
Control
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.
18 class
120˚C (248˚F)
103˚C (217.4˚F)
102˚C (215.6˚F)
100˚C (212˚F)
95˚C (203˚F)
24/36 class
120˚C (248˚F)
111˚C (231.8˚F)
109˚C (228.2˚F)
107˚C (224.6˚F)
107˚C (224.6˚F)
A
B
C
D
E
Reset zone
Stop zone
Dropping
zone
Keep
zone
(R14266)
A
C
D
E
B
Discharge pipe
temperature
