Service manual

Control Specification SiBE061121_A
44 Function and Control
3.3.4 3-minute Standby
Turning on the compressor is prohibited for 3 minutes after turning it off.
(Except when defrosting.)
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 the discharge pipe temperature from rising further.
Detail
25/35 class 50 class
A (Hz) 48 55
B (Hz) 64 70
C (Hz) 88 85
D (seconds) 240 120
E (seconds) 360 200
F (seconds) 180 470
(sec.)
Time
(R13528)
(Hz)
Frequency
C
B
DEF
A
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.
Up zone The upper limit of frequency increases.
Reset zone The upper limit of frequency is canceled.
25/35 class 50 class
A (°C) 110 110
B (°C) 105 103
C (°C) 101 101.5
D (°C) 99 100
E (°C) 97 95
(R14642)
Discharge pipe
temperature
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
E˚C
A˚C
B˚C
C˚C
D˚C