Table of Contents
Advertisement
Control Specification
2.5
Freeze-up Protection Control
Outline
During cooling operation, the signal sent from the indoor unit controls the operating frequency
limitation and prevents freezing of the indoor heat exchanger. (The signal from the indoor unit is
divided into zones.)
Detail
The operating frequency limitation is judged with the indoor heat exchanger temperature.
2.6
Heating Peak-cut Control
Outline
During heating operation, the indoor heat exchanger temperature determines the frequency
upper limit to prevent abnormal high pressure.
Detail
60
13˚C
Reset zone
7˚C
Up zone
5˚C
Keep zone
3˚C
Dropping zone
0˚C
Stop zone
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.
B˚C
C˚C
D˚C
Indoor heat exchanger
thermistor 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.
A (°C)
B (°C)
C (°C)
65
56
Indoor heat exchanger
thermistor temperature
D (°C)
E (°C)
53
51
46
SiBE04-624_B
(R14746)
Control
Stop zone
A˚C
Drooping zone
Keep zone
Up zone
E˚C
Reset zone
(R13532)
Control
Function and Control
Advertisement
Table of Contents
