Outdoor Unit Control
SiME281906E
57
Part 4 Functions and Control
4.6 Room Temperature Thermostat Control
The thermostat turns ON or OFF based on the difference between remote controller set
temperature and indoor suction temperature.
Thermostat ON conditions: when
T
+0.5°C
Thermostat OFF conditions
T = indoor suction temperature – remote controller set temperature: cooling
4.7 Starting Frequency Control
Outline
The compressor will start up with a limited fixed frequency value for a specified period of time in
order to prevent liquid back to the compressor, and to limit the starting current.
General
The normal startup control time is 2-3 minutes. The maximum starting frequency control time is
limited to 5 minutes.
OR
&
•
Δ
T
≤
–0.5˚C continuously for 1 minute
• 5 minutes or more since starting
•
Δ
T
≤
–2˚C (when cooling)
•
Δ
T
≥
+1.5˚C
→
Δ
T
≤
–0.5˚C rapid change
Model name
A
(Hz)
All outdoor units
141
A
Hz
Hz
29.5 Hz
ON
1
2-3
Time (minute)
Normal control
