Control Specification
SiSG121917E
79
Part 4 Functions and Control
For limiting lower limit:
Frequency control is carried out only when the frequency rises.
5.
Upper and lower limit of frequency by PI control
The frequency upper and lower limits are set according to the total of S values. When the
indoor unit quiet operation commands come from more than one room, or when the outdoor
unit quiet operation commands come from all the rooms, the upper limit frequency is lower
than the usual setting.
4.3 Controls at Mode Changing/Start-up
4.3.1 3-Minute Standby
Turning on the compressor is prohibited for 3 minutes after turning off.
4.3.2 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows.
A
D
E
F
B
C
(R13528)
(Hz)
Frequency
(sec.)
Time
50/65/80 class
90 class
A
(Hz)
55
35
B
(Hz)
70
65
C
(Hz)
85
80
D
(seconds)
150
100
E
(seconds)
180
500
F
(seconds)
300
200
