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9-9. Operational frequency control of outdoor unit
1. Outline
The operational frequency is as following:
First, the target operational frequency is set based on the difference between the room temperature and the set temper-
ature.
Second, the target operational frequency is regulated by discharge temperature protection, high pressure protection,
electric current protection and overload protection and also by the maximum/minimum frequency.
(1) Maximum/minimum frequency in each operation mode.
w
The maximum frequency in COOL mode varies according to operation hours as shown below.
w
However, it is under rating frequency when indoor fan speed is set to MANUAL Low or AUTO Low.
Applied
model
MSZ-G09SV -
MSZ-G09SV -
E2
E1
Minimum
frequency
Rating
frequency
Maximum
frequency
Minimum
frequency
Rating
frequency
Maximum
frequency
45
COOL
HEAT
79
92
45
95
105
DRY
45
MSZ-G12SV -
MSZ-G12SV -
E2
E1
15
85
105
15
96
125
30
1Hr
Time: T
Maximum
frequency
Frequency
Rating or under rating frequency
(2) Frequency change speed
During increasing frequency
During decreasing frequency
Operational frequency
MUZ-G09SV
-
MUZ-G12SV
-
MUZ-G09SV
-
MUZ-G12SV
-
E2
E2
E1
E1
10Hz~14Hz
0.5 sec./Hz
15Hz~79Hz
10 sec./Hz
80Hz~150Hz
0.5 sec./Hz
Operational frequency
MUZ-G09SV
-
MUZ-G12SV
-
MUZ-G09SV
-
MUZ-G12SV
-
E2
E2
E1
E1
10Hz~42Hz
1 sec./Hz
43Hz~150Hz
0.5 sec./Hz
OB245 --2qxp 02.10.22 4:12 PM Page 44