Mitsubishi Electric MSZ-G09SV-E1 Service Manual page 36

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.
Applied
model
-
MSZ-G09SV
E1
-
MSZ-G09SV
E2
-
MSZ-G12SV
E1
-
MSZ-G12SV
E2
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.
Maximum
frequency
Frequency
1Hr
(2) Frequency change speed
During increasing frequency
Operational frequency
10Hz~14Hz
15Hz~79Hz
80Hz~150Hz
During decreasing frequency
Operational frequency
10Hz~42Hz
43Hz~150Hz
COOL
rating
minimum
frequency
frequency
79
45
15 85
Rating or under rating frequency
minimum
maximum
frequency
frequency
45
92
15
105
Time: T
-
MUZ-G09SV MUZ-G12SV
E1
-
MUZ-G09SV MUZ-G12SV
E2
0.5 sec./Hz
10 sec./Hz
0.5 sec./Hz
-
MUZ-G09SV MUZ-G12SV
E1
-
MUZ-G09SV MUZ-G12SV
E2
1 sec./Hz
0.5 sec./Hz
36
HEAT
rating maximum
frequency frequency
95 105
96 125
-
E1
-
E2
-
E1
-
E2
DRY
45
30