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9-10. Operational frequency control of outdoor unit
1. Outline
The operational frequency is decided by following the procedures below:
First, set the target operational frequency based on the difference between the room temperature and the set temperature.
Second, regulate the target operational frequency 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.
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The maximum frequency in COOL mode is limited according to operation hours, as shown below.
(2) Frequency change speed
During increasing frequency
During decreasing frequency
Operational frequency
MUZ-A09RV-
E1
MUZ-A12RV-
E1
10Hz to 14Hz
0.5 sec./Hz
15Hz to 79Hz
5 sec./Hz
80Hz to 150Hz
0.5 sec./Hz
Operational frequency
MUZ-A09RV-
E1
MUZ-A12RV-
E1
10Hz to 42Hz
1 sec./Hz
43Hz to 150Hz
0.5 sec./Hz
Minimum
frequency
15
15
Model
MSZ-A09RV
MSZ-A12RV
COOL (indoor fan speed : Hi)
Rating
frequency
53
82
Maximum
frequency
80
88
Minimum
frequency
16
16
HEAT
Rating
frequency
67
98
Maximum
frequency
98
115
DRY
22/27
22/27
1Hr
Time
Maximum
frequency
frequency
Rating or under-rating frequency
