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2-8. 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 tem-
perature.
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.
2. Maximum/minimum frequency in each operation mode.
Unit: Hz
Applied model
COOL HEAT (MUZ)DRY
Minimum
frequency
Maximum
frequency
Minimum
frequency
Maximum
frequency
Minimum
frequency
Maximum
frequency
MUZ-A09 32 70 32 76 32 57
MUZ-A12 32 73 32 71 32 57
MUZ-A15
MUY-A15
10 82 15 93 10 68
MUZ-A17
MUY-A17
10 87 15 93 10 68
MUZ-A24
MUY-A24
15 110 15 108 15 102
MUZ-FD09 10 52 10 100 10 41
MUZ-FD12 10 62 10 100 10 41
MUZ-D30 20 84 20 87 20 83
MUY-D36 20 79 — — 20 79
MUZ-D36 20 91 20 94 20 83
MUY-D36 20 92 — — 20 79
The operation frequency in COOL mode is restricted by the upper limit frequency after 1 hour or 0.5 ~ 1 hour as
shown below for dew prevention.
It is rated frequency or less.
Maximum
frequency
1 hour
or
0.5~1 hour
Upper limit
frequency
Rated frequency or less
Time