Fisher FSAI-Pro-91AE2 Service Manual page 32

8.4.2 Cooling Mode
8.4.2.1 Compressor running rules
The maximum operation frequency of compressor after starting submits to following rule.
Meanwhile, the maximum frequency is limited by the indoor fan speed.
Indoor fan speed
High speed / turbo function
Silent mode
If users switch on AC by remote controller, the compressor will run at the Fmax frequency for 7
minutes according to the outdoor ambient temp. During the 7 minutes, the frequency limitation is active.
7 minutes later, the compressor running frequency will be controlled as below:
T4
50
49
45
44
41
40
33
32
30
29
22
20
Fmax=T4FREMAX7
Fmax=T4FREMAX1
Fmax=T4FREMAX2
Fmax=T4FREMAX3
Fmax=T4FREMAX4
Fmax=T4FREMAX5
Fmax=T4FREMAX6
Maximum frequency
No limit
Fixed at F3
32