Fisher FSAI-Pro-91AE2 Service Manual page 35

The auto fan acts as below rules:
8.4.2.4 Condenser temperature protection
---55℃<T3<60℃, the compressor frequency will decrease to the lower level until to F1 and then runs
at F1.If T3<54℃, the compressor will keep running at the current frequency.
---T3<52℃, the compressor will not limit the frequency and resume to the former frequency.
---T3>60℃ for 5 seconds, the compressor will stop until T3<52℃.
8.4.2.5 Evaporator temperature protection
---T2<0℃, the compressor will stop and restart when T2
---0℃≦T2<4℃, the compressor frequency will be limited and decreased to the lower level
---4℃≤T2≤7℃, the compressor will keep the current frequency.
---T2>7℃, the compressor frequency will not be limited.
T1-Ts
6.0
a
5.0
b
4.0
c
2.5
d
1.0
H
(H -L)*0.75+L
(H -L)*0.5+L
(H -L)*0.25+L
L
e
>=
5℃.
35