Electrical Control Function
122 Electrical Control System
a
b
c
d
5.0
4.0
2.5
1.0
6.0
T1-Ts
e
H
(H-L)*0.75+L
(H-L)*0.5+L
(H-L)*0.25+L
L
For Compact cassette(12K),A5(12K),Ceiling& floor(12K):
In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low, auto and
silent.
The auto fan:
3.5
3.0
High
Low
1.0
Medium
1.5
For other models:
5.0
4.0
High
Low
2.0
Medium
3.0
1.3.2.4 Evaporator low temperature T2 protection.
For 12K models：
---T2<0℃, the compressor will stop and restart when T2
>=5℃.
---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.
For other models: When T2<2℃ and lasts for 3 minutes, the indoor has no capacity demand and resume till
T2≥7℃.
1.3.2.5 Condenser high temperature T3 protection
For 12K models :
---55℃<T3<60℃, the compressor frequency will decrease to the lower level until to F1 and then runs at F1.If
T3<55℃, the compressor will keep running at the current frequency.
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