Service manual

12-8
CONTROL SYSTEM
SM SX DCI 1-A.3 GB
12.7.2.2 Indoor Coil Overheating Protection For 72/80
ICT
ICT Trend
<-2 -2 -1,0,1 2 >2
ICT >62 SC SC SC SC SC
60 ≤ ICT < 62 D1 D1 D2 D2 D2
58≤ ICT <60 SR SR D1 D2 D2
56≤ ICT < 58 SR SR SR D1 D2
54≤ ICT < 56 Norm Norm SR SR D1
52≤ ICT ≤ 54 Norm Norm Norm SR SR
ICT <52 Norm
12.7.3 Compressor Overheating Protection
12.7.3.1 Compressor Overheating Protection for DCI50/60/72Z
Compressor temperature can be in one of 5 control zones (4 in protection, and 1 normal),according
to the following chart.
Normal
P1
P2
P3
Sto
p
-Com
p
resso
r
94
98
102
105
CTT
Control Status
Compressor Temperature
Increases
Else
P1 Normal Stop Rise
P2 HzDown 1 Stop Rise
P3 HzDown 2 HzDown 1
Stop Compressor Stop Compressor
CONTENT