Delta PG-35 Service Manual Page 51

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11-6
CONTROL SYSTEM
SM DELTA 1-E.2 GB
11.7.2 Indoor Coil over Heating Protection
ICT
ICT Trend
Fast
Decreasing
Decreasing No Change Increasing
Fast
Increasing
ICT > 55
SC SC SC SC SC
53 < ICT ≤ 55 D1 D1 D2 D2 D2
49 < ICT ≤ 53 SR SR D1 D2 D2
47 < ICT ≤ 49 SR SR SR D1 D2
45 < ICT ≤ 47 Norm Norm SR SR D1
43 < ICT ≤ 45 Norm Norm Norm SR SR
ICT ≤ 43 Normal
11.7.3 Compressor over Heating Protection
Compressor temperature can be in one of 5 control zones (4 in protection, and 1 normal),
according to the following chart.
Control Status
Compressor
Temperature Increases
Else
P1 Norm SR
P2 D1 SR
P3 D2 D1
Stop Compressor SC
Normal
P1
P2
Stop-Compresor
CTTOH1
CTTOH2
CTTOH3
CTTOH4
CTT
P3
CONTENT
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