Service manual
Table Of Contents
- DNG DC Inverter Series
- LIST OF EFFECTIVE PAGES
- TABLE OF CONTENTS
- INTRODUCTION
- PRODUCT DATA SHEET
- RATING CONDITIONS
- OUTLINE DIMENSIONS
- PERFORMANCE DATA & PRESSURE CURVES
- AIRFLOW CURVES
- SOUND LEVEL CHARACTERISTICS
- ELECTRICAL DATA
- WIRING DIAGRAMS
- REFRIGERATION DIAGRAMS
- TUBING CONNECTIONS
- CONTROL SYSTEM
- TROUBLESHOOTING
- EXPLODED VIEWS AND SPARE PARTS LISTS
- APPENDIX A
12-9
CONTROL SYSTEM
SM DNGDCI 2-E.1 GB
12.9.2 Indoor Coil Overheating Protection
12.9.2.1 Indoor Coil Overheating Protection For DNG60
ICT
ICT Trend
Fast
Decreasing
Decreasing
No
Change
Increasing
Fast
Increasing
ICT >62 SC SC SC SC SC
60 = ICT < 62 D1 D1 D2 D2 D2
55= ICT <60 SR SR D1 D2 D2
52= ICT < 55 SR SR SR D1 D2
48= ICT < 52 Norm Norm SR SR D1
45= ICT = 48 Norm Norm Norm SR SR
ICT <45 Norm
12.9.2.2 Indoor Coil Overheating Protection For DNG72/80
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
12.9.3 Compressor Overheating Protection
12.9.3.1 Compressor Overheating Protection for DCI 60
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 Normal Stop Rise
P2 HzDown 1 Stop Rise
P3 HzDown 2 HzDown 1
Stop Compressor Stop Compressor
CONTENT