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SiBE12-519
Control Specification
Function and Control
61
3.10
Defrost Control
Outline
Heat Pump Only
Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor
heat exchanger temperature must be more than its fixed value when finishing.
Detail
Conditions for Starting Defrost
The starting conditions must be made with the outdoor air temperature and heat exchanger
temperature. Under the conditions that the system is in heating operation, 6 minutes after the
compressor is started and more than 30 minutes of accumulated fine pass since the start of the
operation or ending the defrosting.
Conditions for Canceling Defrost
The judgment must be made with heat exchanger temperature. (4°C~12°C)
Frequency
Compressor
Four way valve
Fan
Operating room
electronic expansion
valve opening
Operation stopped room
electronic expansion
valve opening
ON
OFF
ON
OFF
ON
OFF
0Hz
5sec.
450pps
350pps
450pps
Initial opening
0pps
160pps
140pps
Initial opening
PI control
5sec.
30sec.
60sec.
530 sec.
120sec.
(R2962)
Summary of Contents for 2MKS40DVMB
Page 10: ...SiBE12 519 List of Functions 1 Part 1 List of Functions 1 Cooling Only 2 2 Heat Pump 4 ...
Page 15: ...Heat Pump SiBE12 519 6 List of Functions ...
Page 29: ...Heat Pump SiBE12 519 20 Specifications ...
Page 135: ...Instruction SiBE12 519 126 System Configuration ...
Page 211: ...Outdoor Unit SiBE12 519 202 Removal Procedure ...