SiENBE04-401A
Control Specification
Function and Control
65
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 44 minutes of accumulated time 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~22°C)
(A)RK(X)S models
(A)RK(X)H, R(Y)N models
ON
OFF
ON
OFF
ON
OFF
0Hz
5sec.
350pps
450pps
450pps
PI contro
5sec.
50sec.
50sec.
600sec.
60sec.
(R4014)
Electronic expansion
valve opening
Frequency
Compressor
Four way valve
Fan
Initial opening
ON
OFF
ON
OFF
ON
OFF
0Hz
5sec.
450pps
450pps
450pps
PI control
5sec.
45sec.
55sec.
480sec.
60sec.
(R4015)
Electronic expansion
valve opening
Frequency
Compressor
Four way valve
Fan
Initial opening
PI control
Summary of Contents for FTKS20CVMB
Page 19: ...List of Functions SiENBE04 401A 10 List of Functions...
Page 45: ...Specifications SiENBE04 401A 36 Specifications...
Page 81: ...Control Specification SiENBE04 401A 72 Function and Control...
Page 111: ...Instruction SiENBE04 401A 102 System Configuration...
Page 155: ...Check SiENBE04 401A 146 Service Diagnosis...
Page 225: ...Outdoor Unit RK X H C ARK X H C R Y N C SiENBE04 401A 216 Removal Procedure...
Page 229: ...Others SiENBE04 401A 220 Others...