SiBE01-503 Control Specification
Functions and Control 25
3.8 Defrost Control
Outline In heating, defrosting is carried out by the cooling cycle (reverse cycle) to prevent the outdoor
heat exchanger being frosted. The defrosting time or outdoor heat exchanger temperature must
be more than its fixed value when finishing.
Detail Time chart for 35 class
Compressor
Heating Defrosting Heating
Four way valve
Outdoor unit fan
Indoor unit fan
ON
OFF
ON
OFF
ON
OFF
ON
OFF
73sec.
86sec. 86sec.
Hot start function
73sec.
(R4734)