Defrosting Operation - Sanyo SAP–KR184GJH Technical & Service Manual

8-8. Defrosting Operation (Heating)
Reverse-cycle Defrosting
Defrosting Sequence
Heating operation
Compressor ON
4-way valve ON
Frost detection
Frosting is assumed mostly under the following condition.
Indoor heat exchanger coil temperature drops 0.8°C
per 6 minutes and it repeats 3 times in succession.
Indoor heat exchanger coil temperature drops below
certain extent.
Integrated operating time of compressor is longer
than 3 hours, etc.
Reverse-cycle defrosting operation
Compressor
Outdoor fan
4-way valve
Indoor fan
Standby lamp
Releasing of defrosting
Defrosting time is determined by the elapsed time
which vary with certain condition. (That is: indoor
fan speed, condition of frost detection etc.)
41
ON
OFF
OFF
OFF
ON