Function - Sanyo SA–93AH Technical & Service Manual

10. FUNCTION

Defrosting Flowchart in Heating
Defrosting Mode Timing Chart
Compressor
Solenoid coil
(4-way valve)
Fan motor
Outdoor heat +5 °C
exch coil
–8.5 °C
temp.
NOTE
At the beginning and end of the defrosting operation, you may hear a loud noise lasting several seconds. This is
not a malfunction. It is the sound of the 4–way valve switching and the sound of the refrigerant when the 4–way
valve changes the direction of refrigerant flow.
Compressor ON
Temperature of outdoor heat
exchanger coil is blow –8.5°C
Defrosting begins
Cold-draft prevention
Temperature of outdoor heat
exchanger coil is higher than
5°C.
Release of defrosting
Start of defrosting
ON
SET SPEED
NO
YES
NO
YES
Release of defrosting
ON
OFF
OFF
23
ON
ON
SET SPEED