Freeze Prevention; Overload Prevention - Sanyo SAP–K181AHA–S Technical & Service Manual

8-4. Freeze Prevention (Cooling)
This function prevents freezing of the indoor heat exchange coil.
When the compressor has been running for 10 minutes or more and the temperature of the indoor heat
exchange coil falls below –1°C, the control circuit stops the compressor for at least 6 minutes. The compressor
does not start again until the temperature rises above 8°C or 6 minutes has elapsed.
T+1 °C
Set temp. T °C
Indoor heat exch.
coil temp.
–1 °C
Compressor
Indoor fan
8-5. Overload Prevention (Heating)
This function prevents overheating of the indoor heat exchange coil.
When the temperature of the indoor heat exchange coil rises above 59°C, and if the indoor fan is L (low speed),
then the fan speed changes from L (low speed) to M (medium speed).
When the temperature of the indoor heat exchange coil rises above 61°C, the outdoor fan stops.
Indoor heat
exch. coil
temp. °C
Outdoor fan
Indoor fan
Compressor
Room temp.
6 minutes
More than
10 minutes
ON OFF
Set speed
61
59
52
49
ON
H or M or L
More than
10 minutes
ON ON
OFF
H H, M M, L M
ON
32
Thermo. OFF
Thermo. ON
More than
6 minutes
OFF ON
Set speed
ON