8-4. Freeze Prevention (Cooling)
●
This function prevents freezing of the indoor heat exchange coil.
●
When the compressor has been running for 6 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.
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 55°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 57°C, the outdoor fan stops.
ON
ON
OFF
ON
H or M or L
H
➞
H, M
➞
M, L
➞
M
57
55
48
45
Indoor heat
exch. coil
temp.
°
C
Outdoor fan
Indoor fan
Compressor
ON
ON
ON
ON
OFF
OFF
Set speed
More than
6 minutes
6 minutes
T+1
°
C
Indoor heat exch.
coil temp.
–1
°
C
Compressor
Indoor fan
Room temp.
Thermo. OFF
Thermo. ON
Set temp. T
°
C
More than
6 minutes
More than
6 minutes
Set speed
23
