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 30°F, the control circuit stops the compressor for at least 6 minutes. The compressor does not start again until the temperature rises above 46°F or 6 minutes has elapsed.

Thermo. OFF

 

Room temp.

 

 

 

Thermo. ON

T + 4 ¡F

 

 

 

 

 

 

Set temp. T ¡F

 

 

 

 

 

 

Indoor heat exch.

 

 

 

 

More than

 

 

6 minutes

 

 

6 minutes

 

coil temp.

 

 

 

 

 

 

 

 

 

 

30 ¡F

More than

 

 

More than

 

 

 

 

 

 

 

 

10 minutes

 

 

10 minutes

 

 

Compressor

ON

OFF

ON

ON

OFF

ON

Indoor fan

 

Set speed

 

 

Set speed

 

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 139°F, 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 141°F, the outdoor fan stops.

141

139

Indoor heat

exch. coil temp. ¡F 126

120

Outdoor fan

ON

OFF

ON

Indoor fan

H or M or L

H H, M M, L M

Compressor

ON

50

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Sanyo CH1852, CH0952, KHS1852-S service manual Freeze Prevention Cooling, Overload Prevention Heating

KHS1852-S, CH0952, CH1852 specifications

The Sanyo CH0952, CH1852, and KHS1852-S are innovative and versatile air conditioning units designed to deliver efficient cooling and heating solutions for both residential and commercial applications. These models stand out in the market for their advanced technologies, energy efficiency, and user-friendly features.

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