8. FUNCTION

8-1. Room Temperature Control

Cooling

Room temperature control is obtained by cycling the compressor ON and OFF under control of the room tem- perature sensor in the remote control unit.

The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit.

Signal from remote control unit

 

 

3 minutes

3 minutes

3 minutes

3 minutes

3 minutes

3 minutes

3 minutes

 

 

 

 

Thermo.

Thermo.

 

Thermo.

Thermo.

Thermo.

Thermo.

Thermo.

 

 

 

OFF

ON

 

OFF

ON

ON

ON

OFF

 

T + 2 ¡F

 

 

 

 

 

 

 

 

 

set temp.

T ¡F

 

 

 

 

 

 

 

 

 

 

 

More than

 

 

 

 

 

 

 

 

 

 

5 minutes

 

5 minutes

3 minutes

Room temp.

 

 

 

 

 

 

 

 

 

 

Compressor

ON

OFF

ON

 

 

OFF

ON

 

OFF

Outdoor fan

ON

OFF

ON

 

 

OFF

ON

 

OFF

Indoor fan

Set speed

The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least

3 minutes. To protect the compressor from stalling out when trying to start against the high side refrigerant pres- sure, the control circuit has a built-in automatic time delay to allow the internal pressure to equalize.

As a protective measure, the control circuit switches the compressor OFF after 5 minutes or more of compressor operation.

Thermo. ON : When the room temperature is above T + 2°F (T°C is set temperature).

Compressor ON

Thermo. OFF : When the room temperature is equal to or below set temperature T°F. Compressor OFF

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Sanyo CH1852, CH0952, KHS1852-S service manual Function, Room Temperature Control, Cooling

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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