Sanyo CH0952, CH1852, KHS1852-S service manual Heating

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Heating

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

 

More than

3 minutes

3 minutes

3 minutes

3 minutes

3 minutes

3 minutes

 

 

5 minutes

 

 

 

 

Thermo.

Thermo.

 

Thermo.

 

 

Thermo.

 

 

 

ON

 

OFF

 

ON

 

 

OFF

set temp.

T ¡F

 

 

 

 

 

 

 

 

 

 

T – 2 ¡F

 

 

 

 

 

 

 

 

 

 

T – 4 ¡F

 

 

 

 

 

 

 

 

 

 

 

 

5 minutes

5 minutes

 

 

Room temp.

 

 

 

 

 

 

 

 

 

 

 

Compressor

OFF

 

ON

 

OFF

 

ON

 

OFF

Outdoor fan

OFF

 

ON

 

OFF

 

ON

 

OFF

 

 

 

 

30 seconds

 

 

 

 

30 seconds

Indoor fan

OFF

LL

Set speed

LL

 

Set speed

LL

 

 

 

*1

 

 

 

 

 

 

 

Standby lamp

OFF

ON

 

OFF

ON

 

OFF

ON

Indoor heat exch. coil temp.

*1

95 ¡F

 

77¡F

Solenoid coil

OFF

ON ( Reversing cycle )

(4 – way valve)

Operation button

OFF

ON

The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least 5 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 below T – 2°F (T°C is set temperature).

Compressor ON

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

NOTE

*1: Refer to "8-6 Cold Draft Prevention".

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Contents Split System AIR Conditioner Case of Improper Installation When Installing…When Connecting Refrigerant Tubing When Servicing When WiringTable of Contents Appendix Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Operating RangeSpecifications Unit Specifications12,500 Indoor unit KHS1852 Outdoor unit CH1852 Major Component Specifications Indoor UnitIndoor unit KHS1251 Indoor unit KHS1852 Outdoor Unit Outdoor unit CH0951Outdoor unit CH1251 Crank case heater 230V, 20W Other Component Specifications KHS1852Outdoor Unit CH0951 Outdoor Unit CH1251Outdoor Unit CH1852 Unit Dimensional DataIndoor unit KHS0951 / KHS1251 39-3/16 11-7/32 23/32 25/32 Remote control unit 147.5 Outdoor unit CH0951 / CH1251 Outdoor unit CH1852 Refrigerant Flow Diagram Refrigerant Flow DiagramIndoor unit KHS0951 / KHS1251 Outdoor unit CH0951 / CH1251 CH1852 Indoor unit Outdoor unitPerformance Charts Cooling CharacteristicsHeating Characteristics Performance DataIndoor inlet air Temp. ¡F ¡C 320 230 Air Throw Distance Chart Indoor Unit KHS1251 Indoor Unit KH1852 115V Single phase 60 Hz Cooling CapacitySingle phase 60 Hz 17,000 BTU/h KHS1852 Heating Capacity 100Electrical Characteristics Electrical DataIndoor Unit Outdoor Unit Complete Unit Fan Motor 047 045 113 095 Electric Wiring Diagrams To avoid electrical shock hazard, be sure to Outdoor unit CH0951 / CH1251 Outdoor unit CH1852 Printed circuit board POW-KHS095A for KHS0951 Printed circuit board POW-KHS125A for KHS1251 Printed circuit board POW-KHS095B for KHS0951 and KHS1251 Printed circuit board POW-KHS1852 for KHS1852 Top view Installation Instructions Installation Site SelectionHot air Heat source Outdoor unit Obstacle above Remote Control Unit Installation Position Mounting on a WallRemovable mounting Non-removable mountingAddress Switches Finding the Address SwitchesSwitch Positions for Up to 2 Units Remote Control UnitRecommended Wire Length and Diameter Wiring System DiagramFunction Room Temperature ControlCooling Heating Automatic Switching between Cooling and Heating Dry Operation DehumidificationFreeze Prevention Cooling Overload Prevention HeatingCold draft Prevention Heating Defrosting Flowchart Defrosting Operation HeatingLow Temperature Cutff Heating Defrosting Mode Timing ChartTroubleshooting Check before and after troubleshootingAir conditioner does not operate Circuit breaker trips or fuse blowsCheck Operation selector switch in the indoor unit Power is not suppliedNeither indoor nor outdoor unit runs Check Timer on the remote control unit Check remote control unitCheck fuse on the indoor PCB Assy Check setting temperature Only outdoor unit does not runOnly indoor unit does not run Check PCB Assy in either indoor or outdoor unitOnly indoor fan does not run Some part of air conditioner does not operateOnly flap motor does not run Only outdoor fan does not run Only compressor does not runOperation does not switch from Heat to Cool or Cool to Heat Air conditioner operates, but abnormalities are observedPoor cooling or heating Excessive cooling or heatingIndoor coil temp. thermistor TH1 is defective If a sensor is defectiveRoom temp. thermistor TH2 is defective Power Supply Wires Checking Electrical ComponentsMeasurement of Insulation Resistance Measurement of Insulation Resistance for Electrical PartsChecking Continuity of Fuse on PCB Assy Checking Motor CapacitorArrangement of Electrical Component Outdoor Unit CH0951 / CH1251 / CH1852 Electric Parts Parts Layout in UnitAppendix Features Alert Symbols ContentsProduct Information Safety Instructions Installation LocationElectrical Requirements Names of Parts Remote control receiver OFF position does not disconnect the power. Use the mainPower switch to turn off power completely Timer lampSET Temp HR. Timer button Timer on buttonTimer OFF button Button Timer on buttonCancel button Green or red AutoRed Heat Orange DRYUsing the Remote Control Unit How to Install BatteriesHow to Use the Remote Control Unit Remote Control Unit Installation PositionUsing the Remote Control Unit Mounting the Remote Control UnitAutomatic Operation Operation with the Remote Control UnitPress the ON/OFF operation button Operation with the Remote Control Unit Manual Operation Adjusting the Fan Speed Automatic Cooling and DRY mode Heating mode ManualWhen difference between Room temperature and set Temperature isNight Setback Mode Night Setback Mode is used for saving energySetting Temperature Min Press Button Heating ModeSetting Temperature Press 30 min TimePower failure during operation Clicking Sound Remote Control UnitSpecial Remarks ``DRY OperationUsing the 12-Hour on and OFF Timer Timer on mode ExampleTimer OFF mode Example Setting procedureHour OFF Timer Using the 1-Hour OFF TimerCombining the 1-Hour OFF Timer and 12-Hour on Timer Adjusting the Airflow Direction Setting the airflow manuallyHorizontal Vertical Sweep functionOperation without the Remote Control Unit Care and CleaningOperation KHS1852 Selector OperationHow to replace the anti-mold filter Anti-mold filter How to remove the anti-mold filterAir intake grille Air cleaning filter not provided KHS0951/KHS1251Tips for Energy Saving Do notRemoving and remounting WaterTroubleshooting Operating RangeFor Parts or Service Contact

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.

The Sanyo CH0952 is a compact and highly efficient wall-mounted air conditioner that is ideal for small to medium-sized rooms. One of its main features is the inverter technology, which allows the unit to adjust its cooling or heating output based on the temperature requirements of the space. This not only enhances comfort but also significantly reduces energy consumption, making it an eco-friendly choice.

The CH1852 model builds upon the advantages of the CH0952 but offers an increased capacity suitable for larger areas. Like the CH0952, it is equipped with inverter technology to maintain optimal temperatures with minimal energy use. Additionally, it features a multi-speed fan system, which allows users to select the desired airflow level for personalized comfort. The unit’s quiet operation further enhances the user experience, making it an ideal choice for bedrooms and living spaces.

The KHS1852-S model is a powerful option, designed for heavy usage in both commercial environments and larger residential spaces. It boasts advanced filtration technologies, ensuring the air quality remains high by removing dust, allergens, and other impurities from the air. The KHS1852-S is also equipped with smart technology, allowing for remote control operation via mobile applications. This feature provides additional convenience, enabling users to control their air conditioning settings from anywhere.

All three models are designed with user-friendly controls and clear displays, improving accessibility for all users. Built to last, each unit incorporates durable materials and innovative engineering that offers long-term reliability and maintenance ease.

In summary, the Sanyo CH0952, CH1852, and KHS1852-S air conditioning units exemplify state-of-the-art technology, delivering efficiency, comfort, and convenience. Their inverter technology, multi-speed fan options, advanced filtration systems, and smart control capabilities make them an excellent choice for anyone seeking effective climate control solutions. With these modern features, Sanyo continues to lead in creating efficient and user-friendly air conditioning systems.