Sanyo CH2472, CH1872 service manual Follow the steps below when the generator has become dirty

Page 84

 

 

Care and Cleaning (continued)

Air Clean Filter

The air clean filter removes dust and dirt from the air, and reduces odors and smoke from

 

tobacco.

 

This air clean filter cannot remove harmful gases or vapors nor ventilate air in the

 

room. You must open doors or windows frequently when you use gas or oil heating

 

appliances. Otherwise there is a risk of suffocation in extreme cases.

How to install the air

The air clean filter needs to be installed behind the air intake grille.

clean filter

1.

Remove the air intake grille.

 

2.

Install the air clean filter in the position

 

 

shown in the figure.

 

3.

Remount the air intake grille.

How to clean the air clean filter

NOTE

Cleaning the main unit and remote control unit

Removing and remounting the air intake grille

CAUTION

Washing the grille with water

Air clean filter

In general, the filter should be sucked to remove dust in low fan speed of a vacuum cleaner once every three months.

If there is heavily grime on the filter, soak the filter in lukewarm water with neutral detergent diluted 1:500 for 1 to 2 minutes then wash it.

Rinse the filter in clean water, then let it dry on the towel in room temperature.

Do not bend nor give excessive force onto the air clean filter.

If the filter surface is heavily blocked with dirt or damaged, replace it with new one. Purchase a replacement filter at your local dealer. (model STK-FDXB)

Wipe clean using a soft, dry cloth.

To remove stubborn dirt, moisten a cloth in warm water no hotter than 104 °F, wring thoroughly, and then wipe.

The air intake grille can be removed in order to wash it with water.

Refer to “How to remove the anti-mold filter” and “How to replace the anti-mold filter” on page 23.

When using a footstool or the like, be careful not to let it tip over.

Clean the grille gently using a soft sponge, or the like. Then wipe away any remaining moisture.

Neutral detergent may be used to remove stubborn dirt. Then rinse thoroughly with water and wipe away any remaining moisture.

Cleaning the negative ion generator

Follow the steps below when the generator has become dirty.

For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.

Remove the dust on the negative ion generator.

Use a toothbrush, etc. to dust off the end.

Use a cotton swab, etc., to clean around the generator inside the plastic case, taking care not to touch the electrodes.

Negative ion generator (metal electrodes inside plastic case)

NOTE

During use, the negative ion generator and other metal parts may become discolored: this is normal and not indicative of malfunctioning.

If the dirt on and around the negative ion generator is left to build up, a puffing or sputtering sound will eventually be heard. In this case, clean the generator immediately.

Do not apply excessive force while performing maintenance.

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OI-801-24-EG

 

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Contents DC Inverter Split System AIR Conditioner Indoor Model No. Product Code NoPlease Read Before Starting Table of Contents Checking Electrical Components Operating Range Indoor Air Intake Temp Outdoor Air Intake TempSpecifications Unit SpecificationsKHS1872 CH1872208V KHS2472 CH247212.1 13.5 Major Component Specifications Indoor UnitCB-KHS2472 Microprocessor 250V 3A Outdoor Unit Outdoor Unit CH1872Compressor External FinishOutdoor Unit CH2472 Other Component Specifications Indoor heat exchanger sensorCompressor temp sensor Outdoor air temp sensorDimensional Data Indoor Unit KHS187211-17/32 23-15/16 35-7/16900 Refrigerant Flow Diagram Refrigerant Flow DiagramInsulation of Refrigerant Tubing After a tube has been insulated To break or crackTemperature Charts Low pressure performance chartOperating current performance chart Indoor discharge air performance chartHigh pressure performance chart Wide 73F Power Supply 230V Single Phase 60Hz Cooling Capacity Cooling Capacity24,200 BTU/h Cooling Capacity Low Ambient Indoor Outdoor24,200 BTU/h Power Supply 230V Single Phase 60Hz Heating Capacity Heating CapacityTH Total Heating Capacity BTU/h 29,000 BTU/h Air Throw Distance Charts Cooling Vertical distance ftRoom air temp F 26.7C Fan speed High Horizontal distance ft Heating Vertical distance ftHeating Electrical Characteristics Electrical DataCH1872 Voltage230V Cooling Voltage208V CoolingCH2472 Voltage230V Cooling Electric Wiring Diagrams Indoor Unit KHS1872 KHS24728FA2-5257-70500-0 WHT WHT YEL YEL Maintenance Address Setting of the Remote Control UnitButton Operation HR.TIMER button ACL Reset button How to Disconnect How to ConnectFunctions Operation FunctionsEmergency operation Auto cooling/heating operationTimer backup Lamp colorsCompressor discharge temperature control Protective FunctionsOverload prevention during heating Freeze preventionDefrost detection and release CT Peak current cut-off controlReverse-Cycle Defrosting Troubleshooting Precautions before Performing Inspection or RepairMethod of Self-Diagnostics Self-diagnostics Lamps Normal Replace the controllerReplace the circuit board or the fuse Using the TEST/T-RUN terminals Checking the Indoor and Outdoor UnitsChecking the indoor unit Control Check items unit operation Serial Communication Error Identification Procedure Off Blinking IlluminatedBefore the Operation Condition E01Terminal board Outdoor Unit Condition E12 Trouble Diagnosis of Fan Motor Indoor Fan MotorOutdoor Fan Motor Noise Malfunction and Electromagnetic Interference Noise malfunctionElectromagnetic interference Locations most susceptible to noise Trouble CorrectionPower Supply Cord Checking Electrical ComponentsMeasurement of Insulation Resistance Measurement of Insulation Resistance for Electrical PartsChecking Continuity of Fuse on PCB Assy Refrigerant R410A Special Precautions When Servicing Unit Characteristics of New Refrigerant R410AWhat is New Refrigerant R410A? CharacteristicsChecklist before Servicing Tubing Installation Procedures Tools Specifically for R410AProcedure for Replacing Compressor Case of Compressor MalfunctionNever charge a large amount Unit. This may causeDamage to the compressor ExampleCase Refrigerant is Leaking Welding leaking pointsRecharging When Tubes are Extended Charging Additional RefrigerantRetro-Fitting Existing Systems Use of Existing UnitsOI-852-6-4180-801-00-2 Features Contents Alert SymbolsProduct Information Installation Location Safety InstructionsElectrical Requirements Names of Parts Unit Display and Operation Button Quiet lampRemote Control Unit Display Remote Control Unit HR. Timer buttonAdvance button TransmitterQuiet button FAN Speed selector buttonUsing the Remote Control Unit Temperature Display SelectorHow to Install Batteries Button Time Display Selector buttonUsing the Remote Control Unit Operation with the Remote Control Unit Press the ON/OFF operation buttonOperation with the Remote Control Unit Press the Mode selector button and select the desired modePress the TEMP. setting buttons to change the temperature Set the FAN Speed selector button to the setting you wantAdjusting the Fan Speed Cooling and DRY Mode Night Setback Mode is used for saving energyQuiet Mode Special Remarks Setting the Timer Example To set to 1030 pmOperation Indication Setting the Timer How to set the on time Example To start operation at 710 amTo cancel a timer program Press the Cancel button 1030 pm 710 am 1100 am Present timeUsing the 1-Hour OFF Timer Setting procedureCancellation procedure Operation together with the Daily ON/OFF Repeat TimerAdjusting the Airflow Direction Setting the airflow manuallyHorizontal Sweep functionOperation without the Remote Control Unit Care and CleaningWhen the air conditioner is not running Care and Cleaning CleaningGrasp both ends of the air Intake grilleFollow the steps below when the generator has become dirty Negative ion generator metal electrodes inside plastic caseTroubleshooting Operating RangeTrouble Possible Cause Remedy Max DB / 71 F WB Min DB / 57 F WBAppendix B Installation Instructions Installation Instructions ContentsPlease Read Before Starting Tools Required for Installation not supplied Accessories Supplied with Unit TableGeneral Optional Copper Tubing KitInstallation Site Selection Additional Materials Required for InstallationSolid base must not cover the hole of the bottom plate How to Install the Indoor Unit Trical wiring or conduits areRemove the Rear Panel from the Unit Make a HoleInstall the Rear Panel on the Wall If Wooden WallIf Block, Brick, Concrete or Similar Type Wall Remove the Grille to Install the Indoor Unit How to remove the grilleHow to replace the grille Wiring Instructions General precautions on wiring Shape the Indoor Side TubingRecommended Wire Length and Diameter AWGWiring Instructions for Inter-unit Connections How to connect wiring to the terminal For Indoor Unit For Outdoor Unit For solid core wiring or F-cableFor stranded wiring Mounting Right-side tubingSwitching drain hose and drain cap Left-side tubingDrain cap Do not supply power to Tubing and wiring to the outTo unmount indoor unit Unit or operate it until allHow to Install the Outdoor Unit First refer to . Installation Site SelectionWiring Instructions for the Outdoor Unit Flaring Procedure with a Flare Tool To 0.5 mm Adjust so that the amount of tubeRefrigerant Tubing Use of the Flaring MethodConnecting Tubing between Indoor and Outdoor Units Finishing the InstallationInsulation of Refrigerant Tubing To prevent heat loss and wet floors due to dripping of conAir Purging Be sure to completely insert Hex wrench beforeAttempting to turn the valve How to Test Run the Air Conditioner Basic Functions of the Service Valves When opening or clos Ing the service valveStem, use the accessory Pump DownRemote Control Unit Installation Position Mounting on a WallAddress Switch Address Setting of the Remote Control Unit