Sanyo CH2432, XHS3632, XHS2432, CH3632 Check the remote controller itself for correct operation

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4. Service procedures

Section

1

2

3

Important

Never press CL (clear) button unless you want to erase the accessed data in memory. Follow the procedure below only when erasing is necessary.

To erase accessed data, press the CL button.

When erasing is finished,“----” mark appears on the controller’s display.

CAUTION

After checking the alarm messages, be sure to press the TEST / CHK button.

(E) Check the remote controller itself for correct operation

The remote controller has a self-diagnosticfunction to check if it works properly. Use this procedure to find out if the remote controller itself is in trouble.

aTurn ON the RCU.CK switch on the back of the P.C.B. Ass’y in the remote controller. See section (A) for exact location.

bThe appearance of the display will tell you whether or not the remote controller is working correctly or not.

Normal condition – All displays appear for 10 seconds, then disappear.

Unusual condition – All displays flash ON and OFF for 10 seconds, then disappear.

CAUTION

4

After checking the panel, be sure to set the RCU.CK switch to this original OFF position.

SM830076

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Contents Split System AIR Conditioner Please Read Before Starting If Necessary, Get HelpWHO should USE this Manual Table of Contents Service Procedures Introduction Read Me First Specifications Specifications Unit Specifications PerformanceData Subject to Change Without Notice Model No Indoor Unit XHS3632 Outdoor Unit PNR-XHS3632 Specifications Major Component Specifications Indoor Unit Fan motorModel No XHS3632 Source Specifications Major Component Specifications Outdoor Unit CompressorModel No CH3632 Source Specifications Other Component Specifications Indoor Unit Model No XHS2432 Power TransformerXHS3632 Power Transformer Specifications Other Component Specifications Outdoor Unit Model No CH2432Model No CH3632 Specifications Dimensional Data Indoor Unit XHS2432 Specifications Dimensional Data Indoor Unit XHS3632 Dimensional Data Outdoor Unit CH2432 SpecificationsSpecifications Dimensional Data Outdoor Unit CH3632 Specifications Refrigerant Flow Diagram Outdoor Unit CH2432 Operating RangeIndoor Unit XHS2432 Specifications Refrigerant Flow Diagram Outdoor Unit CH3632 Indoor Unit XHS3632Processes and1.Specificationsfunctions Processes and FunctionsRoom Temperature Control Processes and functionsCooling Heating Cold Draft Prevention Heating Cycle Chart Explanations and notes Automatic Fan Speed Indoor UnitOutdoor Fan Speed Control Freeze Prevention Cooling Condensing Temperature Control Cooling Overload Protection Heating This function prevents the air conditioner from overloadingDischarge Temperature Control Cooling and Heating Auto. Mode for Automatic Heating/Cooling Switching Processes and functions Time Chart for Defrosting Defrosting Control, Outdoor Heat Exchanger Coil HeatingNormal Control Mode 11 4-Way Valve, Solenoid ControlAutomatic Restart after Power Interruption Auto Control ModeHeating Except During Defrosting Compressor Discharge Gas TemperatureElectronic Expansion Valve Fuzzy ControlCompressor Current Detection Circuit Overload ProtectionRefrigerant flow distribution control Contents and Order of controlElectronic Expansion Valve Control Fuzzy control optimal refrigerant flow rate controlVoltage Detection Control Processes and functions Electrical Data Electrical dataIndoor Unit XHS2432, XHS3632Schematic Diagram CH2432 OutdoorUnitOutdoor Unit ControllerElectric Wiring Diagram CH3632FMO1 FMO2 Electrical data Service Procedures Service proceduresTroubleshooting This section explainsCheck power supply wiring Service procedures Check before and after TroubleshootingCheck power supply Check inter-unit wiringCooling Service procedures Heating Meanings of alarm messages Controller DisplayWireless remote Controller Display Refrigerant Shortage Service procedures Symptoms and parts to inspect SM830076 0335MI Influenced by external noise Yes Start Is there connector contact defect? Correct the connection 0343MI Symptom LCD on the remote controller displays Check E15 Symptom LCD on the remote controller displays Check E16 0346MI Indoor fan does not operate Compressor motor does not operate Set service check switches Service procedures Use the test run procedure Service procedures Check the sensor temperature readings Find out about past service problems SET Temp Check the remote controller itself for correct operation Service procedures Execute the auto. address operation 0362MI 0364MI Change the shift temperature in heating mode Service procedures Set the indoor unit address Set the No. of R. C. which you want to set with , button 0371MI Service procedures Change the period of the filter timer Checking the Electrical Components Measurement of Insulation ResistanceChecking the Protective Devices Compressor motor thermal protector . . . . . . Outdoor unitService procedures Checking the Electrical Parts Power transformer TR1Motor capacitor ............ Both in indoor and outdoor unit Continuity of fuse on P.C.B. Ass’yCompressor motor CM ……… Outdoor unit Case of single -phase compressorSolenoid coil of the electronic refrigerant Compressor motor magnetic contactor 52C ………… Outdoor unitService procedures Sensor and Solenoid Layout Diagram CH2432XHS3632 Service procedures Thermistor Characteristic Curve Setting of indoor control P.C.B Service procedures C.B. SettingCentral control when using the *system controller Standard control single outdoor unitBoth OFF Set to When shipped from factory Service procedures Automatic Address Setting Method Displaying Indoor / Outdoor Unit Combination NumbersItems to Check Prior to Test Run Service procedures Test Run 100 Test Run Procedure Service procedures 12 P.C.B. and Parts Location CR-THS2432CR-CH2432 Checking procedure for each P.C.B Service procedures Check Pins Switch the pin from normal operation to check operationCentral Region
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