Sanyo XHS2432, XHS3632, CH2432, CH3632 service manual Service Procedures, Service procedures

Page 53

 

4. Service procedures

 

4. SERVICE PROCEDURES

 

4-1 Troubleshooting

54

(1)

Check before and after Troubleshooting

55

(2)

General Troubleshooting Flow Chart: Diagnosis and Remedy

56

(3)

Meanings of alarm messages

58

(4)

LED Indication on the Outdoor Unit’s P.C.B. Ass’y

60

(5)

Symptoms and parts to inspect

61

(6)

Procedures When a Specific Component Does Not Work

71

(7)

Service Functions of Optional Wired Remote Controller

73

4-2 Checking the Electrical Components

87

(1)

Measurement of Insulation Resistance

87

(2)

Checking the Protective Devices

88

(3)

Checking the Electrical Parts

89

(4)

Sensor and Solenoid Layout Diagram

92

(5)

Thermistor Characteristic Curve

94

(6)

P.C.B. Setting

95

(7)

R.C Address Setting Method

96

(8)

Automatic Address Setting Method

97

(9)

Displaying Indoor / Outdoor Unit Combination Numbers

97

(10)

Items to Check Prior to Test Run

98

(11)

Test Run

99

(12)

P.C.B. and Parts Location

102

(13)

Checking procedure for each PC Board

104

(14)

Check Pins

105

Section

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2

3

4

SM830076

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Contents Split System AIR Conditioner If Necessary, Get Help Please Read Before StartingWHO should USE this Manual Table of Contents Service Procedures Introduction Read Me First Specifications Performance Specifications Unit SpecificationsData Subject to Change Without Notice Model No Indoor Unit XHS3632 Outdoor Unit PNR-XHS3632 Fan motor Specifications Major Component Specifications Indoor UnitModel No XHS3632 Source Compressor Specifications Major Component Specifications Outdoor UnitModel No CH3632 Source Model No XHS2432 Power Transformer Specifications Other Component Specifications Indoor UnitXHS3632 Power Transformer Model No CH2432 Specifications Other Component Specifications Outdoor UnitModel No CH3632 Specifications Dimensional Data Indoor Unit XHS2432 Specifications Dimensional Data Indoor Unit XHS3632 Specifications Dimensional Data Outdoor Unit CH2432Specifications Dimensional Data Outdoor Unit CH3632 Indoor Unit XHS2432 Specifications Refrigerant Flow Diagram Outdoor Unit CH2432Operating Range Indoor Unit XHS3632 Specifications Refrigerant Flow Diagram Outdoor Unit CH3632Processes and Functions Processes and1.SpecificationsfunctionsCooling Room Temperature ControlProcesses and functions Heating Cold Draft Prevention Heating Cycle Automatic Fan Speed Indoor Unit Chart Explanations and notesOutdoor Fan Speed Control Freeze Prevention Cooling Condensing Temperature Control Cooling This function prevents the air conditioner from overloading Overload Protection HeatingDischarge Temperature Control Cooling and Heating Auto. Mode for Automatic Heating/Cooling Switching Processes and functions Defrosting Control, Outdoor Heat Exchanger Coil Heating Time Chart for Defrosting11 4-Way Valve, Solenoid Control Normal Control ModeAuto Control Mode Automatic Restart after Power InterruptionElectronic Expansion Valve Compressor Discharge Gas TemperatureHeating Except During Defrosting Fuzzy ControlOverload Protection Compressor Current Detection CircuitElectronic Expansion Valve Control Contents and Order of controlRefrigerant flow distribution control Fuzzy control optimal refrigerant flow rate controlVoltage Detection Control Processes and functions Electrical data Electrical DataXHS2432, XHS3632 Indoor UnitSchematic Diagram OutdoorUnit CH2432Controller Outdoor Unit CH3632 Electric Wiring DiagramFMO1 FMO2 Electrical data Service procedures Service ProceduresThis section explains TroubleshootingCheck power supply Service procedures Check before and after TroubleshootingCheck power supply wiring Check inter-unit wiringCooling Service procedures Heating Controller Display Meanings of alarm messagesWireless 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 Measurement of Insulation Resistance Checking the Electrical ComponentsCompressor motor thermal protector . . . . . . Outdoor unit Checking the Protective DevicesPower transformer TR1 Service procedures Checking the Electrical PartsContinuity of fuse on P.C.B. Ass’y Motor capacitor ............ Both in indoor and outdoor unitSolenoid coil of the electronic refrigerant Case of single -phase compressorCompressor motor CM ……… Outdoor unit Compressor motor magnetic contactor 52C ………… Outdoor unitCH2432 Service procedures Sensor and Solenoid Layout DiagramXHS3632 Service procedures Thermistor Characteristic Curve Central control when using the *system controller Service procedures C.B. SettingSetting of indoor control P.C.B Standard control single outdoor unitBoth OFF Set to When shipped from factory Displaying Indoor / Outdoor Unit Combination Numbers Service procedures Automatic Address Setting MethodItems to Check Prior to Test Run Service procedures Test Run 100 Test Run Procedure CR-THS2432 Service procedures 12 P.C.B. and Parts LocationCR-CH2432 Checking procedure for each P.C.B Switch the pin from normal operation to check operation Service procedures Check PinsCentral Region
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