Heat Controller A-MMC36FA-1, B-MMH12FA-1 manual Trouble 4 When indoor Fan does not operate, Nector

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Troubleshooting Guide

Trouble 4 When indoor Fan does not operate.

When indoor Fan does not operate.

Does the voltage of each terminals of CN-MOTOR CONNECTOR in

Indoor unit corresponds to values in the Table of page 70

Does the voltage of terminal of CN-DC/DC CONNECTOR in Indoor unit that corresponds to the values in the table of page 70

Check connection condition of the CN-MOTOR CON-

NECTOR

Does the voltage of terminal of CN-DC/DC CONNECTOR in Outdoor unit corresponds to the values in the table of page 70

Check the pattern and the condition of Indoor unit PCB Ass'y.

Check for any interference of Indoor Fan.

NO

Check the patterns and the conditions of outdoor unit PCB Assy's.

Check the condition of con- necting wires between Indoor and Outdoor unit.

Check the motor of Indoor Fan

Indoor Fan may be off in the Soft Dry Mode(change to the Cooling Operation Mode).

Indoor Fan is off when Indoor pipe(coil) termperature is lower than 79°F. (At that time, the defrost indicator is turn on.)

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Service Manual

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Contents Heat CONTROLLER, INC Table of Contents Symbols Used in this Manual KBtu/h 2 roomsKBtu/h 3 rooms Installation Safety PrecautionsBe sure not to do Be sure to follow the instruction Control box securely Cuit and breakerDo not install the product on a Do not install, remove, or reDefective installation stand Do not allow water to run into electric partsWhen the product is soaked Be cautious that water can Never enter the productFlooded or submerged, contact Install the drain hose to ensure that Keep level even when Installing the productUse two or more people to lift and transport the product Operational Do not use the remote is the batteries have leaked Selecting the locationOutdoor Unit Seaside applications and installationDimensions Indoor UnitSplit Type Indoor 18kBtu/h Outdoor Unit24kBtu/h 36kBtu/h UE2Indoor Unit Type Wall Mounted Model Product SpecificationsMMC18FA-1 MMH18FA-1 Outdoor Unit Multiple piping modelsMMC24FA-1 MMH24FA-1 MMC36FA-1 MMH36FA-1 Installation Installation PartsInstallation Tools Selecting the best location Piping length and elevation Multi Piping Type18 / 24 kBtu/h KBtu/h Drilling the hole in the wall Installing Installation PlateStandard TypeFlaring work Flaring Work and Connection of PipingConnecting the Piping CheckIndoor Wrap the insulation material around the all connections Indoor unit installationFor left rear piping Wrap the insulation material around the connecting por- tion Bad case Good caseRemote Control Preparationoptional Outdoor Outdoor unit 18/24 kBtu/hOutdoor unit 36 kBtu/h Tions ETL recognized and CSA certified Connect the cable to the Indoor unitOutdoor unit Connect the cable to the Outdoor unitHow to connect wiring to the terminals Methods of connecting the cableModel Checking the drainage To check the drainageDrain piping Insulating the Pipe and Special Piping Applications Secure the taped piping along the exterior wall usingLeak checking Air Purging and EvacuationPreparation Leakage testRepeat evacuation procedure for each indoor unit EvacuationFinishing the job Additional ChargingSplit Type Test RunningSoft Dry Operation Mode Cooling Mode OperationHeating Mode Operation OperationDefrost ControlHeating Fuzzy OperationFuzzy Operation for Cooling Off-Timer Operation On-Timer OperationAirflow Speed Selection Fuzzy Operation for DehumidificationSleep Timer Operation Off-Timer = On-Timer OperationChaos Swing Mode Chaos Natural Wind ModeBuzzer Sound Forced OperationSplit Type Indoor Unit Function of Indoor UnitFunction of Outdoor Unit Remote Control Operation Time Setting Buttons Used to adjust the timeCooling Model , Heat Pump Model To remove the Grille from the Chassis DisassemblyTo remove the Control Box To remove the Motor Cover Schematic Diagram Electronic Control DeviceIndoor Unit TMP87CM41F Outdoor UnitRY-4WAY RY-LIQ RY-GAS RY-FANL RY-FANH Indoor Unit Outdoor Unit Wiring DiagramMMC24FA-1 Bottom View Component LocationsDisplay Assembly Split Type 6871A20680 Component side Solder side Refrigeration Cycle Diagram Troubleshooting GuideMMC18FA-1 MMH18FA-1MMH24FA-1 MMH36FA-1 MMC36FA-1Outdoor Error Indoor ErrorError Indicator Self-diagnosis FunctionTrouble analysis Cycle Troubleshooting GuideProcedure Specification Remedy Electronic Parts Troubleshooting GuideProduct doesnt operate with the remote controller Check Point Comp. on Comp. OFF Compressor/Outdoor Fan dont operateNector Trouble 4 When indoor Fan does not operateRY-COMP-B Voltage of Connectors according to Indoor Fan SpeedWhen Vertical Louver does not operate Check Point Error CodeIndoor air sensor Indoor inlet pipe sensorDescription Cause of error Check point & Normal condition Power input AC 230V.Outdoor, IndoorCommunication line is shorted at GND Comp OFF Outdoor air sensor Condensor pipe sensorPipe sensor Way Valve Liguid Side Way, 3-way ValvePumping down ProcedureReplace the valve and service port caps EvacuationAll the refrigerant leaked Gas Charging Replace the valve stem nuts and the service port nutAfter Evacuation Connect the gauge to the charging cylinderModel B-MMC09FA-1, B-MMH09FA-1, B-MMC12FA-1, B-MMH12FA-1 Exploded ViewModel A-MMC18FA-1, A-MMH18FA-1 Model A-MMC24FA-1, A-MMH24FA-1 Model A-MMC36FA-1, A-MMH36FA-1 08/06/2008 Heat CONTROLLER, INC