Heat Controller VMC18SB-1/VMH18SB-1 service manual Special Mode Controls, Jet Cool operation

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Part 2 Functions & Controls

3. SpecialModeControls

3.1 Jet Cool operation

•In the heating mode or Fuzzy operation, the Jet cool function does not work.

When it is input while in other mode of operation (cooling, dehumidification, ventilation), the Jet cool operation takes place.

•In the Jet cool mode, the indoor fan is operated at super-high speed for 30 min. at cooling mode operation.

•In the Jet cool mode, the room temperature is maintained at a setting temperature of 18°C(64.4°F).

•When the sleep timer mode is input during the Jet cool operation, the Jet cool mode has the priority.

•When the Jet cool button is pressed, the horizontal vane of the unit is reset to the initial cooling vane position and then operates so that the air outflow can reach further.

3.2 Jet Heat operation Heatpump Only

•While in cooling mode or Fuzzy operation, the Jet Heat function does not work.

When it is input while in the Heating mode operation (dehumidification), the Jet Heat mode operation takes place

•In the Jet Heat mode, the indoor fan operated at super-high speed for 60 min. at Heating mode operation.

•In the Jet Heat mode, the room temperature is maintained at a temperature of 30°C(86°F).

•When the sleep timer mode is input during the Jet Heat mode operation, the Jet Heat mode has the priority.

•When the Jet Heat button is pressed, the horizontal vane of the unit is reset to the initial Jet heating vane position and then operates so that the air outflow can reach further.

3.3 Energy saving operation in cooling mode

•During cooling and dehumidification mode of operation, the Energy saving button can be input.

•In this operation, the set temperature and air volume is set automatically to save energy.

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Only for training and service purposes

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Contents Heat CONTROLLER, INC Contents Part 1 General Information Be sure not to do Be sure to follow the instruction Safety PrecautionsPart 1 General Information Inspections after Repair Part 2 Functions & Controls Category Function Description Remark List of Functions & ControlsHeating Mode Heatpump Only Basic Mode ControlsCooling Mode Auto changeover operation Heatpump Only Intake air Temp Setting TempHealthy Dehumidification operation Jet Heat operation Heatpump Only Special Mode ControlsEnergy saving operation in cooling mode Jet Cool operationHeat/pump Model Cooling/only Model Auto cleaning operationUtility Functions Forced operationNatural Air ControlAuto Wind Air volume controlSleep mode Auto control Sleep timer operation for cooling cycleAuto restart Sleep timer operation for heating cycle Heatpump OnlyHot start Heatpump Only Protection Functions & ControlsFive Seconds Stand-by fan Two Minutes Stand-by comp1 9,12kBtu/h Model Outdoor Temperature Running Time secCompressor Preheating Heatpump Only Sump Heater Control 9, 12kBtu/h Model Only Heatpump OnlyAutomatic defrost Heatpump Only 2 18,24,30kBtu/h Model Starting the defrosting operationControl algorithm of defrost completion Defrosting Control AlgorithmInverter Power Relay ControlOverheating Protection Power Module Function Heat sink sensor failure errorHeat sink temperature control Model KBtu/h Cooling Heating Total Current Control Over Current ProtectionCT1 control CT2 control11A 12A 14A 15.5A Discharge Pipe Temp Control DC Peak controlInverter Compressor 18,24,30kBtu/h Model Compressor working Constant Compressor only 30kBtu/h ModelThere can be two situations Model Mode-in Condition Mode-out Condition Low Ambient control12.1 9,12kBtu/h Model 12.2 18, 24, 30kBtu/h ModelOperation Process Oil return control30kBtu/h Model Heatpump OnlyOil equalizing control30kBtu/h Model Operating ContionPart 3 Test Run Check before Test Run Test Run Flow chart Test Run DetailCheck before Test Run Start Test Run Flow chartEvaluation of the performance Pump Down ProcedureTest Run Detail Settlement of outdoor unitPart 4 Trouble Shooting Way Valve Liquid Side Way, 3-Way ValveSet the 2-way valve to the closed position ProcedurePumping Down Air purging of the charge hoseEvacuation Purge the air from the charge hose Mount the valve stem nuts and the service port nutGas Charging After Evacuation Connect the charge hose to the charging cylinderTrouble analysis Cycle Troubleshooting GuideProcedure Specification Remedy Electronic Parts Troubleshooting GuideTrouble Compressor/Outdoor Fan does not operate 9, 12kBtu/h Model Trouble When indoor Fan does not operate.9~30kBtu/h Model 12kBtu/h Model Error IndicatorSelf-diagnosis Function Red Green Status 18,24,30kBtu/h Model Indoor ErrorOutdoor Error Error code DescritionCode ErrorTroubleshooting Guide9,12kBtu/h Model Description Cause of error Heat-sink Temp. is over Description Cause of error DC Peak Error Description Cause of error Over current Error Description Cause of error Indoor fan is locked Description Cause of error Discharge pipe temp. is Check Point Troubleshooting CH01, CH02, CH06Troubleshooting CH05, CH53 Part Trouble ShootingCopper Comp pipe Troubleshooting CH21Comp Troubleshooting CH21, CH22 Troubleshooting CH23, CH28 Troubleshooting CH24, CH25 ‘B’ Troubleshooting CH26, CH27Troubleshooting CH32, CH33, CH40 Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65 Condenser/Suction Pipe Troubleshooting CH51, CH60Inverter/Constant Troubleshooting CH61, CH62 Heat CONTROLLER, INC

VMC12SB-1/VMH12SB-1, VMC18SB-1/VMH18SB-1, VMC24SB-1/VMH24SB-1, VMC09SB-1/VMH09SB-1, VMC30SB-1/VMH30SB-1 specifications

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