Heat Controller VMC24SB-1/VMH24SB-1, VMC09SB-1/VMH09SB-1, VMC18SB-1/VMH18SB-1 service manual Trouble

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Part 4 Trouble Shooting

Trouble 4

The Compressor/Outdoor Fan does not operate (18, 24, 30kBtu/h Model)

Turn on the main power.

Using the remote controller, set the indoor set point to at least 15˚C(5˚F) less than the indoor air temperature.

When in air circulation mode, compressor/outdoor fan is stopped.

Check the sensor for Indoor temperature is attatched as close as to be effected by the themperature of Heat Exchange (EVA.)

When displaying Error code, refer to the trouble shooting guide.

Check the main power source.(AC 208V~230V)

Check the trouble shooting guide error code 21,26.

Check that CN_FAN(A,B) supplied voltage to outdoor PCB is about AC 208V~230V.

Turn off main power.

Check the electrical wiring diagram of Outdoor side.

Check the open or short of connecting wires between Indoor and Outdoor.

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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 & ControlsCooling Mode Basic Mode ControlsHeating Mode Heatpump Only Healthy Dehumidification operation Intake air Temp Setting TempAuto changeover operation Heatpump Only 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 Heat sink temperature control Heat sink sensor failure errorFunction 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 There can be two situations Constant Compressor only 30kBtu/h ModelCompressor working 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 Self-diagnosis Function Error Indicator12kBtu/h Model 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 ShootingComp Troubleshooting CH21Copper Comp pipe Troubleshooting CH21, CH22 Troubleshooting CH23, CH28 Troubleshooting CH24, CH25 ‘B’ Troubleshooting CH26, CH27Troubleshooting CH32, CH33, CH40 Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65 Inverter/Constant Troubleshooting CH51, CH60Condenser/Suction Pipe 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

The Heat Controller VMC30SB-1/VMH30SB-1, VMC09SB-1/VMH09SB-1, VMC24SB-1/VMH24SB-1, VMC18SB-1/VMH18SB-1, and VMC12SB-1/VMH12SB-1 are versatile and efficient HVAC systems designed for residential and commercial applications. These units stand out due to their innovative technologies, user-friendly features, and reliable performance, making them an excellent choice for heating and cooling needs.

One of the most significant features of these units is their Energy Efficiency Rating (EER). Each model has been engineered to provide optimal energy savings, thus minimizing operating costs and environmental impact. Utilizing advanced inverter technology, the systems adjust their cooling and heating output according to the room's demand, ensuring that energy is used only when necessary. This results in quieter operation, less energy consumption, and enhanced comfort.

The VMC and VMH models are equipped with high-performance compressors that provide rapid heating and cooling capabilities. This feature allows users to attain their desired temperatures more quickly compared to traditional systems, ensuring a comfortable environment throughout the year. In addition, the systems maintain consistent temperatures and reduce temperature fluctuations, contributing to a more enjoyable living or working space.

Another key characteristic of the Heat Controller units is their comprehensive filtration systems. These include multi-stage filters designed to trap dust, allergens, and other particulate matter, contributing to improved indoor air quality. This aspect is particularly important for those who suffer from allergies or respiratory issues, as the units help to create a cleaner, healthier living environment.

The compact design of these models allows for easy installation in various spaces, including small apartments or tight commercial setups. They feature an intuitive control panel that offers user-friendly programming options, enabling users to schedule operations according to their daily routines. Additionally, many models include smart connectivity features, allowing remote access and adjustments via mobile apps.

Finally, the aesthetic design of the VMC and VMH series complements modern interior decors, ensuring that these units not only perform well but look good while doing so. With a combination of reliability, energy efficiency, and user-centric features, the Heat Controller VMC and VMH series stand out as an excellent investment for any heating and cooling requirement. These units promise comfort, convenience, and cost-effective operation.
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