Heat Controller VMC12SB-1/VMH12SB-1, VMC09SB-1/VMH09SB-1 Defrosting Control Algorithm

Page 19

Part 2 Functions & Controls

•Defrosting Control Algorithm

1)Lowering the compressor frequency starts the defrosting operation. Constant speed compressor is ON 10 seconds.

2)The EEV has an opening 350 pulse (Option) when starting the defrosting operation.

3)Reversing valve is OFF after 5 seconds from the compressor reaching an operating frequency of 30 Hz. Then the indoor fan turns OFF (including when the indoor unit is OFF, except if the remote controller is OFF).

4)After 5 seconds from the compressor reaching 30Hz, the outdoor unit fan turns off and the Hot gas Bypass/Oil Separator valve turns OFF.

NOTE: Comp.frequency and EEV pulse is different for each models.

•Control algorithm of defrost completion

1)Frequency of compressor lowers to 30 Hz and maintains constant speed operation at 30 Hz for 75 seconds and then starts operating. If the constant speed compressor is OFF, it will receive an off receive OFF signal after 5 seconds from the compressor reaching 30 Hz.

2)The EEV will open with the standard previous pulse after 5 seconds from the time the compressor reaches 30 Hz.

3)Reversing valve is ON after 15 seconds from the time the compressor reaches 30 Hz.

4)The indoor unit fan is ON with high speed for 5 seconds from the time the compressor reaches 30Hz.

5)Hot Gas bypass valve/Oil separator bypass valve is OFF after 75 seconds from the time the compressor reach- es 30Hz.

NOTE: Comp.frequency and EEV pulse is different for each models.

- 19 -

Only for training and service purposes

Page 18 Page 20
Image 19
Page 18 Page 20
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.
Top Page Image Contents