Heat Controller DMH24DB-1 Compressor/Outdoor Fan are dont operate, Check Point Comp. on Comp. OFF

Page 59

Troubleshooting Guide

Trouble 3

The Compressor/Outdoor Fan are don't operate

Turn on the main power.

Operate Cooling Mode by setting the disired temperature of the remote controller is less than one of the Indoor temperature by 1°C at least.

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 the sensor circuit for Indoor temperature and connector are in bad connection or are not engaged, Compressor/Outdoor fan is stopped.

• Check the related circuit of R01H(1K), R02H(1K), R03H(1K), R04H(1K), Micom(pin No. 74 , 75 , 76 , 77 ).

• Check the Indoor temperature sensor is disconnected or not (about 10K at 25°C).

Check the Relay(RY-PWR, RY-START) for driving Compressor.

Check the voltage between brown and blue cable of terminal to connect the Outdoor (About AC208V / 230V).

Check the related circuit of relay in Outdoor PCB Ass'y.

Check Point

Comp. ON

Comp. OFF

Between Micom(No. 50,51) and

DC 5V

DC 0V

GND

 

 

Between IC01M(No. 10) and

DC 1V

DC 12V

GND

 

 

 

 

 

Turn off main power.

Check the electrical wiring diagram of Outdoor side.

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

Service Manual 59

Image 59
Contents Heat CONTROLLER, INC Table of Contents Combination table Symbols Used in this ManualControl box securely Cuit and breaker Safety PrecautionsInstallation Be sure not to do Be sure to follow the instructionDo not allow water to run into electric parts Do not install, remove, or reDo not install the product on a Defective installation standFlooded or submerged, contact When the product is soakedNot enter the product Use two or more people to lift and transport the product Install the drain hose to ensure that Keep level even whenInstalling the product Operational Be careful and avoid personal injury Split Type Indoor DimensionsIndoor Unit 24kBtu/h Outdoor UnitUnit Product SpecificationsDMC24DB-1 OperationDMH24DB-1 Installation Tools InstallationInstallation Parts Outdoor unit Rooftop InstallationsSelect the best location Indoor unit24k Piping length and elevationMulti Piping Type Fixing Installation PlateStandard Type Flaring work Flaring Work and Connection of PipingIndoor Connecting the PipingCheck Wrap the insulation material around the connecting por- tion For left rear piping Plastic bands Insulation material Connection Indoor Remote Control Preparationoptional Outdoor unit OutdoorConnect the cable to the Indoor unit Connecting the Cable between Indoor Unit and Outdoor UnitOutdoor unit Connect the cable to the Outdoor unitHow to connect wiring to the terminals Connection method of the connecting cableExampleConnect the cable to the indoor unit Drain piping Checking the drainageTo check the drainage Down to up Forming the pipingChecking method Air Purging and EvacuationFinishing the job Repeat evacuation procedure for each indoor unitEvacuation Additional ChargingSplit Type Test RunningOperation Cooling Mode OperationSoft Dry Operation Mode Heating Mode OperationFuzzy Operation for Cooling Defrost ControlHeatingFuzzy Operation Fuzzy Operation for Dehumidification On-Timer OperationOff-Timer Operation Airflow Speed SelectionChaos Natural Wind Mode Off-Timer = On-Timer OperationSleep Timer Operation Chaos Swing ModeBuzzer Sounding Operation Forced OperationSplit Type Indoor Unit Function of Indoor UnitFunction of Outdoor Unit 15 2nd F Button Remote Control OperationCooling Model , Heat Pump Model To remove the Grille from the Chassis DisassemblyTo remove the Control Box To remove the Motor Cover Indoor Unit Schematic DiagramElectronic Control Device TMP87CM41F Outdoor UnitRY-4WAY RY-LIQ RY-GAS RY-FANL RY-FANH Room Type Indoor Unit Wiring DiagramBottom View Components LocationsDisplay Assembly Split Type 6871A20680 Component side Solder side DMC24DB-1 Troubleshooting GuideRefrigeration Cycle Diagram DMH24DB-1Self-diagnosis Function Indoor ErrorOutdoor Error Error IndicatorTrouble 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 are dont operateNector Trouble 4 When indoor Fan does not operateTroubleshooting Guide Indoor inlet pipe sensor Error CodeCheck Point Indoor air sensorCommunication line is shorted at GND Power input AC 230V.Outdoor, IndoorError Title Cause of error Check point & Normal condition Pipe sensor Title Cause of error Check point & Normal conditionOutdoor air sensor Condensor pipe sensorWay Valve Liguid Side Way, 3-way ValveSet the liquid side valve to the closed position ProcedurePumping down Air purging of the charge hoseAll amount of refrigerant leaked Mount the valve caps and the service port capsEvacuation Connect the gauge to the charging cylinder Mount the valve stem nuts and the service port nutGas Charging After EvacuationHeat CONTROLLER, INC
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DMC24DB-1, DMH24DB-1 specifications

The Heat Controller DMH24DB-1 and DMC24DB-1 units stand out in the realm of climate control solutions, combining advanced technology with user-friendly features to enhance indoor comfort. These air conditioning systems are designed to provide efficient cooling and heating for both residential and commercial spaces.

One of the main features of the DMH24DB-1 and DMC24DB-1 is their inverter technology. This cutting-edge technology allows the units to adjust the compressor speed according to the cooling demands of the space, leading to significant energy savings. By operating at variable speeds instead of a fixed setting, the inverter provides a more consistent temperature, reduces wear and tear on components, and minimizes energy consumption, which can translate to lower electricity bills.

Both models offer a sleek and modern design, making them not only functional but also aesthetically pleasing. The indoor units are designed for easy placement in various environments and can blend seamlessly with any decor. In addition, they are relatively quiet during operation, with low noise levels that enhance indoor comfort without disturbing daily activities.

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With a variety of cooling and heating modes, these units can cater to different user preferences and seasonal demands. Features like turbo mode are designed to quickly bring a space to the desired temperature, while the eco-friendly refrigerant helps reduce environmental impact.

In summary, the Heat Controller DMH24DB-1 and DMC24DB-1 units are high-performance air conditioning systems equipped with advanced technologies and practical features, making them an excellent choice for anyone seeking efficient and reliable climate control solutions. Their energy efficiency, enhanced air quality, and smart technology integration position them as leaders in the market.