Heat Controller DMH12SB-0, DMC18SB-1 Compressor/Outdoor Fan are unable to drive.18k Model

Page 55

Troubleshooting Guide

Compressor/Outdoor Fan are unable to drive.(18k Model)

Turn on Main Power

Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 2°F at least.

When in Fan Mode, Compressor/Outdoor Fan is stopped.

Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(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 R02H(12.1K), R04H(6.2K), Micom (No.27) (Indoor unit).

• Check the indoor temperature sensor is disconnected or not(About 10kΩ / at 77°F).

When the temperature around Outdoor PWB Ass'y is above 163°F the compressor is stop and only Outdoor Fan is operating.

Check Relay(RY - COMP) for driving compressor.

•When the power(About AC200V) is applied to the connecting wire termi- nal support transferred to compressor, PWB Ass'y is normal.

•Check the circuit related to the relay(Outdoor unit).

Check point

COMP ON

COMP OFF

Between Micom(No.

DC5V

DC0V

5, 6) and GND

 

 

 

 

 

Between IC01M, IC02M(No. 9)

Below DC 1V

About DC12V

and IC01M, IC02M(No. 8)

(app)

 

 

 

 

Turn off Main Power

•Check the electrical wiring diagram of outdoor side.

•Check the abnormal condition for the component of Compressor/Outdoor Fan Motor.

Service Manual 55

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Contents Heat CONTROLLER, INC Table of Contents Installation Safety PrecautionsBe sure not to do Be sure to follow the instruction Do not handle the pipe by your- selfCostomer OperationDo not allow water to run into electric part There could result in personal injury and product dam- age There is risk of fire or electrical shockThere is risk of electric shock There is risk of electrical shockDo not block the inlet or outlet of air flow Water is drained away properly ProductLeakage Do not direct airflow at room occu- pantsDo not drink the water drained from the unit DisuseReplace all the batteries in the remote Indoor Unit DimensionsMminch 109042.9 30011.8 1787.0 Model Btu SeriesUnit Outdoor Unit9k, 12k 9k, 12k18k, 24k Features Symbols Used In This ManualIntroduction Read carefully, and then follow step by step InstallationInstallation Parts Installation ToolsInstallation Map This Product Contains R-410A Refrigerant Confirm The RefrigerantOutdoor unit Rooftop InstallationsSelect The Best Location Indoor unitPiping Length And Elevation Drill a Hole In The Wall How To Mount Installation PlatePutting nut on Flaring WorkCut the pipes and the cable Burrs removalIndoor unit installation Connecting The PipingIndoor Tighten the flare nut with a wrench Wrap the insulation material around the connecting portionIndoor unit installation Insert the connecting cable into the indoor unitTape the drain hose and the connecting cable Piping for passage through piping hole Incorrect case Correct caseConnection Of Piping -Outdoor Connection Of The Drain HoseOutdoor unit Connection Of The CableInstallation Avoid these situations Checking The DrainageDrain piping Drain hose should point downward for easy drain flowSeal small openings around pipings with a gum type sealer Forming The PipingLeak test Air PurgingAir purging With Vacuum Pump PreparationClockwise to fully open the valve EvacuationFinishing the job Connect the charge hose end describedImportantUnit is critically charged ChargingEvaluation of the performance Prepare remote controlTest Running Settlement of outdoor unitFunction of Controls Cooling Mode OperationHealthy Dehumidification Mode OperationDefrost Control Heating Mode OperationJet Cool Mode Operation H/P Model Sleep Timer OperationChaos Natural Wind Mode Jet Cool Mode Operation C/O ModelProtection of the evaporator pipe from frosting Forced operationTest operation Auto restartCooling Model Display FunctionSelf-diagnosis Function Heating ModelNd F Button Remote Control OperationsTo remove the Grille from the Chassis DisassemblyTo remove the Evaporator When repair, do not damage the Caution labelTo remove the Control Box To remove the Discharge GrilleTo remove the Cross-Flow Fan To remove the Motor CoverCooling & Heating Models Troubleshooting GuideRefrigeration Cycle Diagram Cooling Only ModelsWay Valve Liquid Side Way, 3-way ValvePumping Down ProcedureAir purging of the charge hose Gas leakage Balance Refrigerant of the 3-way ValveAll amount of refrigerant leaked Connect the charge hose to the charging cylinder Mount the valve stem nuts and the service port nutGas Charging After EvacuationAdditional gas charging Method of using graphMethod of using equation According to Indoor & Outdoor TemperatureTrouble analysis Cycle PartsProduct does not operate at all Electronic Parts 9k modelElectronic Parts 18k model Product is not operate with the remote controller Compressor/Outdoor Fan are unable to drive.9k Model Compressor/Outdoor Fan are unable to drive.18k Model Nector When indoor Fan does not operateWhen Vertical Louver does not operate When a comunication error occurs Indoor Unit Phenomena in case of connecting errorOutdoor Unit Electric Control Device Schematic DiagramOutdoor 9k, 12k Outdoor 18k, 24k Wiring Diagram Models 9kC/O Models 12kH/P, 12kC/O, H/P Models 18kC/O Models 18kH/P, 24kC/O, H/P Components Location Outdoor9k, 12k Outdoor18k, 24k 6870A90240D 6870A90240E Cooling Only Product SpecificationsDMH09SB-0 DMH12SB-0 DMH18SB-1 DMH24SB-1 Cooling & HeatingHeat CONTROLLER, INC

DMH12SB-0, DMH18SB-1, DMC24SB-1, DMH24SB-1, DMH09SB-0 specifications

The Heat Controller DMC24SB-1, DMH18SB-1, DMH09SB-0, DMH24SB-1, and DMC18SB-1 are a series of high-efficiency air conditioning systems designed to meet diverse climate control needs. Each model is equipped with advanced technologies to ensure optimal performance, energy efficiency, and user comfort.

One of the standout features across this range is the incorporation of inverter technology. This technology allows the units to adjust the compressor speed based on the desired temperature, significantly reducing energy consumption compared to traditional systems. As a result, users can enjoy lower utility bills while maintaining a consistent indoor climate.

The DMC24SB-1 is particularly notable for its robust cooling capacity, making it ideal for larger spaces. It boasts a sleek design that complements modern interiors while providing efficient air distribution through its multi-directional airflow system. The unit is also equipped with a programmable timer and remote control for added convenience.

The DMH series, including the DMH18SB-1, DMH09SB-0, and DMH24SB-1, offers versatility in terms of size and cooling capacity. The DMH09SB-0 is perfect for smaller rooms, while the DMH24SB-1 can effectively cool larger areas. Each model in the series features a quiet operation mode, ensuring minimal noise when cooling or heating.

The DMC18SB-1 stands out for its dual functionality, providing both heating and cooling options. This model is equipped with an advanced Eco-friendly refrigerant that not only reduces environmental impact but also enhances overall system efficiency. Additionally, it features self-cleaning technology that eliminates dust and allergens, improving indoor air quality.

All models are designed with user-friendliness in mind, featuring clear digital displays and easy-to-navigate controls. Moreover, these heat controllers adhere to the highest energy efficiency ratings, ensuring they meet stringent environmental guidelines.

In summary, the Heat Controller line featuring models DMC24SB-1, DMH18SB-1, DMH09SB-0, DMH24SB-1, and DMC18SB-1 exemplifies cutting-edge heating and cooling solutions. With their advanced technologies, energy-efficient performance, and user-centric designs, these units are well-suited for both residential and commercial applications, offering reliable comfort year-round.
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