Heat Controller RADS-81B, RAD-101A, RAD-81A manual Troubleshooting Guide, Unit runs but poor cooling

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Troubleshooting Guide

TroubleshootingGuide

In general, possible trouble is classified in two kinds.

The one is called Starting Failure which is caused from an electrical defect, and the other is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application.

Unit runs but poor cooling.

Ineffective Cooling

Check cold air circulation for smooth flow.

Dirty indoor coil (heat exchanger)

Malfunction of fan.

Clogging of air filter.

Obstruction at air outlet.

Remove obstruction.

Check clogging in refrigera- tion circuit.

Repair clogging in refrigeration circuit.

Check outdoor coil (heat exchanger) and fan operation.

Check gas leakage.

Repair gas leak.

Replacement of unit if the unit is beyond repair.

Satisfactory operation with temperature difference of inlet & outlet air; 44~50°F (7~10°C)

Check heat load increase.

Clean condenser.

Not on separate circuit

Check inside gas pressure.

Adjust refrigerant charge.

Malfunction of compressor.

Replacement of compressor.

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Contents +$7&21752//5,1& Table of Contents Do not disassemble or modify products Safety PrecautionsAlways install the expansion panels Do not modify power cord length Plug in the power plug properlyVentilate before operating air conditionerwhen gas goes out Do not use the socket if it is loose or damagedDo not clean the air conditioner with water Outside Dimensions DimensionsSymbols Used in this Manual Items Product SpecificationsRAD 81A Rads 81B Installation Check InstallationHow to Secure the Drain Pipe Select the Best LocationWindow Requirements How to InstallPreparation of Chassis Cabinet InstallationIndoor Outdoor Window Locking Bracket Location and Function of Controls OperationFor Normal Cooling For Maximum CoolingRemote Control Operations Mechanical Parts DisassemblyFront Grille CabinetFAN and Shroud Air Handling PartsAIR Guide and Blower Motor Electrical PartsOverload Protector CompressorThermostat Model Rotary Switch Type Model Capacitor Model Rotary Switch Type ModelModel Touch & Remote Control Type Model Power Cord Rotary Switch Model Rotary Switch Type ModelRefrigerating Cycle CondenserCapillary Tube EvaporatorPulling Vacuum Wiring Diagram Schematic DiagramCircuit Diagram Electronic Control Device Components LocationFor Main P.W.B ASM Piping System Troubleshooting GuideUnit runs but poor cooling Troubleshooting GuideFails to Start Possible Trouble Electric Parts Troubleshooting GuideModel BG8000ER, WG8000RY4, WG1000RY4 Set the Temp. setting to lower Temp Is the voltage No.16 Room AIR Conditioner Voltage Limits Troubleshooting Guide Troubleshooting Guide W0CZZ Exploded Vie wReplacement Parts List +$7&21752//5,1&