Friedrich WS10B10 Capacitors, Heating Element, Drain PAN Valve, Capacitor Connections

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COMPONENTS TESTING (Continued)

CAPACITORS

WARNING

ELECTRIC SHOCK HAZARD

Turn off electric power before servicing. Discharge capacitor with a 20,000 Ohm 2 Watt resistor before handling.

Failure to do so may result in personal injury, or death.

Many motor capacitors are internally fused. Shorting the terminals will blow the fuse, ruining the capacitor. A 20,000 ohm 2 watt resistor can be used to discharge capacitors safely. Remove wires from capacitor and place resistor across terminals. When checking a dual capacitor with a capacitor analyzer or ohmmeter, both sides must be tested.

Capacitor Check with Capacitor Analyzer

The capacitor analyzer will show whether the capacitor is “open” or “shorted.” It will tell whether the capacitor is within its micro farads rating and it will show whether the capacitor is operating at the proper power-factor percentage. The instrument will automatically discharge the capacitor when the test switch is released.

Capacitor Connections

The starting winding of a motor can be damaged by a shorted and grounded running capacitor. This damage usually can be avoided by proper connection of the running capacitor terminals.

From the supply line on a typical 230 volt circuit, a 115 volt potential exists from the “R” terminal to ground through a possible short in the capacitor. However, from the “S” or start terminal, a much higher potential, possibly as high as 400 volts, exists because of the counter EMF generated in the start winding. Therefore, the possibility of capacitor failure is much greater when the identified terminal is connected to the “S” or start terminal. The identified terminal should always be connected to the supply line, or “R” terminal, never to the “S” terminal.

When connected properly, a shorted or grounded running capacitor will result in a direct short to ground from the “R” terminal and will blow the line fuse. The motor protector will protect the main winding from excessive temperature.

HEATING ELEMENT

(“WE” &”WY” Models)

All “WE” and “WY” models are equipped with a 3.3 KW heating element.

The heating element has two heater limit switches (bimetal thermostats) connected in series with it. The Primary limit located near the bottom, will open the circuit when the temperature reaches 130°F +/-5°. The Secondary is a high limit switch near the top of the element. It is designed to open the circuit at 165°F +/-8°.

Should the fan motor fail or filter become clogged etc., the high limit switch will open and interrupt the power to the heater before reaching an unsafe temperature condition.

Test the heater element for continuity below 130°F.

Heating Element

Not actual element - for reference only

DRAIN PAN VALVE

During the cooling mode of operation, condensate which collects in the drain pan is picked up by the condenser fan blade and sprayed onto the condenser coil. This as- sists in cooling the refrigerant plus evaporating the water.

During the heating mode of operation, it is necessary that water be removed to prevent it from freezing during cold outside temperatures. This could cause the condenser fan blade to freeze in the accumulated water and prevent it from turning.

To provide a means of draining this water, a bellows type drain valve is installed over a drain opening in the base pan. This valve is temperature sensitive and will open when the outside temperature reaches 40°F. The valve will close gradually as the temperature rises above 40°F to fully close at 60°F.

Drain Pan Valve

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Contents Thru-the-wall Table Of Contents Your safety and the safety of others are very important Important Safety InformationRefrigeration System Hazards Property Damage Hazards IntroductionFriedrich wallmaster Model Number Code Performance Data Sleeve / Chassis DimensionsFire Hazard Electrical DataPlug/Outlet/Circuit Rating Electric Shock HazardTo activate Smart FanWY/WE heat-cool models To adjust fan speedElectronic Control Operation To activate Smart FanWS cool-only modelsTo set the timer Checking Room TemperatureTo Activate Money Saver WY/WE models To set mode of operation To adjust temperatureTo start unit Automatic component protection Error Code ModeTesting the Electronic Control Electronic Control PanelE7 Motor Operation E9 Heat Pump Failure Error Codes Listing for WS ModelsError Codes Listing for WE/WY Models Reboot the Control PanelFAN Motor Test Components TestingCoil Sensors FAN MotorCapacitor Check with Capacitor Analyzer CapacitorsHeating Element Drain PAN ValveRefrigeration System Sequence of Operation Refrigeration system under high pressure 410A Sealed System Repair ConsiderationsRisk of Electric Shock 410A Sealed Refrigeration System RepairsEquipment Required Equipment Must be CapableMethod Of Charging / Repairs Burn HazardFreeze Hazard Overcharged Refrigerant Systems Undercharged Refrigerant SystemsRestricted Refrigerant System Capillary Tube Systems Hermetic Components CheckMetering Device Check ValvePOSITION, 4 Port Reversing Valve Reversing Valve DESCRIPTION/OPERATIONChecking the Reversing Valve Testing the CoilProcedure For Changing Reversing Valve Touch Test in Heating/Cooling CycleExplosion Hazard Compressor Checks Ground Test Single Phase Resistance TestCompressor Replacement Recommended procedure for compressor replacementHigh Temperatures Rotary Compressor Special Troubleshooting and Service Routine Maintenance Sleeve / Drain Front CoverClearances Date Model Serial Room AIR Conditioner Unit Performance Test Data SheetGeneral Troubleshooting Tips General Troubleshooting Tips Cooling only Room AIR Conditioners Troubleshooting Tips Possible Cause Possible Solution Problem Possible Cause Possible Action HEAT/COOL only Room AIR Conditioners Troubleshooting Tips Heat Pump Troubleshooting Troubleshooting Chart Cooling Troubleshooting Chart Heating Heat PumpProblem Electrical Troubleshooting Chart Heat Pump System Cools When Heating is DesiredYES Malfunction of Valve Normal Function of ValvePage Page Page Installation Accessories Mounting Hardware Provided Wall PreparationDescription QTY MECHANICALCUT/SEVER Hazardhazard Installation RequirementsMECHANICALCUT/SEVER Hazard Installation Instructions for Baffle Adapter KIT BAKCUT/SEVER WallMaster Thru-the-WallMechanical Hazard MECHANICALCUT/SEVER Hazard Installation InstructionsAssembly & Installation Instructions Installation Instructions Subbase for WS, WE & WY Models Installation Instructions Architectural Grille Model AG MECHANICALCUT/SEVER Hazard WALLMASTER≤ THRU-THE-WALL AIR Conditioners Limited Warranty Technical Support Contact Information Page Page Friedrich AIR Conditioning CO