Friedrich 2008, 2009 Functional Components, A. Mechanical components, B. Electrical components

FUNCTIONAL COMPONENTS

A. Mechanical components

Drain pan valve

Temperature-sensitive valve that opens up to drain off condensate water when the outside temperature falls below 40°F and closes when the outside temperature reaches 60°F

Plenum assembly

Diffuser with directional louvers used to direct the conditioned airflow.

Blower wheel

Attaches to the indoor side of the fan motor shaft and is used for distributing unconditioned, room side air though the heat exchanger and delivering conditioned air into the room.

Slinger fan blade

Attaches to the outdoor side of the fan motor shaft and is used to move outside air through the condenser coil, while

slinging condensate water out of the base pan and onto the condenser coil, thus lowering the temperature and pressures within the coil.

B. Electrical components

Thermostat

Used to maintain the specified room side comfort level

System switch

Used to regulate the operation of the fan motor, the compressor or to turn the unit off. For troubleshooting, refer to the wiring diagrams and schematics in the back of this service manual.

Capacitor

Reduces line current and steadies the voltage supply, while greatly improving the torque characteristics of the fan motor and compressor motor.

MoneySaver® switch

When engaged, it sends the power supply to the fan motor through the thermostat, which allows for a cycle-fan operation.

Fan Motor

Dual-shafted fan motor operates the indoor blower wheel and the condenser fan blade simultaneously.

Solenoid

Used to energize the reversing valve on all heat pump units.

Heating element

Electric resistance heater

Heat anticipator

Used to provide better thermostat and room air temperature control.

C. Hermetic components

Compressor

Motorized device used to compress refrigerant through the sealed system.

Reversing valve

A four-way switching device used on all heat pump models to change the flow of refrigerant to permit heating or cooling.

Check valve

A pressure-operated device used to direct the flow of refrigerant to the proper capillary tube, during either the heating or cooling cycle.

Capillary tube

A cylindrical meter device used to evenly distribute the flow of refrigerant to the heat exchangers (coils.)

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