Friedrich 2008, 2009 Functional Component Definitions, EQ08 System Control Switch Test

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SYSTEM CONTROL SWITCH - TEST (See Figure 15) Disconnect leads from control switch. There must be continuity as follows:

1.“Off” Position - no continuity between terminals.

2.“Lo Cool” Position - between terminals “L1” and “C,” “LO” and “MS.”

3.“Med Cool” Position - between terminals “L1” and “C,” “M” and “MS.”

4.“Hi Cool” Position - between terminals “L1” and “C,” “H” and “MS.”

5.“Fan Only” Position - between terminals “L1” and “2.”

Figure 15

System Control Switch

“EQ08” SYSTEM CONTROL SWITCH – TEST

(See Figure 16)

Turn knob to phase of switch to be tested. There must be continuity as follows:

1.“Fan Only” Position – between terminals “MS” and “H”

2.“Hi Cool” Position – between terminals “L1” and “C” and “MS” and “H”

3.“Low Cool” Position – between terminals “L1” and “C” and “MS” and “LO”

4.“Low Heat” Position – between terminals “L2” and “2” and “MS” and “LO”

5.“Hi Heat” Position – between terminals “L2” and “2” and “MS” and “H”

Figure 16

 

L1

 

 

 

 

 

System Control Switch

 

 

 

 

 

(EQ Models)

B1

 

MS

L2

 

 

H

C

 

 

LO

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FUNCTIONAL COMPONENT DEFINITIONS

MECHANICAL COMPONENTS

Bellows condensate 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 58°F.

Vent door Allows introduction of fresh air into the room and/or exhausts stale room air outside (on select models.)

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.

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 troubleshoot- ing, 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.

Defrost thermostat (Heatpumps only) A dual purpose control that acts as an outdoor thermostat and defrost control.

Smart Fan Automatically adjusts the fan speed to main- tain the desired room temp.

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, available in 3.3, 4.0 or 5.2 kW on select TwinTemp® models.

Heat anticipator Used to provide better thermostat and room air temperature control.

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 dis- tribute the flow of refrigerant to the heat exchangers (coils.)

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Contents Room Air Conditioners Technical Support Contact Information Table Of Contents Important Safety Information Your safety and the safety of others are very importantRefrigeration System Hazards Property Damage Hazards Introduction Typical Unit Components7th Digit Options 0 = Straight Cool & Heat Pump Models 1st Digit Function2nd Digit 6th Digit Voltage 1 = 115 VoltsChassis Specifications for 2009, 2008 models Installation information / sleeve dimensions Performance Data for 2009, 2008 models Electric Shock Hazard Fire HazardMake sure the wiring is adequate for your unit To adjust temperature 60F 16C to 90F 32C To start unitHow to use the remote control* QuietMaster Programmable How to operate the Friedrich room air conditioner XQ models How to use the remote control XQ models How to operate the Friedrich room air conditioner Checking Room Temperature Testing the Electronic Control Boards for QME & XQ ModelsActivating Test Mode Testing the Electronic Control Error Code Listings Testing the Rotary Control Switches KS, KM, SL Models See FigureMechanical Components EQ08 System Control Switch TestFunctional Component Definitions Electrical ComponentsTest Components TestingThermostat Adjustment Thermostat Bulb LocationDefrost Thermostat Heat Pump Models Only Resistor Heat Anticipator See FigureDefrost Bulb Location Heat Pump Models Capacitor Connections CapacitorsCapacitor Check with Capacitor Analyzer FAN MotorHeating Element Heat Pump Models Testing the Heating Element Electric Shock HazardHeating Element See Figure Drain PAN ValveOperating Sequence / Characteristics and Features Smart FANRefrigeration Sequence of Operation Equipment Must be Capable Sealed Refrigeration System RepairsEquipment Required Risk of Electric ShockBurn Hazard Method Of Charging / RepairsFreeze Hazard Undercharged Refrigerant Systems Overcharged Refrigerant SystemsRestricted Refrigerant System Check Valve Hermetic Components CheckMetering Device Capillary Tube SystemsReversing Valve DESCRIPTION/OPERATION Testing the Coil Checking the Reversing ValveTouch Test in Heating/Cooling Cycle Procedure For Changing Reversing ValveExplosion Hazard Compressor Checks Ground Test Single Phase Resistance TestChecking Compressor Efficiency Recommended procedure for compressor replacement Compressor ReplacementHigh Temperatures Rotary Compressor Special Troubleshooting and Service Blower Wheel / Housing / Condenser FAN / Shroud Routine MaintenanceCoils and Base PAN Excessive Weight Hazard AIR FilterSleeve / Drain Front CoverCooling only Room AIR Conditioners Troubleshooting Tips Problem Possible Cause ActionReplace fuse, reset breaker. If repeats, check Fused separately Problem Possible Cause Action Heat / Cool only Room AIR Conditioners Troubleshooting Tips Heat / Cool Room AIR Conditioners Trouble Shooting Tips Problem Possible Cause ActionHeat Pump System Cools When Heating is DesiredYES Normal Function of Valve Malfunction of ValveElectronic Control Cool only Models Electronic Control Cool only Models Electromechanical Control Cool only Models SL28L30-D,-E SL36L30A-D,A-E Page Electromechanical Control Cool with Electric Heat Models EL36L35A-D,A-E Electromechanical Control Heat Pump only Models YS13L33-D,-E YM18L34-D,-E YL24L35-E,-F Aham PUB. NO. RAC-1 Heat Gain from Quantity Factors Cooling Load Estimate FormDAY Following is an example using the heat load form Heat Load FormWindows & Doors Area, sq. ft Infiltration Windows & Doors AVGRoom AIR Conditioners Limited Warranty Page Technical Support Contact Information Friedrich AIR Conditioning CO
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2009, 2008 specifications

Friedrich 2008 and 2009 represent significant advancements in heating and cooling technology, particularly in the realm of air conditioning systems. Friedrich is known for producing robust and efficient HVAC solutions tailored for both residential and commercial applications. These models are particularly noteworthy for their innovative features and energy-efficient technologies that enhance user comfort and lower operational costs.

One of the main characteristics of the Friedrich 2008 and 2009 models is their emphasis on energy efficiency. Both units are designed to meet or exceed Energy Star standards, which indicates that they use less energy compared to standard models, contributing to greener living solutions. The incorporation of efficient compressors and high SEER (Seasonal Energy Efficiency Ratio) ratings ensures that users save money on their electricity bills while enjoying optimal cooling performance.

The units also feature advanced inverter technology, which allows for variable speed operation. This means that the system can adjust its cooling capacity based on the current temperature needs, resulting in more consistent comfort while reducing wear and tear on the equipment. Additionally, the inverter technology operates more quietly compared to traditional systems, making these models suitable for both home environments and commercial settings.

Friedrich 2008 and 2009 also provide users with enhanced control options. The inclusion of smart technology and Wi-Fi connectivity allows for remote monitoring and temperature adjustments via smartphones or tablets. Users can create schedules, set temperature preferences, and receive maintenance alerts, contributing to a more user-friendly experience.

Moreover, these models are designed with robust construction, featuring durable materials that withstand various weather conditions. Their compact footprint and sleek design make them suitable for window installation, while an array of sizes accommodates spaces of different dimensions.

Additionally, the air filtration systems in Friedrich 2008 and 2009 units improve indoor air quality. They effectively capture dust, allergens, and other particulates, ensuring a healthier environment for occupants.

In summary, Friedrich 2008 and 2009 models stand out for their energy efficiency, innovative inverter technology, smart controls, and robust construction. With a focus on user comfort and environmental responsibility, these models provide reliable solutions for effective heating and cooling in diverse applications.
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