Friedrich EQ08M11, XQ06M10, XQ05M10, XQ10M10 EQ08 System Control Switch Test, Thermostat Adjustment

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COMPONENTS TESTING (Continued)

EQ08 SYSTEM CONTROL SWITCH - TEST

“EQ08” SYSTEM CONTROL SWITCH – TEST

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”

 

 

L1

 

System Control Switch

 

 

(EQ Models)

B1

 

 

MS

L2

H C

LO2

THERMOSTAT (“EQ08” Models) (See Figure 17)

This thermostat is single pole-double throw, cross ambient with a range of 60° to 92°F and a differential of ±2°F. Terminal “2” is common.

Thermostat

(EQ Model)

WARNING

ELECTRIC SHOCK HAZARD

Disconnect power to the unit before servicing. Failure to follow this warning could result in serious injury or death.

TEST:

1.Remove leads from thermostat.

2.Turn thermostat knob clockwise to its coldest position.

3.Test for continuity between the two terminals. Contacts should be closed.

4.Turn thermostat knob counterclockwise to its warmest position.

5.Test for continuity - contacts should be open.

NOTE: The thermostat must be within the temperature range listed to open and close.

To maintain the comfort level desired, a cross ambient type thermostat is used. The thermostat has a range from 60° ±2°F to 92° ±3°F. The thermostat bulb is positioned in front of the evaporator coil to sense the return air temperature. Thermostat malfunction or erratic operation is covered in the troubleshooting section of this manual.

TEST:

Cooling/Heating Models: Remove wires from thermostat and check continuity between terminal “2” (common) and “3” for cooling. Check between terminals “2” (common) and “1” for heating. Also check that contacts in thermostat open after placing in either position. NOTE: Temperature must be within range listed to check thermostat. Refer to the troubleshooting section in this manual for additional information on thermostat testing.

THERMOSTAT ADJUSTMENT

No attempt should be made to adjust thermostat. Due to the sensitivity of the internal mechanism and the sophisticated equipment required to check the calibration, it is suggested that the thermostat be replaced rather than calibrated. Thermostat bulb must be straight to insure proper performance.

Thermostat

THERMOSTAT BULB LOCATION

The position of the bulb is important in order for the thermostat to function properly. The bulb of the thermostat should be located approximately 45° to a maximum of 60° from horizontal. Also, do not allow the thermostat bulb to touch the evaporator coil. (See Figures 17 and 18)

Thermostat Bulb Location

(EQ Model)

Thermostat sensor holder 020 to be positioned between the 4th and 5th and 6th and 7th rows of tubes from the bottom of the coil at dimension shown

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Contents Volt EQ08M11 Volt XQ05M10*, XQ06M10*, XQ08M10*, XQ10M10Table Of Contents Your safety and the safety of others are very important Important Safety InformationRefrigeration System Hazards Property Damage Hazards Introduction00001 Unit Identification6th Digit Voltage 5th Digit Model Series / Year IntroducedPerformance Data Electrical Data Electric Shock HazardFire Hazard Electrical Shock Hazard How to operate the Friedrich room air conditioner XQ models How to use the remote control XQ models Electronic Control Sequence of Operation Hermetic Components Functional Component DefinitionsMechanical Components Electrical ComponentsActivating Test Mode Components TestingTesting the Electronic Control Boards for XQ Models Error Code ListingsTest EQ08 System Control Switch TestEQ08 System Control Switch Test Thermostat AdjustmentFAN Motor CapacitorsCapacitor Check with Capacitor Analyzer Capacitor ConnectionsTesting the Heating Element Electric Shock Hazard Heating ElementDrain PAN Valve Refrigeration 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 Compressor Checks Ground Test Single Phase Resistance TestExplosion Hazard Compressor ReplacementRecommended procedure for compressor replacement High TemperaturesRotary Compressor Special Troubleshooting and Service Routine Maintenance Sleeve / Drain Front CoverClearances Date Model Serial Room AIR Conditioner Unit Performance Test Data SheetUnit does not operate General Troubleshooting TipsDo not try to operate your air conditioner Cooling only Room AIR Conditioners Troubleshooting Tips Replace fuse, reset breaker. If repeats, check Fused separately Allowing discharge air to short Heat / Cool only Room AIR Conditioners Troubleshooting Tips Electronic Control Cool only Models Last character may vary Aham PUB. NO. RAC-1 Cooling Load Estimate Form Heat Gain from Quantity FactorsDAY Heat Load Form Following is an example using the heat load formInfiltration Windows & Doors AVG Windows & Doors Area, sq. ftRoom AIR Conditioners Limited Warranty Technical Support Contact Information Page Friedrich AIR Conditioning CO

XQ08M10, XQ10M10, XQ05M10, XQ06M10, EQ08M11 specifications

Friedrich offers a range of innovative air conditioning units designed to provide superior comfort and energy efficiency. Among its lineup, the XQ06M10, EQ08M11, XQ05M10, XQ08M10, and XQ10M10 models stand out due to their advanced technologies and user-friendly features.

The XQ series, with models like XQ06M10 and XQ05M10, is renowned for its sleek design and exceptional performance in cooling and heating environments. These models utilize a highly efficient compressor system that reduces energy consumption while maintaining optimal temperature control. The XQ06M10, for example, is designed for medium-sized rooms, featuring a cooling capacity that caters well to residential and small office settings.

On the other hand, the EQ08M11 model is known for its enhanced energy efficiency compared to traditional units, thanks to its inverter technology. This feature allows the compressor to adjust its speed according to the cooling demand, resulting in lower energy costs and a quieter operation. The EQ08M11 is also equipped with a multi-stage filtration system, improving indoor air quality by capturing dust, allergens, and pollutants.

The XQ08M10 and XQ10M10 cater to larger spaces, with their respective higher cooling capacities making them suitable for bigger living areas or small commercial settings. Both models boast an easy-to-use digital control panel, which requires minimal effort to adjust settings. Additionally, they include a programmable timer feature, allowing users to automate operation according to their daily schedules, further enhancing energy savings.

All these models showcase Friedrich’s commitment to durability and reliability, built with high-grade materials designed to withstand varying temperatures and humidity levels. The XQ series is compact, facilitating easy installation without compromising performance.

In summary, the Friedrich XQ06M10, EQ08M11, XQ05M10, XQ08M10, and XQ10M10 models combine cutting-edge technology with practicality, ensuring an efficient and enjoyable indoor climate. With features aimed at energy efficiency, ease of use, and effective air filtration, these units represent a smart investment for anyone looking to enhance their living or working environment.
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