Friedrich R-410A service manual Make sure the wiring is adequate for your unit

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WARNING: Before operating unit

Make sure the wiring is adequate for your unit.

If you have fuses, they should be of the time delay type. Before you install or relocate this unit, be sure that the amperage rating of the circuit breaker or time delay fuse does not exceed the amp rating listed in Figure 1.

DO NOT use an extension cord.

The cord provided will carry the proper amount of electrical power to the unit; an extension cord will not.

Make sure that the receptacle is compatible with the air conditioner cord plug provided.

This insures proper grounding. If you have a two prong receptacle you will need to have it replaced with a grounded receptacle by a certified electrician. The grounded receptacle should meet all national and local codes and ordinances. Under no circumstances should you remove the ground prong from the plug. You must use the three prong plug furnished with the air conditioner.

Test the power cord

All Friedrich room air conditioners are shipped from the factory with a Leakage Current Detection Interrupter (LCDI) equipped power cord. The LCDI device meets the UL and NEC requirements for cord connected air conditioners.

To test your power supply cord:

1.Plug power supply cord into a grounded 3 prong outlet.

2.Press RESET (See Figure 2).

3.Press TEST (listen for click; Reset button trips and pops out).

4.Press and release RESET (listen for click; Reset button latches and remains in). The power supply cord is ready for operation.

NOTE: LCDI device is not intended to be used as a switch.

Once plugged in the unit will operate normally without the need to reset the LCDI device.

If the device fails to trip when tested or if the power supply cord is damaged it must be replaced with a new supply cord from the manufac- turer. We recommend you contact our Technical Assistance Line at

(800)541-6645 ext. 845. To expedite service, please have your model and serial number available.

WARNING

ELECTRICAL SHOCK HAZARD

Make sure your electrical receptacle has the same configuration as your air conditioner’s plug. If different, consult a Licensed Electrician.

Do not use plug adapters.

Do not use an extension cord.

Do not remove ground prong.

Always plug into a grounded 3 prong outlet. Failure to follow these instructions can result in electrical shock, serious injury or death.

 

CIRCUIT RATING

REQUIRED WALL

 

OR TIME DELAY

RECEPTACLE

MODEL

 

FUSE

 

 

 

AMP

VOLT

NEMA

 

NO.

 

 

 

 

XQ05 • XQ06 • XQ08 • XQ10

15

 

125

5-15R

 

 

EQ08

Figure 1

NOTE: Your LCDI device will resemble one of these illustrations.

RESET TEST

WARNING

TEST BEFORE EACH USE

1.PRESS RESET BUTTON

2.PLUG LDCI INTO POWER RECEPTACLE

3.PRESS TEST BUTTON, RESET BUTTON SHOULD

POP UP

4.PRESS TEST BUTTON, FOR USE

DO NOT USE IF ABOVE TEST

FAILS

WHEN GREEN LIGHT IS ON

IT IS WORKING PROPERLY

Figure 2

For the best cooling performance and highest energy efficiency

Keep the filter clean

Make sure that your air conditioner is always in top performing condition by cleaning the filter regularly.

Provide good air flow

Make sure the airflow to and from the unit is clear. Your air conditioner puts the conditioned air out at the top of the unit, and takes in unconditioned air at the bottom. Airflow is critical to good operation. It is just as important on the outside of the building that the airflow around the unit exterior is not blocked.

Unit placement

If your air conditioner can be placed in a window or wall that is shaded by a tree or another building, the unit will operate even more efficiently. Using drapes or blinds on the sunny side of the dwelling will also add to your unit’s efficiency.

Insulation

Good insulation will be a big help in maintaining desirable comfort levels. Doors should have weather stripping. Be sure to caulk around doors and windows.

Proper installation of chassis seal gasket

Make sure the seal gasket has been installed properly to minimize noise and improve efficiency. If the chassis seal gasket has not been installed, please refer to Step 14 of the installation instructions.

Also, if you switch from Cool mode to Fan Only, and switch back to COOL mode, there is a three minute delay before the compressor comes back on.

8

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Contents Volt EQ08M11A Volt XQ05M10A, XQ06M10A, XQ08M10A, XQ10M10ATable Of Contents Your safety and the safety of others are very important Important Safety InformationRefrigeration System Hazards Property Damage Hazards Introduction6th Digit Voltage 7th Digit Options 0 = Straight Cool5th Digit 00001Electrical Ratings Performance DataFire Hazard Electric Shock HazardMake sure the wiring is adequate for your unit How to operate the Friedrich room air conditioner XQ models How to use the remote control XQ models Operating Sequence / Characteristics and Features Electronic Control Sequence of OperationSmart FAN Mechanical Components Functional Component DefinitionsElectrical Components Hermetic ComponentsTesting the Electronic Control Boards for XQ Models Components TestingError Code Listings Activating Test ModeEQ08 System Control Switch Test EQ08 System Control Switch TestThermostat Adjustment TestCapacitor Check with Capacitor Analyzer CapacitorsCapacitor Connections FAN MotorTesting the Heating Element Electric Shock Hazard Heating ElementDrain PAN Valve Refrigeration Sequence of Operation Refrigeration system under high pressure 410A Sealed System Repair ConsiderationsEquipment Required 410A Sealed Refrigeration System RepairsEquipment Must be Capable Risk of Electric ShockMethod Of Charging / Repairs Burn HazardFreeze Hazard Overcharged Refrigerant Systems Undercharged Refrigerant SystemsRestricted Refrigerant System Compressor Checks Ground Test Single Phase Resistance TestRecommended procedure for compressor replacement Compressor ReplacementHigh Temperatures Explosion HazardRotary Compressor Special Troubleshooting and Service Routine Maintenance Sleeve / Drain Front CoverClearances Date Model Serial Room AIR Conditioner Unit Performance Test Data SheetProblem Possible Cause Possible Solution General Troubleshooting TipsGeneral Troubleshooting Tips Problem Possible Cause Action Cooling only Room AIR Conditioners Troubleshooting TipsReplace fuse, reset breaker. If repeats, check Fused separately Problem Possible Cause Action Heat / Cool only Room AIR Conditioners Troubleshooting Tips Electronic Control Cool only Models Page 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
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R-410A specifications

Friedrich R-410A is an advanced refrigerant widely used in HVAC (Heating, Ventilation, and Air Conditioning) systems, known for its high efficiency and environmental friendliness. As a hydrofluorocarbon (HFC) blend, R-410A has become the preferred alternative to R-22, which is being phased out due to its ozone-depleting potential. One of the main features of R-410A is its high latent heat of vaporization, which allows for efficient heat transfer and improved cooling performance in air conditioning units.

Technologically, R-410A operates at higher pressures than older refrigerants, meaning systems designed for R-410A need to be built with more robust components to safely handle these pressures. This results in a more compact system design that offers enhanced performance and reliability. The dual-component nature of R-410A—composed of difluoromethane (R-32) and pentafluoroethane (R-125)—provides an optimal balance of thermodynamic properties, leading to superior energy efficiency, especially in variable speed applications.

In terms of characteristics, R-410A has a higher cooling capacity, which enables HVAC systems to effectively cool larger spaces or run more efficiently when cooling smaller areas. The refrigerant is non-toxic and non-flammable, which enhances safety during its use. In addition, R-410A has a lower global warming potential relative to other refrigerants, making it a more environmentally responsible choice for modern cooling systems.

Moreover, R-410A systems typically require less refrigerant charge due to their efficiency, contributing to reduced greenhouse gas emissions. The adoption of R-410A aligns with regulatory trends aimed at minimizing the environmental impact of refrigerants in cooling applications.

Overall, the Friedrich R-410A refrigerant embodies a combination of technology and environmental stewardship, making it a cornerstone of contemporary HVAC design. Its ability to provide effective and energy-efficient cooling solutions while being compliant with modern environmental regulations positions R-410A as the refrigerant of choice for engineers and installers focused on sustainability and performance in air conditioning systems.
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