Friedrich R410A manual Fuse 10 Amps 250 VaC

Page 19

ELECTRONIC CONTROL BOARD COMPONENTS IDENTIFICATION AND TESTING (Continued) (See wiring diagrams pages 41-46)

Front

VPAK 24K

Back

High Pressure Switch

 

 

Reversing Valve

Not Used

Not Used

High Speed

Not Used

Low Speed

Diagnostic

Service Module

Not Used

T-stat Terminals

Not Used

(Blue)

(Green)

Not Used

Transformer

115/230 Volts

FP F2 F1 D2 D1 C GH GL B Y W R

Low Voltage Interface Connection

Transformer voltage Selector Switch 115/230 Volts Ensure it is set at 230VAC

Sample board for Kuhl+ unit

Fuse 10 Amps

250 VaC

1.Test for power at L1 and L2 for 208/230 VAC. (Ensure the transformer voltage selector switch is set for 230 VAC)

2.Test the 10 amp/250 VAC fuse for continuity.

FOR THE FOLLOWING TESTS, ENSURE THE UNIT IS IN THE APPROPRIATE SETTINGS FOR THE TEST BEING PERFORMED. ENSURE THERE ARE NO ERROR CODES ACTIVE.

3.Testing the compressor relay and heat relays:

Test for power in and power out. If there is power in and no power out, replace the electronic control board. (208/230 to L2)

4.Testing the fan and reversing valve relays:

Test for power at the reversing valve and fan relays 1 or 3. (208/230 to L2)

5.Testing the transformer:

Test the low voltage terminal strip at: R and C for 24 VAC

F2 and F1 for 24 VAC

D2 and D1 for 24 VAC

Test the service module connector for 5 VDC (see prior page) Test the connectors for the thermistors for up to 5 VDC

If there is no voltage at any of the above, replace electronic control board.

6.Testing the thermistors:

Disconnect the thermistor and test for resistance value (see page 35)

7.Testing the high pressure switch (VPAK 24K only)

Test for 24 VAC at board, if there is no voltage, replace the electronic control.

Test the pressure switch for continuity, if none, replace it (switch is normally closed)

18

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Contents Single Package Vertical Air Conditioning System Table of Contents Your safety and the safety of others are very important Important Safety InformationRefrigeration System Hazards Property Damage Hazards IntroductionProduct Line 00001Serial Number Year Manufactured Production RUN NumberElectrical Requirements Chassis Specifi cations Cooling Performance Data Technical Service DataQuiet Start/Stop Electronic Control Board FeaturesHeat Mode in Cool with Electric Heat Units Compressor Lock Out Time Electric Shock Hazard Low Voltage Interface ConnectionsCUT/SEVER Hazard ServiceGround Air Intake Vpak 9-18K BTU Units Components IdentificationAir Intake Front Side Vpak 24K BTU Units Components IdentificationError Codes and Alarm Status Components Testing Fuse 10 Amps 250 VaC Blower / FAN Motor Test Capacitor Check with Capacitor AnalyzerCapacitor Connections Blower / FAN MotorDrain PAN Valve Heater Elements and Limit SWITCHES’ SpecificationsExternal Static Pressure Explanation of charts Refrigeration Sequence of Operation Refrigeration AssemblyRisk of Electric Shock Sealed Refrigeration System RepairsEquipment Required Equipment Must be CapableFreeze Hazard Method Of Charging / RepairsUndercharged Refrigerant Systems Burn HazardRestricted Refrigerant System Overcharged Refrigerant SystemsCapillary Tube Systems Cooling ModeHeating Mode Hermetic Components CheckReversing Valve DESCRIPTION/OPERATION Touch Test in Heating/Cooling Cycle Procedure For Changing Reversing ValveFire Hazard Determine L.R.V Single Phase ConnectionsSingle Phase Running and L.R.A. Test Locked Rotor Voltage L.R.V. TestGround Test Single Phase Resistance TestExternal Overload Vpak 9, 12, 18 K Btus Internal Overload Vpak 24 K BtusHigh Temperatures Recommended procedure for compressor replacementElectrical Shock Hazard Routine MaintenanceRoom AIR Conditioner Unit Performance Test Data Sheet THERMISTORS’ Resistance Values 9K BTU, 12K BTU, & 18K BTU Electrical Troubleshooting Chart CoolingCompressor outdoor Electrical Troubleshooting Chart Cooling 24K BTUHeat Pump Mode Electrical Troubleshooting Chart Heat PumpTroubleshooting Chart Heating Heat Pump Troubleshooting Chart CoolingHeat Pump with Electric Heat Remote Wall Thermostat Wiring DiagramsGH GL B Y RT6 6TR Cool with Electric HeatGH GL B Y W R GH GL O/B Y W Wiring Diagram Heat Pump EH 5KW, 10.0KW Model Description Photo Friedrich Air Conditioning Company Vpak 9K-18K BTU/h Models Vpak 9K-18K BTU/h Models Vpak 9K-18K BTU/h Models Vpak 9K-18K BTU/h Models 9K-18K BTU/h Models Vpak Parts List Vpak 24K BTU/h Models Vpak 24K BTU/h Models Vpak 24K BTU/h Models Vpak 24K BTU/h Models 24K BTU/h Models Vpak Parts List Technical Support Contact Information Friedrich AIR Conditioning CO
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R410A specifications

Friedrich R410A is a refrigerant blend that has become a cornerstone in the HVAC industry, particularly for air conditioning systems. This hydrofluorocarbon (HFC) is known for its efficiency and environmentally friendly properties, making it a popular alternative to older refrigerants like R22.

One of the main features of R410A is its exceptional thermal efficiency. It has a higher cooling capacity compared to R22, which allows for smaller and more efficient equipment. This efficiency translates to reduced energy consumption and lower operating costs for users. Additionally, the higher pressure capability of R410A enables the design of more compact systems, which is particularly beneficial for residential and commercial applications where space is often limited.

R410A is characterized by its zero ozone depletion potential (ODP), which is a significant advantage over its predecessors. This makes it a more environmentally responsible choice, aligning with global initiatives to phase out substances that harm the ozone layer. However, it is essential to note that while R410A does not deplete the ozone, it does have a global warming potential (GWP) of approximately 2,088, making it less favorable in terms of climate impact compared to natural refrigerants.

In terms of technology, R410A is typically utilized in systems that are designed specifically for this refrigerant. Equipment compatible with R410A often features advanced components that can handle the higher pressures required. Many modern air conditioning systems equipped with R410A also incorporate variable-speed compressors and advanced electronic controls, enhancing overall performance and comfort.

Additionally, R410A systems often come equipped with variable refrigerant flow (VRF) technology, which allows for precise temperature control in multiple zones of a building. This versatility makes R410A an ideal choice for both residential and commercial installations, providing optimal comfort throughout various spaces.

In summary, Friedrich R410A stands out due to its high energy efficiency, zero ozone depletion potential, and suitability for modern HVAC technologies. As the industry moves towards more sustainable practices, R410A serves as a reliable refrigerant that balances performance with environmental responsibility. It’s a significant choice for anyone looking to invest in efficient and eco-friendly heating and cooling solutions.