Friedrich H)A09K50L, R410A, H)A12K25L Troubleshooting Chart Cooling, Troubleshooting Chart Heating

Page 36

TROUBLESHOOTING CHART - COOLING

REFRIGERANT SYSTEM DIAGNOSIS COOLING

PROBLEM

 

PROBLEM

 

PROBLEM

 

 

 

 

 

 

 

 

 

LOW SUCTION PRESSURE

 

 

HIGH SUCTION PRESSURE

 

LOW HEAD PRESSURE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PROBLEM

HIGH HEAD PRESSURE

Low Load Conditions

Low Air Flow Across

Indoor Coil

Refrigerant System

Restriction

Undercharged

Moisture in System

High Load Conditions

High Air Flow Across

Indoor Coil

Reversing Valve not Fully Seated

Overcharged

Defective Compressor

Low Load Conditions

Refrigerant System

Restriction

Reversing Valve not Fully Seated

Undercharged System

Defective Compressor

High Load Conditions

Low Air Flow Across

Outdoor Coil

Overcharged

Non-Condensables (air)

TROUBLESHOOTING CHART - HEATING

REFRIGERANT SYSTEM DIAGNOSIS HEATING

PROBLEM

LOW SUCTION PRESSURE

Low Air Flow Across

Outdoor Coil

Refrigerant System

Restriction

Undercharged

Moisture in System

PROBLEM

 

PROBLEM

 

 

 

HIGH SUCTION PRESSURE

 

LOW HEAD PRESSURE

 

 

 

 

 

 

 

 

 

Outdoor Ambient Too High

 

Refrigerant System

for Operation in Heating

 

Restriction

 

 

 

 

 

 

 

 

 

Reversing Valve not

 

Reversing Valve not

Fully Seated

 

Fully Seated

 

 

 

 

 

 

 

 

 

Overcharged

 

Undercharged

 

 

 

 

 

 

 

 

 

Defective Compressor

 

Defective Compressor

 

 

 

 

 

PROBLEM

HIGH HEAD PRESSURE

Outdoor Ambient Too High For Operation In Heating

Low Air Flow Across

Indoor Coil

Overcharged

Non-Condensables (air)

in System

34

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Contents R v i c e M a n u a l R 4 1 0 a M o d e l s Technical Support Contact Information IntroductionTable of Contents Important Safety Information Your safety and the safety of others are very importantRefrigeration System Hazards Property Damage Hazards Serial Number Year Manufactured Month ManufacturedProduction RUN Number Product Line Chassis Specifications ModelExtended Cooling Performance Indoor WET Bulb TEMP. Degrees F AT 80 F D.BElectrical Requirements Electric Shock HazardRemote Thermostat and Low Voltage Control Connections RT5 Two speed fan RT4 One speed fanThermostat Connections Electronic Control Board Features Quiet Start/StopElectronic Control Configuration Electronic Control Error Code Diagnostics DiagnosticsTest Mode Vpak electronic control Features Thermostat CompatibilityExternal Static Pressure Explanation of charts Components Testing CapacitorsCapacitor Check with Capacitor Analyzer Capacitor ConnectionsComponents Testing Heater Elements and Limit SWITCHES’ SpecificationsDrain PAN Valve Refrigeration Assembly Refrigeration Sequence of OperationService CUT/SEVER HazardSealed Refrigeration System Repairs Equipment RequiredEquipment Must be Capable Risk of Electric ShockMethod Of Charging / Repairs Undercharged Refrigerant SystemsBurn Hazard Freeze HazardOvercharged Refrigerant Systems Restricted Refrigerant SystemHermetic Components Check Metering DeviceCheck Valve Capillary Tube SystemsTesting the Coil Reversing Valve DESCRIPTION/OPERATIONChecking the Reversing Valve Procedure For Changing Reversing Valve Touch Test in Heating/Cooling CycleFire Hazard Compressor Checks Single Phase Resistance Test External Overload Vpak 9, 12, 18 K BtusInternal Overload Vpak 24 K Btus Ground TestCompressor Replacement Recommended procedure for compressor replacementHigh Temperatures Routine Maintenance Electrical Shock HazardElectrical Troubleshooting Chart Cooling 9K BTU, 12K BTU, & 18K BTUElectrical Troubleshooting Chart Cooling 24K BTU Circuit Breakers areElectrical Troubleshooting Chart Heat Pump Heat Pump ModeTroubleshooting Chart Cooling Troubleshooting Chart HeatingVEA 09/12/18 with 2.5 KW, 3.4 KW or 5KW Electric HeatVHA 09/12/18 with 2.5 KW, 3.4 KW or 5KW Cool with Electric Heat Heat Pump with Electric Heat Cool with Electric Heat Heat Pump with Electric Heat Technical Service Data Technical Service DataVPK-ServMan-L Friedrich AIR Conditioning CO
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H)A09K25L, H)A12K50L, H)A09K50L, H)A24K10L, H)A24K25L 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.