Friedrich 2009, 2008 service manual Heat Pump Troubleshooting

Page 39

HEAT PUMP TROUBLESHOOTING

Problem

Possible Cause

Action

 

 

Disconnect power to unit. Remove resistor

 

Heat anticipator (resistor) shorted

from t-stat bulb block. Plus in unit & allow to

 

(on applicable models)

operate. Feel resistor for heat. If not heat,

Room

 

replace resistor

temperature

Wide differential - partial loss of

Replace t-stat & check

uneven

t-stat bulb charge

 

(Heating cycle)

 

Refer to appropriate wiring diagram. Resistor

 

Incorrect wiring

is energized during “ON” cycle of compressor

 

 

or fan.

 

Defective thermistor or control board

Replace thermistor or electronic control board

 

 

 

Problem

Possible Cause

Action

 

Incorrect wiring

Refer to appropriate wiring diagram

 

Defrost control out of calibration

If outside coil temperature is 25°F or below,

 

& preselected time limit has elapsed, replace

 

(applicable models)

 

defrost control

 

 

Unit will not

 

If contacts remain closed between terminals

Defrost control contacts stuck

“2” & “3” of the defrost control after

defrost

preselected time interval has passed, replace

 

 

 

 

control

 

Defrost control bulb removed from

Reinstall & be assured that good bulb to coil

 

or not making good coil contact

contact is made

 

Outdoor coil thermistor

Replace thermistor or electronic control board

 

 

 

Problem

Possible Cause

Action

 

Dirty filter

Clean as recommended in Owner’s Manual

 

 

Check heat rise across coil. If unit operates

 

Unit undersized

efficiently, check if insulation can be added

 

to attic or walls. If insulation is adequate,

 

 

 

 

recommend additional unit or larger one

Does not heat

Outdoor t-stat open (applicable

T-stat should close at 38°F. Check continuity

of control. If temperature is below 38°F,

models)

adequately

replace control

 

 

Heater hi-limit control cycling on &

Check for adequate fan air across heater.

 

Check control for open at 160°F & close at

 

off

 

150°F

 

 

 

Shorted supplementary heater

Ohmmeter check, approx. 32-35 ohms

 

 

 

 

Incorrect wiring

Check applicable wiring diagram

 

 

 

 

Defective thermistor or electronic

Replace thermistor or electronic control board

 

control board

 

 

37

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Contents WallMaster Thru-the-Wall Technical Support Contact Information Table Of Contents Your safety and the safety of others are very important Important Safety InformationRefrigeration System Hazards Property Damage Hazards Introduction5th Digit Alphabetical Modifier 6th Digit Voltage 1st Digit Function2nd Digit Type 3rd & 4th Digits Approximate BTU/HR Cooling2008 / 2009 Performance Data Fire Hazard Electric Shock HazardFunctional Components How to operate the Friedrich WallMaster To set the timer Using the remote control Activating Test Mode Error Code ModeTesting the Electronic Control Checking Room TemperatureE7 Motor Operation E9 Heat Pump Failure Error Codes Listing for WS ModelsError Codes Listing for WE/WY Models Reboot the Control PanelSystem Control Switch Test For Units with Rotary Controls System Control SwitchComponents Testing Electronic Control OperationThermostat Capacitor Check with Capacitor Analyzer CapacitorsDefrost Thermostat Defrost Bulb LocationDrain PAN Valve Heating ElementRefrigeration System Sequence of Operation Risk of Electric Shock Sealed Refrigeration System RepairsEquipment Required Equipment Must be CapableMethod Of Charging / Repairs Burn HazardFreeze Hazard Overcharged Refrigerant Systems Undercharged Refrigerant SystemsRestricted Refrigerant System Capillary Tube Systems Hermetic Components CheckMetering Device Check ValveReversing Valve DESCRIPTION/OPERATION Checking the Reversing Valve Testing the CoilProcedure For Changing Reversing Valve Touch Test in Heating/Cooling CycleExplosion Hazard Compressor Checks Single Phase Resistance Test Ground TestChecking Compressor Efficiency Compressor Replacement Recommended procedure for compressor replacementHigh Temperatures Rotary Compressor Special Troubleshooting and Service AIR Filter Routine MaintenanceCoils and Base PAN Excessive Weight Hazard Blower Wheel / Housing / Condenser FAN / ShroudFront Cover Sleeve / DrainCooling only Room AIR Conditioners Troubleshooting Tips Replace fuse, reset breaker. If repeats, check Fused separately Oversized unit Operate in MoneySaver position Heat Pump Troubleshooting Heat Pump Troubleshooting Malfunction of Valve Normal Function of ValveWS14B10A-E WS10B30A-D WS13B30B-E,B-F WS16B30A-D,A-E WE10B33C-A WE13B33C-A WE16B33C-A WY10B33C-A WY13B33C-A WE10B33A-C WE13B33B-D,B-E WE16B33A-C,A-D WY10B33A-C,A-D WY13B33A-C,A-D Installation Accessories Mounting Hardware Provided Wall PreparationDescription QTY MECHANICALCUT/SEVER Hahazard Installation RequirementsMECHANICALCUT/SEVER Hazard Sealing Gasket Installation Instructions Mechanical Hazard MECHANICALCUT/SEVER Hazard Installation Instructions for Internal Drain KIT IDKExcessive Weight Hazard MECHANICALCUT/SEVER Hazard MECHANICALCUT/SEVER Hazard MECHANICALCUT/SEVER Hazard Second Through Fifth Year First YearPage 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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