Friedrich 2009, 2008 service manual Heat / Cool only Room AIR Conditioners Troubleshooting Tips

Page 47

HEAT / COOL ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS

Problem

Possible Cause

Action

 

Heat anticipator (resistor) shorted (on applicable

Disconnect power to unit. Remove resistor from

 

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

 

models)

 

Feel resistor for heat. If not heat, replace resistor

Room temperature

 

 

 

uneven

Wide differential - partial loss of t-stat bulb charge

Replace t-stat & check

(Heating cycle)

 

 

 

 

Refer to appropriate wiring diagram. Resistor is

 

Incorrect wiring

energized during "ON" cycle of compressor or

 

 

fan.

Problem

Possible Cause

Action

 

Incorrect wiring

Refer to appropriate wiring diagram

 

Defrost control timer motor not advancing

Check for voltage at "TM" & "TM1" on timer. If no

 

(applicable models)

voltage, replace control

 

Defrost control out of calibration (applicable

If outside coil temperature is 25F or below, &

 

preselected time limit has elapsed, replace

 

models)

Unit will not defrost

defrost control

 

 

 

If contacts remain closed between terminals "2"

 

Defrost control contacts stuck

& "3" of the defrost control after preselected time

 

 

interval has passed, replace control

 

Defrost control bulb removed from or not making

Reinstall & be assured that good bulb to coil

 

good coil contact

contact is made

Problem

Possible Cause

Action

 

Exhaust or fresh air door open

Check if operating properly. Instruct customer on

 

proper use of control

 

 

 

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,

 

 

Does not heat

 

recommend additional unit or larger one

 

 

adequately

 

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

 

Outdoor t-stat open (applicable models)

control. If temperature is below 38°F, replace

 

 

control

 

Heater hi-limit control cycling on & off

Check for adequate fan air across heater. Check

 

control for open at 160°F & close at 150°F

 

 

 

Shorted supplementary heater

Ohmmeter check, approx. 32-35 ohms

 

Incorrect wiring

Check applicable wiring diagram

45

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Contents Room Air Conditioners 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 Typical Unit Components Introduction6th Digit Voltage 1 = 115 Volts 1st Digit Function2nd Digit 7th Digit Options 0 = Straight Cool & Heat Pump ModelsChassis Specifications for 2009, 2008 models Installation information / sleeve dimensions Performance Data for 2009, 2008 models Fire Hazard Electric Shock HazardMake sure the wiring is adequate for your unit To start unit To adjust temperature 60F 16C to 90F 32CHow to use the remote control* QuietMaster Programmable How to operate the Friedrich room air conditioner XQ models How to use the remote control XQ models How to operate the Friedrich room air conditioner Activating Test Mode Testing the Electronic Control Boards for QME & XQ ModelsChecking Room Temperature Testing the Electronic Control Error Code Listings KS, KM, SL Models See Figure Testing the Rotary Control SwitchesElectrical Components EQ08 System Control Switch TestFunctional Component Definitions Mechanical ComponentsThermostat Bulb Location Components TestingThermostat Adjustment TestDefrost Bulb Location Heat Pump Models Resistor Heat Anticipator See FigureDefrost Thermostat Heat Pump Models Only FAN Motor CapacitorsCapacitor Check with Capacitor Analyzer Capacitor ConnectionsDrain PAN Valve Testing the Heating Element Electric Shock HazardHeating Element See Figure Heating Element Heat Pump ModelsSmart FAN Operating Sequence / Characteristics and FeaturesRefrigeration Sequence of Operation Risk of Electric Shock Sealed Refrigeration System RepairsEquipment Required Equipment Must be CapableFreeze Hazard Method Of Charging / RepairsBurn 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 CoilExplosion Hazard Procedure For Changing Reversing ValveTouch Test in Heating/Cooling Cycle Compressor Checks Checking Compressor Efficiency Single Phase Resistance TestGround Test High Temperatures Compressor ReplacementRecommended procedure for compressor replacement Rotary Compressor Special Troubleshooting and Service AIR Filter Routine MaintenanceCoils and Base PAN Excessive Weight Hazard Blower Wheel / Housing / Condenser FAN / ShroudFront Cover Sleeve / DrainProblem 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 Problem Possible Cause Action Heat / Cool Room AIR Conditioners Trouble Shooting TipsYES System Cools When Heating is DesiredHeat Pump Malfunction of Valve Normal Function of ValveElectronic Control Cool only Models Electronic Control Cool only Models Electromechanical Control Cool only Models SL28L30-D,-E SL36L30A-D,A-E Page Electromechanical Control Cool with Electric Heat Models EL36L35A-D,A-E Electromechanical Control Heat Pump only Models YS13L33-D,-E YM18L34-D,-E YL24L35-E,-F Aham PUB. NO. RAC-1 DAY Cooling Load Estimate FormHeat Gain from Quantity Factors Heat Load Form Following is an example using the heat load formInfiltration Windows & Doors AVG Windows & Doors Area, sq. ftRoom AIR Conditioners Limited Warranty Page 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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