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Friedrich 2009, 2008 service manual Refrigerant System Diagnosis - Heating Cycle, Heat Pump

Models: 2009 2008

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TROUBLESHOOTING CHART — HEATPUMP

REFRIGERANT SYSTEM DIAGNOSIS - HEATING CYCLE

LOW SUCTION PRESSURE HIGH SUCTION PRESSURE


Low Airﬂow			Outdoor Ambient Too High
Across Outdoor Coil			for Operation in Heating


Refrigerant System			Reversing Valve not
Restriction			Fully Seated


Undercharged			Overcharged


Moisture in System			Defective Compressor

LOW HEAD PRESSURE

Refrigerant System

Restriction

Reversing Valve not Fully Seated

Undercharged

Defective Compressor

HIGH HEAD PRESSURE

Outdoor Ambient Too High For Operation In Heating

Low Airﬂow Across

Indoor Coil

Overcharged

Noncondensables (air)

in System

ELECTRICAL TROUBLESHOOTING CHART — HEAT PUMP

HEAT PUMP

SYSTEM COOLS WHEN

HEATING IS DESIRED.



Is Line Voltage			Is the Selector Switch
Present at the Solenoid		NO	Set for Heat?
	YES

Is the Solenoid Coil Good?			Replace the Solenoid Coil
Is the Solenoid Coil Good?		NO	Replace the Solenoid Coil
	YES	NO



Reversing Valve Stuck


Replace the Reversing Valve

Page 49

Image 49

Friedrich 2009, 2008 Refrigerant System Diagnosis - Heating Cycle, Electrical Troubleshooting Chart - Heat Pump

Contents

Power ModelsTimer Warmer Power Money Saver Set HrFRIEDRICH AIR CONDITIONING CO TECHNICAL SUPPORT CONTACT INFORMATIONPost Office Box 1540 · San Antonio, Texas 4200 N. Pan Am Expressway · San Antonio, TexasTable Of Contents PERSONAL INJURY OR DEATH HAZARDS IMPORTANT SAFETY INFORMATIONELECTRICAL HAZARDS MECHANICAL HAZARDS REFRIGERATION SYSTEM HAZARDSFIRE DAMAGE HAZARDS PROPERTY DAMAGE HAZARDSWATER DAMAGE HAZARDS TYPICAL UNIT COMPONENTS IntroductionUnit Identification Model Number Code S S 08 L 1 0 ERAC Serial Number Identification Guide 1st Digit - FunctionElectrical Characteristics 60 Hertz Chassis Specifications for 2009, 2008 modelsEER COP ModelCircuit Rating / Breaker installation information / sleeve dimensionsWindow Mounting Kits MinimumPERFORMANCE DATA for 2009, 2008 models HACR Heating Air Conditioning and Refrigeration electrical DATAELECTRIC SHOCK HAZARD FIRE HAZARDTest the power cord Make sure the wiring is adequate for your unitKeep the filter clean Unit placementTo set the timer To adjust fan speedTo start unit To set mode of operationTo set the hour clock To adjust temperatureTo set the timer To adjust fan speedTo adjust fan speed To adjust temperatureTo set the timer To start unitTo adjust temperature setting How to use the remote control XQ modelsTo set the timer To adjust fan speedTemperature control How to operate the Friedrich room air conditionerMoney Saver switch QuietMaster / Twintemp modelsFunction Control EQ08 modelsChecking Room Temperature Function Control1.Activate Error Code Mode by pressing the “TIMER ON/ OFF” button on XQ models. LED for the “TIMER ON/ OFF” will flash 1 bps while Error Code Mode is active. Pressing the “TEMP/HR ” button will display 00. Consecutive presses will scroll through all error codes logged. Press the “TEMP/HR ” button to see the reverse order of all error codes logged. When the end of logged error codes is reached the temperature set point will appear ELECTRIC SHOCK HAZARD TESTING THE ROTARY CONTROL SWITCHESKS, KM, SL Models See Figure “EQ08” SYSTEM CONTROL SWITCH - TEST FUNCTIONAL COMPONENT DEFINITIONSMECHANICAL COMPONENTS ELECTRICAL COMPONENTSTHERMOSTAT ADJUSTMENT COMPONENTS TESTINGTHERMOSTAT “EQ08” Models See Figure ELECTRIC SHOCK HAZARDRESISTOR Heat Anticipator See Figure COMPONENTS TESTING ContinuedDEFROST THERMOSTAT Heat Pump Models Only ELECTRIC SHOCK HAZARDCapacitor Check with Capacitor Analyzer CAPACITORSCapacitor Connections COMPONENTS TESTING ContinuedTESTING THE HEATING ELEMENT COMPONENTS TESTING ContinuedHEATING ELEMENT See Figure HEATING ELEMENT Heat Pump ModelsCompressor Time Delay 180 seconds OPERATING SEQUENCE / CHARACTERISTICS AND FEATURESReturn Air Temperature Sensor Mode ControlREFRIGERATION SEQUENCE OF OPERATION Refrigerant Charging SEALED REFRIGERATION SYSTEM REPAIRSEQUIPMENT REQUIRED EQUIPMENT MUST BE CAPABLE OFBURN HAZARD Method Of Charging / RepairsFREEZE HAZARD BURN HAZARDOvercharged Refrigerant Systems Undercharged Refrigerant SystemsELECTRIC SHOCK HAZARD HIGH PRESSURE HAZARDRestricted Refrigerant System METERING DEVICE HERMETIC COMPONENTS CHECKCHECK VALVE Capillary Tube SystemsELECTRIC SHOCK HAZARD REVERSING VALVE DESCRIPTION/OPERATIONCHECKING THE REVERSING VALVE TESTING THE COILELECTRIC SHOCK HAZARD HIGH PRESSURE HAZARDTouch Test in Heating/Cooling Cycle Procedure For Changing Reversing ValveBURN HAZARD HIGH PRESSURE HAZARDSingle Phase Running and L.R.A. Test Single Phase ConnectionsCOMPRESSOR CHECKS Locked Rotor Voltage L.R.V. TestELECTRIC SHOCK HAZARD Single Phase Resistance TestGROUND TEST CHECKING COMPRESSOR EFFICIENCYRecommended procedure for compressor replacement COMPRESSOR REPLACEMENTHIGH TEMPERATURES RISK OF ELECTRIC SHOCKHIGH PRESSURE HAZARD ELECTRIC SHOCK HAZARDEXPLOSION HAZARD EXCESSIVE WEIGHT HAZARD ROUTINE MAINTENANCEBLOWER WHEEL / HOUSING / CONDENSER FAN / SHROUD ELECTRIC SHOCK HAZARDROUTINE MAINTENANCE Continued Problem ProblemProblem Possible CauseProblem ProblemProblem ProblemProblem ProblemProblem ProblemProblem ProblemProblem ProblemProblem ProblemProblem Possible CauseProblem TROUBLESHOOTING CHART - HEATPUMPREFRIGERANT SYSTEM DIAGNOSIS - COOLING CYCLE Possible CauseREFRIGERANT SYSTEM DIAGNOSIS - HEATING CYCLE ELECTRICAL TROUBLESHOOTING CHART - HEAT PUMPHEAT PUMP TROUBLESHOOTING CHART - HEATPUMPPOSSIBLE CAUSES TEMPERATURE OF VALVE BODYCORRECTIONS NORMAL FUNCTION OF VALVEXQ05L10A-C XQ06L10A-C XQ08L10A-B,A-E ELECTRONIC CONTROL COOL ONLY MODELSXQ10L10A-C XQ12L10A-B,A-C ELECTRONIC CONTROL COOL ONLY MODELS ELECTROMECHANICAL CONTROL COOL ONLY MODELS ELECTROMECHANICAL CONTROL COOL ONLY MODELS SL28L30-D,-E SL36L30A-D,A-EPage COOL WITH ELECTRIC HEAT MODELS ELECTROMECHANICAL CONTROLES12L33-D,-E ES16L33-C,-D EM18L34-C EM24L34-B ELECTROMECHANICAL CONTROL COOL WITH ELECTRIC HEAT MODELS EL36L35A-D,A-EYS09L10-F,-G ELECTROMECHANICAL CONTROL HEAT PUMP ONLY MODELSYS13L33-D,-E YM18L34-D,-E HEAT PUMP WITH ELECTRIC HEAT MODELSELECTROMECHANICAL CONTROL ELECTROMECHANICAL CONTROL HEAT PUMP WITH ELECTRIC HEAT MODELS YL24L35-E,-FFORM FOR ROOM AIR CONDITIONERS INSTRUCTIONS FOR USING COOLING LOAD ESTIMATEAHAM PUB. NO. RAC-1 HEAT GAIN FROM COOLING LOAD ESTIMATE FORMQUANTITY FACTORSFollowing is an example using the heat load form HEAT LOAD FORMWINDOWS & DOORS Area, sq. ft HEATING LOAD FORM FRIEDRICH ROOM UNIT HEAT PUMPSINFILTRATION - WINDOWS & DOORS AVG FIRST YEAR ROOM AIR CONDITIONERS LIMITED WARRANTYSECOND THROUGH FIFTH YEAR Page FRIEDRICH AIR CONDITIONING CO TECHNICAL SUPPORT CONTACT INFORMATIONPost Office Box 1540 · San Antonio, Texas 4200 N. Pan Am Expressway · San Antonio, TexasPost Office Box 1540 · San Antonio, Texas FRIEDRICH AIR CONDITIONING CORAC-ServMan