Friedrich racservmn service manual Testing The Electronic Control XQ Boards & QME Boards

Page 63

Testing The Electronic Control

2001 XQ Boards & QME Boards

Checking Room Temperature:

1.Check the room temperature at the electronic control pad by pressing at the same time the "FAN SPEED" button and the temperature "UP" button on XQ models.

2.Check the room temperature at the electronic control pad by pressing at the same time the "FAN SPEED" button and the "WARMER" button on QME models. The indoor temperature will display for 10 seconds. Indoor temperature can be viewed in all modes, including the TEST mode. The display can be changed back to SET temperature by pressing any key, except the ON/OFF button, or after 10 seconds has elapsed.

Activating Test Mode: Activate test mode by pressing at the same time the "MODE" button and the temperature "DOWN" button on XQ models. LEDs for Hour, Start, and Stop will blink 1 bps while Test Mode is active. Activate test mode by pressing at the same time the "MONEY SAVER" button and the "FILTER ALERT" button on QME models. LED for the Filter Alert will blink 1 bps while Test Mode is active.

Test Mode has duration of 90 minutes. Test Mode can be activated under any conditions, including Off. Test Mode is cancelled by pressing the On/Off button, unplugging the unit, or when the 90 minutes is timed out. All settings revert to the factory default settings of Cool, 75 degrees F, Timer and Set Hour features are nonfunctional.

Test Mode overrides the three-minute lockout, all delays for compressor and fan motor start / speed change, and no delay when switching modes. Test Mode default settings are ON, Money Saver, 60 degrees F, and High fan speed.

Activating Error Code Mode: (Submode of Test Mode) Unit has to be in Test Mode to enter Error Code Mode

1.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.

Activate Error Code Mode by pressing at the same time the "A/C START" button and the "ON/ OFF" button on QME models. LED for the "TIMER ON/OFF" will flash 1 bps while Error Code Mode is active. Pressing the "WARMER" button will display 00. Consecutive presses will scroll through all error codes logged. Press the "COOLER" 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.

IMPORTANT

Error Codes are cleared from the log by exiting from Error Code Mode. To exit on XQ models, press Timer On/Off button. To exit QME models, press A/C Start and On/Off buttons. Or unplug unit to exit Error Code Mode. Plug unit in after 5 seconds to resume normal operation of unit.

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Contents 2003 Table of Contents 1st Digit Function RAC Serial Number Identification Guide00001 Page Data Evaporator AIR Operating Electrical Breaker Pressures Ratings Refrig Fuse Performance Evaporator AIR Operating Electrical Breaker Data SS10J10AR-A TEMP. DEG. F Pressures Ratings SC06H10E HeatingWY09A33F-A WY12A33F-A Heating BtuhAmps Refrigeration System Sequence of Operation Grounding Wire SizeFuse/Circuit BreakerThermal Overload External Winding TestChecking Compressor Efficiency FAN Motor Terminal Overload TestTerminal Overload Internal Checking the Internal OverloadResistor System Control Panel KQ Models Only- See Figure System Control PanelEQ Model Only See Figure System Control Panel YQ Model Only System Control Switch Test System Control Switch WE & WY Models See FigureSystem Control Panel See Figure System Control Switch KS, SS, KM, SM, SL Models See FigureHeat Pump & Electric Heat Models See Figure System Control SwitchSmart Center Electronic Control Center To SET Mode of OperationTo Adjust Temperature To Adjust FAN SpeedTo SET Hour Clock To SET the TimerTesting the Electronic Control Testing the Electronic Control Error Code ListingsThermostat Models ES, YS, EM, YM, EL, YL See Figure TestThermostat SQ & KQ Models See Figure Thermostat YQ Model Only See FigureThermostat Adjustment Defrost Thermostat Heat Pump Models OnlyThermostat Bulb Location Defrost Bulb Location Heat Pump Models Only CAPACITOR, RUN See FigureCapacitor Test Heat Pumps Reversing Valve See Figure Check Valve OperationTesting Reversing Valve Solenoid Coil Heat Pump Models Only See FigureTo Test Equipment Required VALVE, Drain PAN See FigureHeating Element See Figure Sealed Refrigeration System RepairsEquipment Must be Capable Hermetic Component ReplacementSpecial Procedure in the Case Compressor Motor Burnout Rotary Compressor Special Troubleshooting and ServiceMethod of Charging Undercharged Refrigerant SystemsOvercharged Refrigerant Systems Restricted Refrigerant System Routine Maintenance Troubleshooting Touch Test Chart To Service Reversing Valves Problem To Correct Troubleshooting CoolingProblem Possible Cause To Correct Cycles Problem Possible Cause To Correct Troubleshooting Heating Heat pumps Problem Possible Cause To Correct Off and the electric element is energized Troubleshooting Heating Cooling/Electric Models Troubleshooting Chart Cooling YES System Cools When Heating is DesiredModels SQ06J10B-B, SQ06J10B-A, SQ08J10C-A, SQ08J10D-A Models KQ08J10B-1, KQ08J10B-A, KQ08J10C-A Schematic YQ06J10B-A ModelModel SC06H10D 619-405-06 Alternate SL28J30B-A, SL35J30-A, SL35J30-BConductor Or Brown RED Blue To Capacitor Bracket Wiring Diagram YS12J33-A, YM18J34B-A, YL24J35C-A Model EQ08J11-A, EQ08J11-B IDT Ovld Neutral WE09A33E-B, WE12A33E-A, WE15A33-A WY09A33F-A, WY12A33G-A Checking Room Temperature Testing The Electronic Control XQ Boards & QME BoardsFriedrich AIR Conditioning CO

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