Friedrich 2003 System Control Panel KQ Models Only- See Figure, EQ Model Only See Figure

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SYSTEM CONTROL PANEL ("KQ" Models Only- See Figure 10)

The KQ Model unit uses a five position control switch to regu- late the operation of the unit. Function of each position (clock- wise rotation) is as follows:

Figure 10

System Control Panel (KQ Models Only)

1."Off" - Turns everything off.

2."Hi Fan" - Maximum circulation of filtered room air (no cooling.)

3."Low Fan" - Fan runs slower for less circulation of fil- tered room air.

4."Low Cool" - Fan runs slowly for quiet operation when maximum cooling is not needed.

5."Hi Cool" - Highest fan speed for maximum cooling.

SYSTEM CONTROL SWITCH - TEST (See Figure 11) Turn knob to phase of switch to be tested. There must be continuity as fol- lows:

1."Hi Fan" Position - between terminals "L1" and "H".

2."Low Fan" Position - between terminals "L1" and "L".

3."Low Cool" Position - between terminals "L1" and "L" and "C".

4."Hi Cool" Position - between terminals "L1" and "H" and "C".

Figure 11

System Control Switch

(KQ Models Only)

SYSTEM CONTROL PANEL

EQ Model Only (See Figure 12 )

The EQ Model unit uses a six-position control switch to regulate the operation of the unit. Function of each position (clockwise rotation) is as follows:

1.“Off” Turns everything off.

2.“Fan Only” To circulate filtered room air, but no cooling or heating

3.“Hi Cool” Fan runs continuously, compressor goes on and off to maintain the selected room temperature

4.“Lo Cool” fan runs continuously, compressor goes on and off to maintain the selected room temperature.

5.“Lo Heat” Fan runs continuously, heating turns on and off to maintain the selected room temperature.

6.Hi Heat” Fan runs continuously, heating turns on and off to maintain the selected room temperature.

Figure 12

System Control Panel (EQ Models only)

SYSTEM CONTROL SWITCH – TEST (See Figure 13)

Turn knob to phase of switch to be tested. There must be continuity as follows:

1.“Fan Only” Position – between terminals “MS” and “H”

2.“Hi Cool” Position – between terminals “L1” and “C” and “MS” and “H”

3.“Low Cool” Position – between terminals “L1” and “C” and “MS” and “LO”

4.“Low Heat” Position – between terminals “L2” and “2” and “MS” and “LO”

5.“Hi Heat” Position – between terminals “L2” and “2” and “MS” and “H”

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Contents 2003 Table of Contents 00001 1st Digit FunctionRAC Serial Number Identification Guide 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 HeatingAmps WY09A33F-A WY12A33F-A HeatingBtuh Refrigeration System Sequence of Operation Fuse/Circuit Wire SizeBreaker GroundingChecking Compressor Efficiency Thermal Overload ExternalWinding Test Terminal Overload Internal Terminal Overload TestChecking the Internal Overload FAN MotorResistor EQ Model Only See Figure System Control Panel KQ Models Only- See FigureSystem Control Panel 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 SwitchTo Adjust Temperature To SET Mode of OperationTo Adjust FAN Speed Smart Center Electronic Control CenterTesting the Electronic Control To SET the TimerTesting the Electronic Control Error Code Listings To SET Hour ClockThermostat SQ & KQ Models See Figure TestThermostat YQ Model Only See Figure Thermostat Models ES, YS, EM, YM, EL, YL See FigureThermostat Bulb Location Thermostat AdjustmentDefrost Thermostat Heat Pump Models Only Capacitor Test Defrost Bulb Location Heat Pump Models OnlyCAPACITOR, RUN See Figure Heat Pumps Reversing Valve See Figure Check Valve OperationTo Test Testing Reversing ValveSolenoid Coil Heat Pump Models Only See Figure Heating Element See Figure VALVE, Drain PAN See FigureSealed Refrigeration System Repairs Equipment RequiredSpecial Procedure in the Case Compressor Motor Burnout Hermetic Component ReplacementRotary Compressor Special Troubleshooting and Service Equipment Must be CapableMethod 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