Friedrich 2003 service manual System Control Switch, Heat Pump & Electric Heat Models See Figure

Page 21

SYSTEM CONTROL SWITCH - TEST

Disconnect leads from control switch (See Figure 25) There must be continuity as follows:

Figure 25

SYSTEM CONTROL SWITCH (See Figure 26)

(Heat Pump & Electric Heat Models)

An eight position control switch is used to regulate the operation of the fan motor and compressor. The compressor can be operated with the fan operating at low, medium or high speed in the cooling or heating mode. The fan motor can also be operated independently on medium speed. See switch section as indicated on decorative control panel.

1."Off" Position - everything is off.

2."Lo Cool" Position - fan operates on low speed, compressor is on.

3."Med Cool" Position - fan operates on medium speed, compressor is on.

4."Hi Cool" Position - fan operates on high speed, compressor is on.

5."Hi Heat" Position - fan operates on high speed, compressor or electric heater is on.

6."Med Heat" Position - fan operates on medium speed, compressor or electric heater is on.

Figure 26

System Control Switch

SYSTEM CONTROL SWITCH

(Heat Pump & Electric Heat Models) (See Figure 27)

An eight position control switch is used to regulate the operation of the fan motor and compressor. The compressor can be operated with the fan operating at low, medium or high speed in the cooling or heating mode. The fan motor can also be operated independently on medium speed. See switch section as indicated on decorative control panel.

1."Off" Position - everything is off.

2."Lo Cool" Position - fan operates on low speed, compressor is on.

3."Med Cool" Position - fan operates on medium speed, compressor is on.

4."Hi Cool" Position - fan operates on high speed, compressor is on.

5."Hi Heat" Position - fan operates on high speed, compressor or electric heater is on.

6."Med Heat" Position - fan operates on medium speed, compressor or electric heater is on.

7."Lo Heat" Position - fan operates on low speed, compressor or electric heater is on.

8."Fan Only" Position - operates on medium speed.

NOTE: Heat pump models with electric heat - in the heat position, heating element only will be energized when outdoor temperature is below the operating range of the heat pump.

Figure 27

System Control Panel

Heat Pump & Electric Heat Models

(YS, ES, YM, EM, YL & EL)

21

Image 21

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 Fuse/Circuit Wire SizeBreaker GroundingThermal Overload External Winding TestChecking Compressor Efficiency Terminal Overload Internal Terminal Overload TestChecking the Internal Overload FAN MotorResistor 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 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 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 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