Friedrich 2003 service manual Resistor

Page 16

SYSTEM CONTROL SWITCH - TEST (See Figure 7)

Disconnect the leads from the control switch. There must be continuity as follows:

1."Off" Position - no continuity between terminals.

2."Lo Cool" Position - between terminals "L1" and "C", "Lo" and MS".

3."Med Cool" Position - between terminals "L1" and "C", "M" and "MS".

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

5."Fan Only" Position - between terminals "L1" and "2".

RESISTOR

(Heat Anticipator) (SQ Only)

Failure of the resistor will cause prolonged "off" and "on" cycles of the unit. When replacing a resistor, be sure and use the exact replacement. Resistor rating 115 Volts 12500 ohm, 1.05 watts.

Figure 7

System Switch

(SQ Only)

MONEYSAVER® SWITCH (Rocker Switch- See Figure 8) This rocker switch can be depressed to either YES or NO. In the YES position you will get the most economical operation. Both the fan and the compressor will cycle on and off together, maintaining the selected temperature at a more constant level and reducing the humidity more efficiently. This control will only operate when the unit is in a cooling mode. In the NO position, the fan will run constantly as long as the unit is in the cooling mode. Disconnect leads from switch. Depress switch to function being tested.

1.When YES is depressed, there should be continuity between terminals "1" and "2."

2.When NO is depressed, there should be continuity between terminals "2" and "3."

Rocker Switch

Figure 8

SYSTEM CONTROL PANEL (XQ MODELS ONLY)

(See Figure 9)

1.Power button turns the unit on and off.

2.Fan Speed button allows selection between three cool- ing speeds and fan only.

3.The mode button allows the unit to switch between modes (i.e., fan only, cooling, etc.).

4.Timer on/off button allows for programmed on and off times (one hour increments).

5.The plus and minus buttons allows adjustments for room air temperature.

6.Set hour button enables the unit’s timer on/off feature to operate for times selected.

7.Exhaust/vent shut feature (if applicable) allows for room air to continuously recalculate or if enabled, to exhaust stale air.

Note: Please refer the troubleshooting guides on page if the control is malfunctioning.

Figure 9

System Control Panel (XQ Models Only)

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Contents 2003 Table of Contents RAC Serial Number Identification Guide 1st Digit Function00001 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 Heating SC06H10EBtuh WY09A33F-A WY12A33F-A HeatingAmps Refrigeration System Sequence of Operation Wire Size Fuse/CircuitBreaker GroundingWinding Test Thermal Overload ExternalChecking Compressor Efficiency Terminal Overload Test Terminal Overload InternalChecking the Internal Overload FAN MotorResistor System Control Panel System Control Panel KQ Models Only- See FigureEQ Model Only See Figure System Control Panel YQ Model Only System Control Switch WE & WY Models See Figure System Control Switch TestSystem Control Switch KS, SS, KM, SM, SL Models See Figure System Control Panel See FigureSystem Control Switch Heat Pump & Electric Heat Models See FigureTo SET Mode of Operation To Adjust TemperatureTo Adjust FAN Speed Smart Center Electronic Control CenterTo SET the Timer Testing the Electronic ControlTesting the Electronic Control Error Code Listings To SET Hour ClockTest Thermostat SQ & KQ Models See FigureThermostat YQ Model Only See Figure Thermostat Models ES, YS, EM, YM, EL, YL See FigureDefrost Thermostat Heat Pump Models Only Thermostat AdjustmentThermostat Bulb Location CAPACITOR, RUN See Figure Defrost Bulb Location Heat Pump Models OnlyCapacitor Test Check Valve Operation Heat Pumps Reversing Valve See FigureSolenoid Coil Heat Pump Models Only See Figure Testing Reversing ValveTo Test VALVE, Drain PAN See Figure Heating Element See FigureSealed Refrigeration System Repairs Equipment RequiredHermetic Component Replacement Special Procedure in the Case Compressor Motor BurnoutRotary Compressor Special Troubleshooting and Service Equipment Must be CapableUndercharged Refrigerant Systems Method of ChargingOvercharged Refrigerant Systems Restricted Refrigerant System Routine Maintenance Troubleshooting Touch Test Chart To Service Reversing Valves Troubleshooting Cooling Problem To CorrectProblem 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 System Cools When Heating is Desired YESModels SQ06J10B-B, SQ06J10B-A, SQ08J10C-A, SQ08J10D-A Models KQ08J10B-1, KQ08J10B-A, KQ08J10C-A Schematic Model YQ06J10B-AModel SC06H10D 619-405-06 SL28J30B-A, SL35J30-A, SL35J30-B AlternateConductor 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 Testing The Electronic Control XQ Boards & QME Boards Checking Room TemperatureFriedrich AIR Conditioning CO