Friedrich racservmn Defrost Bulb Location Heat Pump Models Only, CAPACITOR, RUN See Figure

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DEFROST BULB LOCATION (Heat Pump Models Only)

(See Figure 36)

The defrost control bulb must be mounted securely and in the correct location to operate properly.

Figure 36

Defrost Thermostat Bulb

Location (All Heat Pump Models)

Retainer

Slide the bulb end of the thermostat defrost under the retainer as shown

RESISTOR: Heat Anticipator (See Figure 37)

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 ratings are as follows:

115 Volt - 5,000 ohms 3 watt

230 Volt - 20,000 ohms 3 watt

Figure 37

Resistor

CAPACITOR, RUN (See Figure 38)

A run capacitor is wired across the auxiliary and main winding of a single phase permanent split capacitor motor such as the compressor and fan motor. A single capacitor can be used for each motor or a dual rated capacitor can be used for both.

The capacitor's primary function is to reduce the line current while greatly improving the torque characteristics of a motor. The capacitor also reduces the line current to the motor by improving the power factor of the load. The line side of the capacitor is marked with a red dot and is wired to the line side of the circuit.

Figure 38

Dual Rated Run Capacitor Hook-up

CAPACITOR - TEST

1.Remove capacitor from unit.

2.Check for visual damage such as bulges, cracks, or leaks. 3. For dual rated, apply an ohmmeter lead to common

(C) terminal and the other probe to the compressor (HERM) terminal. A satisfactory capacitor will cause a deflection on the pointer, then gradually move back to infinity.

4.Reverse the leads of the probe and momentarily touch the capacitor terminals. The deflection of the pointer should be two times that of the first check if the capacitor is good.

5.Repeat steps 3 and 4 to check fan motor capacitor.

NOTE: A shorted capacitor will indicate a low resistance and the pointer will move to the "0" end of the scale and remain there as long as the probes are connected.

An open capacitor will show no movement of the pointer when placed across the terminals of the capacitor.

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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 Heating SC06H10EAmps WY09A33F-A WY12A33F-A HeatingBtuh Refrigeration System Sequence of Operation Breaker Wire SizeFuse/Circuit GroundingChecking Compressor Efficiency Thermal Overload ExternalWinding Test Checking the Internal Overload Terminal Overload TestTerminal Overload Internal 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 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 Adjust FAN Speed To SET Mode of OperationTo Adjust Temperature Smart Center Electronic Control CenterTesting the Electronic Control Error Code Listings To SET the TimerTesting the Electronic Control To SET Hour ClockThermostat YQ Model Only See Figure TestThermostat SQ & KQ Models 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 Check Valve Operation Heat Pumps Reversing Valve See FigureTo Test Testing Reversing ValveSolenoid Coil Heat Pump Models Only See Figure Sealed Refrigeration System Repairs VALVE, Drain PAN See FigureHeating Element See Figure Equipment RequiredRotary Compressor Special Troubleshooting and Service Hermetic Component ReplacementSpecial Procedure in the Case Compressor Motor Burnout 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

racservmn specifications

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