Friedrich 2003 service manual Table of Contents

Page 2

Table of Contents

 

Unit Identification

3

Unit Specifications

4

Unit Performance

5-11

Refrigeration Sequence of Operation

12

Electrical Rating Tables

13

Compressor

14

Thermal Overload (External)

14

Thermal Overload (Internal)

15

Fan Motor

15

System Switches/Controls

15-24

Thermostats (Indoor)

24-25

Thermostats (Defrost)

25-26

Resistor (Heat Anticipator)

26

Capacitor, Run

26

Check Valve

27

Heat Pump Reversing Valve

27

Solenoid Coil (Heat Pump Models)

28

Valve, Drain Pan

29

Heating Element

29

Sealed Refrigeration Repairs

29-30

Refrigerant Charging

30-31

Undercharged Refrigerant Systems

31-32

Overcharged Refrigerant Systems

32

Restricted Refrigerant System

33

Routine Maintenance

34

Troubleshooting

34-45

Wiring Diagrams

 

"RS", "RM", ................................................... 46

"SQ"

47

"KQ"

48-49

"XQ"

50

"YQ"

51

"SC"

52

"SS", "SM"

53

"SL"

54

"KS", "KM", "KL"

55

"ES", "EM", "EL", "EK"

56

"YS13", "YM", "YL"

57

"YS09"

58

"EQ"

59

"WS"

60

"WE"

61

"WY"

62

Testing XQ and QME Boards

63

Typical Unit Components

Fresh Air

Compressor

Capillary Tube

Liquid Filter Driers

Reversing Valve

Condenser Coil

(some models)

 

Front Cover

Discharge Air

 

System Switches

Outdoor Grille

 

Evaporator Coil

Sleeve

 

Return Air Grille/Filter

 

Blower Wheel

 

Blower Motor

Condenser Fan Blade

 

Basepan

Introduction

This service manual is designed to be used in conjunction with the installation manuals provided with each air conditioning system component.

This service manual was written to assist the professional RAC service technician to quickly and accurately diagnose and repair malfunctions.

This manual will deal with subjects in a general nature. (i.e. all text will not pertain to all models).

IMPORTANT: It will be necessary for you to accurately identify the unit you are servicing, so you can be certain of a proper diagnosis and repair. (See Unit Identification.)

The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required in installation and repair, and who is equipped with the proper tools and test instruments.

Installation or repairs made by unqualified persons can result in hazards subjecting the unqualified person making such repairs to the risk of injury or electrical shock which can be serious or even fatal not only to them, but also to persons being served by the equipment.

If you install or perform service on equipment, you must assume responsibility for any bodily injury or property damage which may result to you or others. Friedrich Air Conditioning Company will not be responsible for any injury or property damage arising from improper installation, service, and/or service procedures.

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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
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