Friedrich 2007 service manual Table of Contents

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TABLE OF CONTENTS

 

Introduction / Typical Unit Components

3

Warranty

4

Routine Maintenance

5

Unit Identification / Nomenclature

6

Performance Data

7

Electrical Data

8

Functional Component Definitions

9

Electronic Controls

9-10

Refrigeration Sequence of Operation

11

Sealed Refrigeration Repairs

11-12

Refrigerant Charging

13-15

Troubleshooting

16-23

Wiring Diagrams

24-35

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 2007 Table of Contents Introduction Typical Unit ComponentsRoom AIR Conditioners Limited Warranty Routine Maintenance 08 L 1 Unit IdentificationPerformancedata Electrical Data ReceptacleFunctional Component Definitions Electronic ControlsTesting the Electronic Control XQ/WS Boards & QME Boards Testing the Electronic Control Error Code ListingsRefrigeration System Sequence of Operation Sealed Refrigeration System RepairsRotarycompressorspecialtroubleshooting and Service Hermetic Component ReplacementSpecialprocedureinthecaseofcompressor Motor Burnout Equipment RequiredRefrigerant Charging Method of ChargingUndercharged Refrigerant Systems Overcharged Refrigerant SystemsRestricted Refrigerant System Normal Function of Valve Malfunction of ValveCooling only Room AIR Conditioners Troubleshooting Tips Problem Possible Cause ActionReplace fuse, reset breaker. If repeats, check To equalize before attempting to restart. Instruct Vents on applicable models are in the closed Heat / Cool Room AIR Conditioners Troubleshooting Tips Troubleshooting Chart Cooling Refrigerant System Diagnosis HeatingSystem Cools When Heating is Desired Troubleshooting Chart HeatingElectrical Troubleshooting Chart Heat Pump YESModels RM18L30-A, KM18L30-A, KM21L30-A, RM24L30-A, KM24L30-A SS16L30-A/B, SM18L30-A/B, SM21L30-A/B, SM24L30-A/B Model SL28L30-A SL36L30-B EQ08L11-A ES12L33-A, ES16L33-A, EM18L34-A, EM24L35-A EL36L35-A YS09L10-A, YS09L10-B YS13L33-A, YM18L34-A YL24L35-A RAC-Svc-07