Friedrich RAC-SVC-06 service manual RAC-Svc-06

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Friedrich Air Conditioning Co.

Post Office Box 1540 • San Antonio, Texas 78295-1540

4200 N. Pan Am Expressway • San Antonio, Texas 78218-5212

(210)357-4400 • FAX (210) 357-4480 www.friedrich.com

Printed in the U.S.A.

RAC-Svc-06 (3-06)

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Contents 2006 Table of Contents IntroductionRoom AIR Conditioners Limited Warranty Routine Maintenance 08 L 1 Unit IdentificationPerformance Data ChassisElectrical 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 RepairsHermetic Component Replacement Specialprocedureinthecaseofcompressor Motor BurnoutRotarycompressorspecialtroubleshooting and Service 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 Problem Possible Cause Action Problem Possible Cause Action Heat / Cool Room AIR Conditioners Troubleshooting Tips Troubleshooting Chart Cooling Refrigerant System Diagnosis HeatingTroubleshooting Chart Heating Electrical Troubleshooting Chart Heat PumpSystem Cools When Heating is Desired YESModel Models RM18L30-A, KM18L30-A, KM21L30-A, RM24L30-A, KM24L30-A SS16L30-A/B, SM18L30-A/B, SM21L30-A/B, SM24L30-A/B SL36L30-A 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-06