Carrier 58MVP 170 Series Troubleshooting Manual

Carrier 58MVP 170 Series Troubleshooting Manual Manual pdf 1 page image

Variable Speed, Two-StageElectronic CondensingFour-Way Multipoise Gas FurnaceTroubleshooting Guide(This document is to be used for Series 170 58MVP furnaces. Use58MVP-8SM for all previous Series.)NOTE: Read the entire instruction manual before starting theinstallation.TABLE OF CONTENTSSafety Considerations.....................................................................1Instructions .....................................................................................1General............................................................................................3Sequence of Operation...................................................................3Single-Stage Thermostat and Two-Stage Heating(Adaptive Mode).......................................................................3Two-Stage Thermostat and Two-Stage Heating......................4Cooling Mode ...........................................................................5Thermidistat Mode....................................................................6Super-Dehumidify Mode ..........................................................6Continuous Blower Mode.........................................................6Heat Pump Defrost ...................................................................7Component Test ........................................................................7Service/Status Code Instructions ...................................................8Component Test .............................................................................9Start Here......................................................................................10Rapid Flashing Amber LED ........................................................11Improper Cooling Airflow ...........................................................12High-Heat Temperature Rise Too Low.......................................13Status Code 11—No Previous Code ...........................................14Status Code 12—Blower On After Power Up............................14Status Code 13—Limit Circuit Lockout .....................................15Status Code 14—Ignition Lockout ..............................................16Status Code 15—Blower Motor Lockout....................................16Status Code 21—Gas Heating Lockout ......................................16Status Code 22—Abnormal Flame-Proving Signal ....................17Status Code 23—Pressure Switch Did Not Open.......................17Status Code 24—Secondary Voltage Fuse Is Open ...................18Status Code 25—Model Selection or Setup Error......................20Status Code 31—High-Heat Pressure Switch or Relay DidNot Close or Reopened................................................................21Status Code 32—Low-Heat Pressure Switch Did Not Closeor Reopened..................................................................................23Status Code 33—Limit Circuit Fault ..........................................24Status Code 34—Ignition Proving Fault .....................................27Status Code 41—Blower Motor Fault.........................................29Status Code 42—Inducer Motor Fault ........................................31Status Code 43—Low-Heat Pressure Switch Open WhileHigh-Heat Pressure Switch is Closed..........................................33Status Code 45—Control Circuitry Lockout...............................34Cleanup and Start-Up Instructions ..............................................34Appendix ABoard Layout and Wiring Schematics ........................................35Appendix BECM Blower Motor Description and Operation.........................37Appendix CPressure Check Diagram..............................................................38Appendix DStatic Pressure Reading Location Diagrams ...............................38Appendix EQuick Reference Information ......................................................40Flame Sensor Microamperage...........................................40Hot Surface Igniter Reading .............................................40Gas Valve Ohm Readings.................................................40Power choke (Inductor).....................................................40Appendix FFurnace Staging Algorithm..........................................................40SAFETY CONSIDERATIONSInstalling and servicing heating equipment can be hazardous due togas and electrical components. Only trained and qualified person-nel should install, repair, or service heating equipment.Untrained personnel can perform basic maintenance functionssuch as cleaning and replacing air filters. All other operations mustbe performed by trained service personnel. When working onheating equipment, observe precautions in the literature, on tags,and on labels attached to or shipped with the unit and other safetyprecautions that may apply.Follow all safety codes. In the United States, follow all safetycodes including the National Fuel Gas Code (NFGC) NFPA 542002/ANSI Z223.1-2002 and the Installation Standards, Warm AirHeating and Air Conditioning Systems (NFPA 90B) ANSI/NFPA90B. In Canada, refer to the CAN/CGA-B/49.1- and .2-M00National Standard of Canada, Natural Gas and Propane InstallationCodes (NSCNGPIC). Wear safety glasses and work gloves. Havea fire extinguisher available during start-up and adjustment proce-dures and service calls.Recognize safety information. This is the safety-alert symbol.When you see this symbol on the unit and in instructions ormanuals, be alert to the potential for personal injury.Understand the signal words DANGER, WARNING, CAUTION,and NOTE. These words are used with the safety-alert symbol.DANGER identifies the most serious hazards, which will result insevere personal injury or death. WARNING signifies hazardswhich could result in personal injury or death. CAUTION is usedto identify unsafe practices, which would result in minor personalinjury or product and property damage. NOTE is used to highlightsuggestions, which will result in enhanced installation, reliability,or operation.INSTRUCTIONSThis guide uses your expertise and observations to lead you to thetrouble spot as efficiently as possible. This is only intended as aguide and should not be used blindly. Your experience andexpertise are of high value when troubleshooting this unit. Do notdisregard all of your instincts.Visit www.carrier.comManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 1 4Tab 6a 8a PC 101 Catalog No. 535–80083 Printed in U.S.A. Form 58MVP-10SM Pg 1 6-03 Replaces: New