Carrier Troubleshooting Gas Furnaces: 58CTA and 58CTX Models
Page 54

58CT

NO

closed?switch door

closed?breaker circuit

YES

Is

Is

 

NO

NO

 

 

 

YES

switch?

YES

 

closed?

 

togoing

 

GUIDE

switchdoor Is

 

115Vthere Is

 

TROUBLESHOOTING

NO L2?and L1at 115V

YES

NO 2?-SEC and1- SECat 24V

YES

 

thereIs

 

thereIs

 

 

NO

 

 

 

START

on?light

YES

 

statusLED Is

 

circuitfrom wirein continuity

.furnace

forCheck

tobreaker

doorReplace .switch

furnaceReplace .control

.START

bacgo tok

breakcircuit ander

Close

Replace .transformer

If. -low polarityoltage properfor v check linecorrect twinned, forCheck areunits

.phasing transformer(24V) voltage

YES

 

rapidlyblinking

NO

lightstatus

pause?a

LEDIs

without

wireRED thefrom

To statusrecall brieflycode andremove onereconnect

do .recall controlLED codestatus theshorting RED initiating momentarily On.code before by statusstored panelaccess codestatus display blower vious toswitch or prethe safeguard power recall remove also draft not canYou

NO

 

slowlyON/OFF

flashes?long and

blinking

shortof

lightstatus LEDIs

combinationa with

willLED .out

1and short(1

goesLED

#11code

theuntil

statusor

terminalCom24V

faultprevious the

toterminal TEST/TWIN

ofcode statusthe flash

YES

theAfter repeatscontrol codethe

previousno .fault

wasthere

long ifflash)

indicated

entirethe

andspeed,

Once

forrun

HEAT

.sequence testcomponent thestart willcontrol thetimes, 4

willinducer The.speed HEATHI atON turnwill controlthe

HIspeed, HEATLO motorblower HSI,The .test component

ais codestatus The

mineddeter digitfirst

.code statusDetermine

thewith numberdigit 2

roomCheck orthermostat

speedCOOL runwill 10for 15– eachseconds Gas. andvalve willhumidifier

secondthe

shortfo andflashes

by numberthe

.cable interconnecting

NO

G control? orY/Y2 Y1,W2, furnacethe W/W1,at onterminals present thermostat 24VIs

 

 

NO

 

bewill inducer

 

Y1,W2, W/W1,to respondcontrol theDoes

signals?thermostat (24V)G andY/Y2,

theOFF turned

 

NO

 

ismotor . blowerthe seconds10 hen forspeed W.on - turned lowto be switched not

 

othercode statusprevious athere Was

#11?than

 

 

YES

 

flashes?

 

thatcode status

 

longof numberthe bydigit

 

theor fbelow sectionto Go

.flashed was

YES

thefrom wiresthermostat

 

theall .control Disconnect furnace

YES

heat, Status RED bealso .interrupted -high . On can operation . is heat, hours codes 24V) -low check 72 status or athrough to aftererased stored (115Vwhenever system cyclecooling are boards erased Run or codes LED

ausing whenrepeat lemprob wire? theDoes jumper

NO

thewith resistor,ballast toterminal .thermostat compatible a thermostat the notis installEither Com24V replaceor thermostat . thermostat, The controlfurnace theconnect the

YES

 

 

furnaceReplace .control

A02107A

Fig. 61 - Troubleshooting Guide - 2-Speed

54

Page 53 Page 55
Image 54
Page 53 Page 55
Contents Ama Safety Considerations Furnace Reliability HazardCUT Hazard Dimensions IntroductionClearances to Combustibles Electrostatic Discharge ESD Precautions Procedure Codes and StandardsLocation GeneralCarbon Monoxide Poisoning and Unit Damage Hazard Property Damage Hazard FIRE, Injury or Death HazardFire Hazard Location Relative to Cooling EquipmentCarbon Monoxide Poisoning Hazard AIR for Combustion VentilationFurnace Corrosion Hazard Outdoor Combustion Air MethodAir for Combustion, Ventilation, and Dilution for Outdoors Installation Upflow InstallationFIRE, EXPLOSION, and Carbon Monoxide Poisoning Hazard Downflow InstallationHorizontal Installation Suspended Furnace SupportPlatform Furnace Support Roll-Out ProtectionOpening dimensions In. mm Duct FlangesHorizontal Unit Suspension General Requirements Filter Arrangement Carbon Monoxide Poisoning HazardAIR Ducts Ductwork Acoustical Treatment Supply Air ConnectionsAir Delivery CFM With Filter FurnaceSpeed External Static Pressure IN. WC Size Inlet Return Air Connections Air Delivery CFM With Filter*Downflow Furnaces GAS Piping Fire or Explosion HazardUpflow Return Air Configurations and Restrictions Maximum Capacity of Pipe Furnace Damage HazardElectrical Shock and Fire Hazard WiringElectrical Connections Electrical Shock Hazard Furnace MAY not Operate HazardElectrical Data BOX RelocationElectrical Connection to J-BOX Electrical Box on Furnace Casing Side. See Fig Power Cord Installation in Furnace J-BOXBX. Cable Installation in Furnace J-BOX Fire or Electrical Shock HazardTwo-Stage Furnace with Two-Speed Air Conditioner See notes 2, 11, and 12 on the page following these figures Accessories VentingGeneral Venting Requirements Masonry Chimney RequirementsChimney Inspection Chart Appliance Application Requirements Internal Area of ChimneyVent Height Upflow Application-Vent Elbow Up Downflow Application-Vent Elbow Up then Left Horizontal Left Application Vent Elbow Left Furnace Vent Diameter Vent Height Orientation INPUTBTUH/HRUsing Tin Snips to Cut Tie Points START-UP, ADJUSTMENT, and Safety Check GeneralBurn Hazard Stage Furnace Setup Switch Description Start-Up ProceduresAdjustments Fire and Explosion HazardAltitude Derate Multiplier for U.S.A Redundant Automatic Gas Control ValveOrifice Hole Gas Rate cu ft. /hr Furnace Overheating HazardSeconds Size of Test Dial For Revolution Speed Selection Color Speed AS ShippedStage Furnace Blower OFF delay Setup Switch Check Safety ControlsChecklist Desired Heating Mode Setup Switch Blower OFF Delay SECA08485 Orifice Size and Manifold Pressures In wc for Gas Input Rate A08219 A08219A Service and Maintenance Procedures IntroductionCare and Maintenance Carbon Monoxide Poisoning and Fire HazardWiring Diagram Cleaning AND/OR Replacing AIR Filter Filter Size Information IN. / MMBlower Motor and Wheel Cleaning Heat Exchanger Unit Damage HazardSequence of Operation Igniter Position-Top View58CT Single-Stage Thermostat and Two-Speed Cooling Adaptive Mode Thermidistat ModeSingle-Speed Cooling Wiring Diagrams TroubleshootingContinuous Blower Mode Troubleshooting Guide 2-Speed KitAdapter Chimneyin Usedswitch Shutoffvent Blocked Catalog No58CT---10SI
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