Carrier 58PHA/PHX instruction manual Catalog No 58PHA---03SI

Page 54

58PHA

45 CONTROLCIRCUITRYLOCKOUT Auto-resetafter1hourlockoutdueto: - Flamecircuitfailure. - Gasvalverelaystuckopen. - Softwarecheckerror. Resetpowertoclearlockout.Replace controlifcoderepeats.

Replacefurnacecontrol.

Checkforcontinuityintheharnessandigniter. Replacedefectivecomponent.

 

NO

YES

 

Unplugigniterharnessfromcontrolandinitiate anothercomponenttestsequence.Check

for115Vbetweenpin1andNEUTRAL-L2on thecontrol.Was115Vpresentforthe15 secondperiod?

Checkconnections.IfOK,replacecontrol.

Checkthatallgasvalvesareturnedon. Replacevalve.

 

NO

 

 

ReconnecttheRthermostatleadandset thermostattocallforheat.Connectvoltmeter

acrossgasvalveconnections.Doesgasvalve receive24V?

YES

Checkfor:

- Inadequateflamecarryoverorrough ignition. - Lowinletgaspressure. - Properfiringrate. - Blockedorincorrectcarry-overgap. (.045”nominal)

Allowblowertocomeonandrepeattestto checkforintermittentoperation.

 

Checkconnectionsandretry.Ifcurrentis

neartypicalvalue(4.0-6.0nominal)and

burnerswillnotstayon,replacecontrol.

 

 

Replaceelectrode.

 

Replacefurnacecontrol.

 

 

NO

 

NO

 

YES

 

NO

 

 

 

NO

 

NO

 

 

Doesgasvalveopenandallowgastoflow?

YES

Dothemainburnersignite?

YES

Dothemainburnersstayon?

NO

Repeatcallforheatandcheckflamesensor

currentduringtrialforignitionperiod.Isthe

DCmicroampsbelow0.5?

YES

Cleanflamesensorwithfinesteelwooland recheckcurrent.Nominalcurrentis4.0to6.0 microamps.

Iscurrentneartypicalvalue?

YES

Willmainburnersigniteandstayon?

YES

Fixed.

NO

YES

Adapter Kit

31 PRESSURE SWITCH DID NOT CLOSE OR REOPENED – If open longer than 5 minutes, inducer shuts off for 15 minutes before retry. If opens during blower on- delay period, blower will come on for the selected blower off-delay. Check for: - Proper vent sizing.

11 NO PREVIOUS CODE – Stored codes are erased after 72 hours. On RED LED boards stored status codes can also be erased whenever power (115V or 24V) is interrupted. Run system through a heating or cooling cycle to check system.

Lowinducervoltage(115V). Lowinletgaspressure(ifLGPSused). Inadequatecombustionairsupply. Disconnectedorobstructedpressure tubing.

Defectiveinducermotor. Defectivepressureswitch. Excessivewind. Restrictedvent.

- - - -

- - - -

12 BLOWER ON AFTER POWER UP – (115V OR 24V) – Normal operation. Blower runs for 90 seconds, if unit is powered up during a call for heat (R-W closed) or when (R-W opens) during the blower on-delay period.

33 LIMIT CIRCUIT FAULT – Indicates the limit, draft safeguard, flame rollout, or blocked vent shutoff switch* (if used) is open. Blower will run for 4 minutes or until open switch remakes whichever is

13 LIMIT CIRCUIT LOCKOUT – Lockout occurs if the limit, draft safeguard, flame rollout, or blocked vent switch*(if used) is open longer than 3 minutes. Control will auto-reset after 3 hours. See code 33.

longer. If open longer than 3 minutes, code changes to lockout #13. If open less than 3 min. status code #33 continues to flash until blower shuts off. Flame rollout switch and BVSS requires manual reset. Check for:

14 IGNITION LOCKOUT – System failed to ignite gas and prove flame in 4 attempts. Control will auto-reset after 3 hours. See status code 34.

- Dirtyfilterorrestrictedductsystem. - Looseblowerwheel. - Defectiveswitchorconnections. - Defectiveblowermotororcapacitor. - Inadequatecombustionairsupply (flamerolloutswitchopen). - Restrictedvent. - Properventsizing. - Excessivewind.

IGNITIONPROVINGFAILURE–Ifflame isnotsensedduringthetrialforignition period,thecontrolwillrepeattheignition sequence3moretimesbeforelockout #14occurs.Ifflamesignalislostduring thebloweron-delayperiod,blowerwill comeonfortheselectedbloweroff-delay. Checkthefollowingitemsfirstbefore proceedingtothenextstep.

 

34

GASHEATINGLOCKOUT–Turnoff powerandwait5minutestoretry. Checkfor: - Stuckclosedgasvalverelayoncontrol. - Miswireorshorttogasvalvewire.

ABNORMALFLAME-PROVINGSIGNAL Flameisprovedwhilegasvalveisde- energized.Inducerwillrununtilfaultis cleared.Checkfor: - Stuckopenorleakygasvalve.

PRESSURESWITCHDIDNOTOPEN Checkfor: - Obstructedpressuretube. - Pressureswitchstuckclosed.

21

22

23

- Gas valve turned off. - Manual shut-off valve. - Green/Yellow wire MUST be connected to furnace sheet metal. - Flame sensor must not be grounded. To determine whether the problem is in the gas valve, igniter, or flame sensor the system can be operated in the component test mode to check the igniter. First remove the R thermostat connection from the control and initiate the component test sequence. Does the igniter glow orange/white by the end of the 15 second warm-up period?

24 SECONDARY VOLTAGE FUSE IS OPEN Check for: - Short circuit in secondary voltage (24V) wiring including thermostat leads. Disconnect thermostat leads to isolate short circuit.

* Blocked vent shutoff switch used in Chimney

A05032

Copyright 2008 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231

Printed in U.S.A.

Edition Date: 11/08

Catalog No: 58PHA---03SI

 

 

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Replaces: 58PHA--02SI

54

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Contents Ama Safety Considerations Furnace Reliability HazardIntroduction CUT HazardCodes and Standards Clearances to CombustiblesElectrostatic Discharge ESD Precautions Procedure VentingLocation GeneralCarbon Monoxide Poisoning Hazard Electrical Operation Hazard Personal Injury AND/OR Property Damage HazardFurnace Corrosion Hazard AIR for Combustion VentilationFire Hazard Location Relative to Cooling EquipmentACH Bottom Return Air Inlet InstallationCombination of Indoor and Outdoor Air Side Return Air InletDownflow Installation Leveling LegsA08556 Platform Furnace Support Opening Dimensions In. mmSuspended Furnace Support Roll-Out ProtectionGeneral Requirements Filter Arrangement Carbon Monoxide and Poisoning HazardAIR Ducts Ductwork Acoustical Treatment Supply Air ConnectionsUpflowdownflow Horizontal Horizontal Suspension with Straps Return Air Connections GAS Piping Fire or Explosion HazardFurnace Overheat Hazard Air Delivery CFM With Filter Maximum Capacity of PipeUpflow Return Air Configurations and Restrictions Horizontal Return Air Configurations and Restrictions Electrical Data Electrical Connections Electrical Shock HazardElectrical Shock and Fire Hazard BOX Relocation WiringFurnace MAY not Operate Electrical Connection to J-BOXAccessories Power Cord Installation in Furnace J-BOXBX Cable Installation in Furnace J-BOX VentingFurnace Control General Venting Requirements Masonry Chimney RequirementsSingle-Stage Furnace with Single-Speed Air Con Ditioner Humidfier Appliance Application Requirements Internal Area of ChimneyChimney Inspection Chart Additional Venting Requirements Burn HazardSidewall Venting Upflow Application-Vent Elbow Up See Notes 1,2,4,5,7,8,9 on See Notes 1,2,4,5,7,8,9 Using Tin Snips to Cut Tie Points Venting Notes for FiguresRounded End of Knockout START-UP, ADJUSTMENT, and Safety Check Fire and Explosion HazardFurnace Damage Hazard Canada Follow exclusively the National Fuel Gas CodeAltitude Derate Multiplier for U.S.A Gas Control Valve Check Safety Controls Speed SelectionFurnace Overheating Hazard Checklist Gas Rate Cu Ft./HrA08220 A08220A FIRE, INJURY, or Death Hazard Service and Maintenance ProceduresElectrical Controls and Wiring Electrical Shock Hazard Electrical SHOCK, Fire or Explosion HazardA08221 Service Carbon Monoxide Poisoning Fire Hazard Care and Maintenance Fire or Explosion HazardCleaning AND/OR Replacing AIR Filter Filter Size Information In. / mmCleaning Heat Exchanger Unit Damage HazardIgniter Position-Side View Cleaning Heat Exchanger Cell Sequence of OperationContinuous Blower Mode Cooling ModeThermidistat Mode Two-Speed CoolingWiring Diagrams TroubleshootingHeat pump Wiring Diagram Troubleshooting Guide Catalog No 58PHA---03SI
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