Hearth and Home Technologies ST-550TM-IPI owner manual Troubleshooting, Intellifire Ignition System

Page 53

15 Troubleshooting

With proper installation, operation, and maintenance your gas appliance will provide years of trouble-free service. If you do experience a problem, this troubleshooting guide will assist a qualified technician in the diagnosis of a problem and the corrective action to be taken. This troubleshooting guide can only be used by a qualified technician. Contact your dealer to arrange a service call by a qualified technician.

A. Intellifire Ignition System

Symptom

Possible Cause

Corrective Action

 

 

 

1. Pilot won’t light.

a. Incorrect wiring.

Verify “S” wire (white) for sensor and “I” wire (orange) for ignitor

The ignitor/module

 

are connected to correct terminals on module and pilot assembly.

makes noise, but no

 

 

b. Loose connections or electrical

Verify no loose connections or electrical shorts in wiring from

spark.

 

shorts in the wiring.

module to pilot assembly. Verify connections underneath pilot as-

 

 

sembly are tight; also verify connections are not grounding out to

 

 

metal chassis, pilot burner, pilot enclosure, mesh screen if present,

 

 

or any other metal object.

 

 

 

 

c. Ignitor gap is too large.

Verify gap of igniter to right side of pilot hood. The gap should be

 

 

approximately .17 in. or 1/8 in. (3 mm).

 

 

 

 

d. Module.

Turn ON/OFF rocker switch or wall switch to OFF position. Remove

 

 

ignitor wire “I” from module. Place a grounded wire about 3/16 in. (5

 

 

mm) away from “I” terminal on module. Place ON/OFF rocker switch

 

 

or wall switch in ON position. If there is no spark at “I” terminal

 

 

module must be replaced. If there is a spark at “I” terminal, module

 

 

is fine. Inspect pilot assembly for shorted sparker wire or cracked

 

 

insulator around electrode. Replace pilot if necessary.

 

 

 

2. Pilot won’t light,

a. No power or transformer installed

Verify that transformer is installed and plugged into module. Check

there is no noise or

incorrectly.

voltage of transformer under load at spade connection on module

spark.

 

with ON/OFF switch in ON position. Acceptable readings of a good

 

 

transformer are between 3.2 and 2.8 volts AC.

 

 

 

 

b. A shorted or loose connection in wir-

Remove and reinstall the wiring harness that plugs into module.

 

ing configuration or wiring harness.

Verify there is a tight fit. Verify pilot assembly wiring to module. Re-

 

 

move and verify continuity of each wire in wiring harness. Replace

 

 

any damaged components.

 

 

 

 

c. Improper wall switch wiring.

Verify that 110/VAC power is “ON” to junction box.

 

 

 

 

d. Module not grounded.

Verify black ground wire from module wire harness is grounded to

 

 

metal chassis of appliance.

 

 

 

 

e. Module.

Turn ON/OFF rocker switch or wall switch to OFF position. Re-

 

 

move ignitor wire “I” from module. Place ON/OFF rocker switch

 

 

or wall switch in ON position. If there is no spark at “I” terminal

 

 

module must be replaced. If there is a spark at “I” terminal, module

 

 

is fine. Inspect pilot assembly for shorted sparker wire or cracked

 

 

insulator around electrode.

 

 

 

3. Pilot sparks, but

a. Gas supply.

Verify that incoming gas line ball valve is “open”. Verify that inlet

Pilot will not light.

 

pressure reading is within acceptable limits, inlet pressure must

 

 

not exceed 14 in. W.C.

 

 

 

 

b. Ignitor gap is incorrect.

Verify that spark gap from ignitor to pilot hood is .17 in. or 1/8 in (3 mm).

 

 

 

 

c. Module is not grounded.

Verify module is securely grounded to metal chassis of appliance.

 

 

 

 

d. Module voltage output / Valve/Pilot

Verify battery voltage is at least 2.7 volts. Replace batteries if volt-

 

solenoid ohms readings.

age is below 2.7.

 

 

 

Heat & Glo • ST-550TM-IPI • 2142-900 Rev. B • 11/08

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Contents What to do if you smell gas ModelsHomeowner Reference Information CongratulationsUser Guide Table of ContentsTroubleshooting Appliance SetupFinishing Reference MaterialsCONDITIONS, Exclusions & Limitation of Liability Limited Lifetime Warranty Listing and Code Approvals Requirements for the Commonwealth of Massachusetts Installation of Carbon Monoxide DetectorsYour Fireplace Gas Fireplace SafetyOperating Instructions User Guide Remote Controls, Wall Controls and Wall Switches Fixed Glass AssemblyClear Space Decorative Doors and FrontsFinal inspection by Lighting Instructions IPIAfter Fireplace is Lit Frequently Asked QuestionsMaintenance Tasks-Homeowner Maintenance and ServiceGlass Cleaning Remote ControlMaintenance Tasks-Qualified Service Technician Porcelain Firebox Panel CleaningGasket Seal and Glass Assembly Inspection VentingIPI Pilot Flame Patterns Burner Ignition and OperationTypical Appliance System Getting StartedInspect Appliance and Components Design and Installation ConsiderationsTools and Supplies Needed Selecting Appliance Location Framing and ClearancesClearances Constructing the Appliance ChaseFireplace Opening Non-Combustible MantelVent Termination Minimum Clearances Termination LocationsCovered Alcove Applications Continue Adding Vent Components Install Support BracketsTo Install the Heat Shield Approved Pipe Vent Information and DiagramsVent Table Key Use of ElbowsUse of Flex Vent V1 Minimum H1 Maximum Vent DiagramsTop Vent Horizontal Termination One Elbow V1 Minimum H1 + H2 Maximum Top Vent Horizontal Termination Two ElbowsV1 Minimum H1 + H2 Maximum V1 + V2 Min Top Vent Horizontal Termination Three ElbowsExhaust restrictor Instructions V1 Minimum Maximum V1 + V2 Min Two Elbows Three ElbowsMinimum Maximum + V 2 Min Pipe Clearances to Combustibles Vent Clearances and FramingWall Penetration Framing Combustible Wall PenetrationPipe SLP Install the Ceiling FirestopVaulted Ceiling Installation Install Attic Insulation ShieldFlat Ceiling Installation Securing and Leveling the Appliance Appliance PreparationAssemble Vent Sections Installing Vent PipeSecure the Vent Sections Assemble Slip SectionsDisassemble Vent Sections Install Decorative Ceiling ComponentsAssemble and Install Storm Collar Install Metal Roof FlashingApply Sealant TOP & Partial Sides Install RF4-8Heat Shield Requirements for Horizontal Termination Install Vertical Termination CapInstall Decorative Wall Components 22 Venting through the wall Install Horizontal Termination CapFuel Conversion Gas InformationGas Pressure Gas ConnectionIntellifire Ignition System Wiring Wiring RequirementsOptional Accessories Requirements Electrical Service and RepairIntellifire Ignition Wiring Diagram with Remote Receiver Wall Switch Installation for Fan Option Junction Box InstallationSplatter Guard To install the Splatter GuardFinishing To Remove the Splatter Guard To Close the Lower Access Panel15 Non-Combustible Zone Mantel and Wall Projections Combustible MantelFinishing Material Facing MaterialWithout Front Shown Appliance Setup Air Shutter Setting Install Trim Kits and SurroundsIntellifire Ignition System TroubleshootingSymptom Possible Cause Corrective Action Remove any contaminants that may have accumulated on Reference Materials Appliance Dimension DiagramVent Components Diagrams Adapter Snorkel Black Support Box-BlackWall Thimble-Black SLP-HRC-SS SLP-HRC-ZC-SS Horizontal Termination CAP ST-550TM-IPI Service PartsAt Depot Service Parts ListStocked Intermittent Pilot Ignition Valve Assembly Contact Information
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