Hearth and Home Technologies CNXT4236IH, CNXT4842ILT Troubleshooting, Intellifire Ignition System

Page 63

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 service technician in the diagnosis of a problem and the corrective action to be taken. This troubleshooting guide can only be used by a qualified service technician. Con- tact your dealer to arrange a service call by a qualified service technician.

A. Intellifire Ignition System

Symptom

Possible Cause

Corrective Action

1. Pilot won’t light. The

A. Incorrect wiring.

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

ignitor/module makes

 

connected to correct terminals on module and pilot assembly.

noise, but no spark.

 

 

 

B. Loose connections or electrical

Verify no loose connections or electrical shorts in wiring from

 

shorts in the wiring.

module to pilot assembly. Verify connections underneath pilot

 

 

assembly 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 inch 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, there is no

A. No power or transformer

Verify that transformer is installed and plugged into module. Check

noise or spark.

installed incorrectly.

voltage of transformer under load at spade connection on module

 

 

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

Remove and reinstall the wiring harness that plugs into module.

 

in wiring configuration or wiring

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

 

harness.

Remove 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. Remove

 

 

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 Pilot will

A. Gas supply.

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

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/

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

 

Pilot solenoid ohms readings.

voltage is below 2.7.

 

 

 

Heatilator • Caliber CNXT Series • 4047-132 Rev U • 11/08

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Contents What to do if you smell gas Installation and OperationModels Direct Vent Gas ApplianceHomeowner Reference Information CongratulationsTable of Contents Installer GuideUser Guide Reference Materials Appliance SetupTroubleshooting FinishingCONDITIONS, Exclusions & Limitation of Liability Warranty Hearth & Home Technologies Limited WarrantyWarranty Listing and Code Approvals Requirements for the Commonwealth of Massachusetts Gas Fireplace Safety Operating InstructionsYour Fireplace Clear Space Fixed Glass AssemblyRemote Controls, Wall Controls and Wall Switches Fan Kit optionalLighting Instructions IPI After Fireplace is Lit Frequently Asked QuestionsMaintenance Tasks-Homeowner Maintenance and ServiceMaintenance Tasks-Qualified Service Technician Typical Appliance System Getting StartedAny such action may cause a fire hazard Design and Installation ConsiderationsTools and Supplies Needed Inspect Appliance and ComponentsFraming and Clearances Selecting Appliance LocationModel # Constructing the Appliance Chase ClearancesRough Opening Model Width Height Depth Mantel and Wall Projections MantelsMantel Legs or Wall Projections Vent Termination Minimum Clearances Termination LocationsMinimum Clearances for Termination Use of Elbows Vent Information and DiagramsApproved Pipe Vent Table KeyVent Diagrams Top Vent Horizontal TerminationOne Elbow Two 45 Elbows replacing One 90 Elbow Two ElbowsMin Max +H 2 max +H 2+H 3 max Three Elbows Installed VerticallyNo Elbow Top Vent Vertical Termination12 ft 3.66 m min 60 ft 18.29 m max One 45 Elbow Rear Vent Horizontal TerminationTwo Elbows Rear Vent Vertical Termination Min Ft 1.83 m max 12 ft 3.66 m min 60 ft 18.29 m max 17 Flat Baffle Installing Vertical Termination BaffleReplace the glass refer to .H Start the appliance Combustible Wall Penetration Vent Clearances and FramingPipe Clearances to Combustibles Wall Penetration FramingInstalling Ceiling Firestop Install the Ceiling FirestopInstall Attic Insulation Shield Flat Ceiling InstallationVaulted Ceiling Installation Convert from Top Vent to Rear Vent Appliance PreparationOuter Collar, Remove Four Screws 11 Place Outer Collar on Rear of Appliance 16 Cover Plate-Replace 20 Proper Positioning, Leveling And Securing Of An Securing and Leveling the ApplianceAssemble Pipe Sections DVP Only Installing Vent PipeAttach Pipe to the Firebox Assembly Assemble Pipe Sections DVP OnlyAdding Venting Components Assemble Vent Sections SLP OnlySecure the Vent Sections Assemble Slip SectionsDisassemble Vent Sections Install Decorative Ceiling Components SLP onlyCaulk Install Metal Roof Flashing17 Assembling the Storm Collar Assemble and Install Storm CollarSLP-FS Install RF4-8Installing Vertical Termination Cap Installing Decorative Wall Components SLP onlyHeat Shield Requirements for Horizontal Termination Interior Install Horizontal Termination CapGas Connection Gas InformationFuel Conversion Gas PressureElectrical Information Wiring RequirementsIntellifire Ignition System Wiring Electrical Service and Repair Junction Box InstallationWSK-MLT Multifunction Wall Switch PrecautionsDetermine Location Intellifire IPI Wiring Diagram Wiring the Wall SwitchHook up the Temperature Sensor Switch for Fan Install the Flame SolenoidInstall the Cover Plate Install the Remote Cover PlateSetting Flame Height/Manifold Pressure Wall Switch Button OperationWSK-MLT Operating Instructions Service Parts List Facing Material FinishingAppliance Setup Place the Rockwool Log AssemblyRemoving Fixed Glass Assembly Install Trim and/or SurroundsInstall Hood Air Shutter SettingTroubleshooting Symptom Possible Cause Corrective ActionIntellifire Ignition System Will not ignite. If the pilot Reference Materials Appliance Dimension DiagramDVP Vent Components Vent Components DiagramsBEK DVP-BEK2 DVP-TVHW Horizontal Termination Cap DVP-TRAPDVP-HRC-SS Effective Adapter SL-2DVPParts ServiceStocked Service PartsIPI Valve Assembly CNXT4842 Series Log/Grate Assembly Valve Assembly Model Description Optional ComponentsContact Information
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