Hearth and Home Technologies CD4842LR, CD4842ILR Troubleshooting, Standing Pilot Ignition System

Page 57

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. Standing Pilot Ignition System

Symptom

Possible Causes

Corrective Action

1. After repeated triggering

A. No gas or low gas pressure.

Check the remote shut-off valves from the appliance. Usually, there

of the red or black piezo

 

is a valve near the gas main. There can be more than one valve

ignitor button, the spark

 

between the appliance and the main.

ignitor will not light the

B. No lp in tank.

Check the LP (propane) tank. You may be out of fuel.

pilot. Check for spark.

C. Ignitor.

Check the spark at the electrode and pilot. If no spark and electrode

 

 

 

wire is properly connected, replace the ignitor. Verify that there is

 

 

no short in electrode wire.

 

D. Pilot or misaligned electrode

Using match, light the pilot. If the pilot lights, turn off the pilot and

 

(spark at electrode).

trigger the piezo ignitor button again. If the pilot lights, an improper

 

 

gas/air mixture caused the bad lighting and a longer purge period

 

 

is recommended. If the pilot will not light, ensure the gap at the

 

 

electrode and pilot is one-eighth inch to have a strong spark. If the

 

 

gap is OK, replace the pilot.

 

 

 

2. The pilot will not stay lit

A. Thermocouple.

Check that the pilot flame impinges on the thermocouple. Adjust the

after carefully following the

 

pilot for proper flame impingement.

lighting instructions.

 

 

 

Ensure that the thermocouple connection at the gas valve is fully

 

 

 

 

inserted and tight (hand tighten plus 1/4 turn).

 

 

Verify proper voltage output from the thermocouple to the valve.

 

 

Place one millivolt meter lead wire on the thermocouple copper

 

 

lead. Place the second lead wire on the solder button on the back

 

 

of the valve (blue wire). Start the pilot and hold the valve knob in.

 

 

The millivolt reading should read 8-16 millivolts. If millivolt reading

 

 

is less than 8 millivolts, replace thermocouple.

 

 

 

 

B. Improper gas inlet pressure.

Natural gas should be 5-14 in. w.c. LP should be 10-14 in. w.c.

 

 

Verify pressure with manometer.

 

C. Control valve.

If the thermocouple is producing 8-16 millivolts, replace control

 

 

valve.

3. The pilot is burning, there

A. On/off switch or wires

Check the ON/OFF switch and wires for proper connections. Place

is no burner flame, the

defective.

the jumper wires across the terminals at the ON/OFF switch. If the

valve knob is in the ON

 

burner comes on, replace the ON/OFF switch. If the switch is OK,

position, and the ON/OFF

 

place the jumper wires across the ON/OFF switch wires at the gas

switch is in the ON

 

valve. If the burner comes on, the wires are faulty or connections

position.

 

are bad.

 

 

 

 

B. Thermopile may not be

Check that the pilot flame impinges thermopile properly.

 

generating sufficient

Be sure the wire connections from the thermopile at the gas valve

 

millivoltage.

 

terminals are tight and that the thermopile is fully inserted into the

 

 

 

 

pilot bracket.

 

 

Check the thermopile with a millivolt meter. Take the reading at

 

 

TH-TP&TP terminals of the gas valve. The meter should read 350

 

 

millivolts minimum, while holding the valve knob depressed in the

 

 

pilot position, with the pilot lit, and the ON/OFF switch in the OFF

 

 

position. Replace the thermopile if the reading is below the specified

 

 

minimum.

 

 

 

 

 

With the pilot in the ON position, disconnect the thermopile leads

 

 

from the valve. Take a reading at the thermopile leads. The reading

 

 

should be 350 millivolts minimum. Replace the thermopile if the

 

 

reading is below the minimum.

 

 

 

Heatilator • Caliber CD Series • 4040-263 Rev N • 11/08

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Contents Models CD4236R CD4842R CD4236LR CD4842LR CD4236IR CD4842IR Installation and OperationDirect Vent Gas Appliance What to do if you smell gasHomeowner Reference Information CongratulationsTable of Contents Installer GuideUser Guide Troubleshooting Appliance SetupFinishing Reference MaterialsCONDITIONS, 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 Remote Controls, Wall Controls and Wall Switches Fixed Glass AssemblyFan Kit optional Clear SpaceLighting Instructions IPI For Your Safety Read Before LightingLighting StandingPilot After Fireplace is Lit Frequently Asked QuestionsMaintenance Tasks-Homeowner Maintenance and ServiceRemote Control Doors, Surrounds, FrontsMaintenance Tasks-Qualified Service Technician Typical Appliance System Getting StartedTools and Supplies Needed Design and Installation ConsiderationsInspect Appliance and Components Any such action may cause a fire hazardFraming and Clearances Select Appliance LocationModel # Construct 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 Approved Pipe Vent Information and DiagramsVent Table Key Use of ElbowsVent 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 Install Vertical Termination BafflePipe Clearances to Combustibles Vent Clearances and FramingWall Penetration Framing Combustible Wall PenetrationInstalling 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 Secure and Level the ApplianceAttach Pipe to the Firebox Assembly Install Vent PipeAssemble Pipe Sections DVP Only Assemble Pipe SectionsAssemble Slip Sections Assemble Vent Sections SLP OnlyDisassemble Vent Sections Secure the Vent SectionsInstall Decorative Ceiling Components SLP only Install Metal Roof Flashing Assemble and Install Storm CollarCaulk SLP-FS Install RF4-8Install Vertical Termination Cap Install Decorative Wall Components SLP onlyHeat Shield Requirements for Horizontal Termination Interior Install Horizontal Termination CapFuel Conversion Gas InformationGas Pressure Gas ConnectionStanding Pilot Ignition System Wiring Wiring RequirementsIntellifire Ignition System Wiring Optional Accessories RequirementsWSK-MLT-HTL Electrical Service and RepairWall Switch Installation for Fan Optional Junction Box InstallationFinishing Facing MaterialCombustible Appliance Setup Install Hood Install Trim and/or SurroundAir Shutter Setting Removing Fixed Glass AssemblyTroubleshooting Symptom Possible Causes Corrective ActionStanding Pilot Ignition System Symptom Possible Cause Corrective Action Intellifire 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-2DVPCD4236IR, CD4236ILR Service PartsCD4236R, CD4236LR ServiceIPI Valve Assembly CD4842IR, CD4842ILR CD4842R, CD4842LR IPI Valve Assembly Optional Components FFCM36BN Model # DescriptionThis page intentionally left blank This page intentionally left blank This page intentionally left blank Contact Information