Desa CB36N, CB36P Pilot is lit or cycles during, Have the vent system, Clogged, Bustion Damaged

Page 27

Troubleshooting

Continued

OBSERVED PROBLEM POSSIBLE CAUSE

REMEDY

Manual Ignition System Only Pilot lights but flame goes out when control knob is released

1.Gas control knob not fully pressed in

2.Gas control knob not pressed in long enough

3.Equipment shutoff valve not fully open

4.Pilot flame not touching thermocouple, which al- lows thermocouple to cool, causing pilot to go out. This problem could be caused by one or more of the fol- lowing:

A)Low gas pressure

B)Dirty or partially clogged pilot

5.Thermocouple connection loose at control valve.

6.Thermocouple damaged

7.Control valve damaged

1.Press in gas control knob fully

2.After pilot lights, keep gas control knob pressed in 30 seconds

3.Fully open equipment shut- off valve

4.A) Contact local natural or propane/LP gas company B) Clean pilot (see Cleaning and Maintenance, page 24) or replace pilot assembly

5.Hand tighten until snug, then tighten 1/4 turn more

6.Replace pilot assembly

7.Replace control valve

Burner does not light after

1. Burner orifice clogged

1.

Clean burner (see Cleaning

pilot is lit or cycles during

 

 

 

and Maintenance, page 24)

operation.

 

 

 

or replace burner orifice

 

2.

Inlet gas pressure is too

2.

Contact local propane/LP or

 

 

low

 

natural gas company

 

3.

Thermopile leads dis-

3.

Reconnect leads

 

 

connected or improperly

 

 

 

 

connected

 

 

 

4.

Thermopile is defective

4.

Replace thermopile

 

5.

Improper venting or exces-

5.

Have the vent system in-

 

 

sive blockage

 

spected, including the ter-

 

 

 

 

mination cap. Remove any

 

 

 

 

restriction or obstruction

 

 

 

 

Delayed ignition at burner

1. Manifold pressure too

1.

Contact local propane/LP or

 

 

low

 

natural gas company

 

2.

Burner porting or orifice

2.

Clean burner (see Cleaning

 

 

clogged

 

and Maintenance, page 24)

 

 

 

 

or replace burner orifice

 

 

 

 

Burner backfiring during com-

1. Burner orifice is clogged or

1.

Clean burner (see Cleaning

bustion

 

damaged

 

and Maintenance, page 24)

 

 

 

 

or replace burner orifice

 

2.

Damaged burner

2.

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas control

Slight smoke or odor during initial operation

1.Residues from manufac- turing processes and logs curing

1.Problem will stop after a few hours of operation

117437-01D

www.desatech.com

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Contents
VCB36NE and VCB36PE ModelsTable of Contents Safety Local Codes Product IdentificationProduct Features Pre-Installation PreparationLocation and space requirements Ceiling to Louver & Front Packaging and RemovalClearances Framing and Finishing37.5 cm 91.4 cm 36 1/4 92.1 cm 14 3/4Mantel from Mantel Depth Opening14 35.6 cm Venting Installation Installation PrecautionsVenting Installation Checking for Proper Venting Electrical Supply ConnectionRelilef With Strain Relief Installing Remote Receiver Installing Optional ControlsHigh Altitude Installation Installing Optional Wall Mount Switch GWMS2Ignition Installing and Activating the Remote ReceiverPlastic Mounting Clips Remote ReceiverWiring Diagrams Millivolt Wiring DiagramCheck GAS Type Fireplace InstallationInstalling Gas Piping to Fireplace Location Installation Items NeededChecking GAS Connections Connecting Fireplace to GAS SupplyEquipment Shutoff Valve Gas Meter Gas Valve Pressure Testing Fireplace Gas ConnectionsLouver Panels and Glass Door Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaGlass Panel Frame Rail Removing Louver PanelsSpring Clips Removing/Replacing Glass DoorInstalling Logs and Glowing Embers To Turn OFF GAS To Appliance Manual Ignition System For your safety Read before lightingOperating Fireplace Lighting InstructionsRod Manual Lighting ProcedureOptional Wireless Remote Operation Electronic Ignition System Lighting InstructionsVariable Control Knob Optional GWMS2 ON/OFF Wall Mounted SwitchOptional Hand-Held On/Off Series Model HRC100Burner Flame Patterns Pilot AssemblyAir Adjustment Setting Inspecting BurnersCleaning and Maintenance Glass DoorPilot and Burners Specifications Service HintsTechnical Services Troubleshooting Observed Problem Possible Cause RemedyOr replace ODS/pilot assembly Replace gas regulator Clogged Pilot is lit or cycles duringHave the vent system Low Natural gas company Burner porting or orificeBurner air adjustment Glass soots Flame impingement on Adjust the log set so LogsClogged burner tube Clean burner tube Orifice, adjust air shutterObserved Problem Possible Cause Remedy Statement above Gas leak. See WarningAccessories Replacement PartsParts Louver Assembly Burner Assembly Complete See pages 30Damper Assembly Wire Harness AssemblyParts KEY Description QTY 07/07 WarrantyKeep this Warranty Limited Warranty Vent Fireplace