Vanguard Heating VMH26TPC, VMH26TNC, 000 to 26 installation manual See Cleaning and Mainte

Page 24

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

ODS/pilot lights but flame goes

1. Control knob not fully

1.

Press in control knob fully

out when control knob is re-

 

pressed in

 

 

leased

2. Control knob not pressed in

2.

After ODS/pilot lights, keep

 

 

long enough

 

control knob pressed in 30

 

 

 

 

seconds

 

3.

Safety interlock system has

3.

Wait one minute for safety in-

 

 

been triggered

 

terlock system to reset. Repeat

 

 

 

 

ignition operation

 

4.

Equipment shutoff valve not

4.

Fully open equipment shutoff

 

 

fully open

 

valve

 

5.

Thermocouple connection

5.

Hand tighten until snug, then

 

 

loose at control valve

 

tighten 1/4 turn more

 

6.

Pilot flame not touching ther-

6.

A) Contact local propane/LP

 

 

mocouple, which allows ther-

 

or natural gas company

 

 

mocouple to cool, causing pi-

 

 

 

 

lot flame to go out. This prob-

 

B) Clean ODS/pilot (see

 

 

lem could be caused by one or

 

Cleaning and Maintenance,

 

 

both of the following:

 

page 22) or replace ODS/pi-

 

 

A) Low gas pressure

 

lot assembly

 

 

B) Dirty or partially clogged

 

 

 

 

ODS/pilot

 

 

 

7.

Thermocouple damaged

7.

Replace pilot assembly

 

8.

Control valve damaged

8.

Replace control valve

 

 

 

 

Burner does not light after ODS/

1. Burner orifice is clogged

1.

Clean burner (see Cleaning

pilot is lit

 

 

 

and Maintenance, page 22) or

 

 

 

 

replace burner orifice

 

2.

Inlet gas pressure is too low

2.

Contact local propane/LP or

 

 

 

 

natural gas company

 

 

 

 

Delayed ignition of burner

1. Manifold pressure is too low

1.

Contact local propane/LP or

 

 

 

 

natural gas company

 

2.

Burner orifice is clogged

2.

Clean burner (see Cleaning

 

 

 

 

and Maintenance, page 22) or

 

 

 

 

replace burner orifice

 

 

 

 

Burner backfiring during com-

1. Burner orifice is clogged or

1.

Clean burner (see Cleaning

bustion

 

damaged

 

and Maintenance, page 22) or

 

 

 

 

replace burner orifice

 

2.

Burner damaged

2.

Replace burner pressure

 

3.

Low inlet gas pressure

3.

Contact local propane/LP or

 

 

 

 

natural gas company

 

4.

Gas regulator defective

4.

Replace gas regulator

 

 

 

 

Yellow flame during burner

1. Not enough air

1.

Check burner for dirt and de-

combustion

 

 

 

bris. If found, clean burner

 

 

 

 

(see Cleaning and Mainte-

 

 

 

 

nance, page 22)

 

2.

Gas regulator defective

2.

Replace gas regulator

24

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Image 24
Contents Shown with Optional Cabinet Mantel/Hearth Base Accessory What to do if YOU Smell GASTable of Contents Safety Information Local Codes Product IdentificationProduct Features AssemblyUnpacking AIR for Combustion Ventilation Providing Adequate VentilationAssembling Hood Unusually Tight ConstructionDetermining FRESH-AIR Flow for Fireplace Location Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Installation Installation ItemsCheck GAS Type BUILT-IN Fireplace Installation Locating FireplaceRough Opening for Installing Wall Optional Mantel Installation Mantel Clearances for Built-In InstallationInstalling Blower Accessory GA3450T Removing Upper Louver AssemblyAssembling Perimeter Trim Trim Shipped with Mantel Removing Valve Cover ShieldInstalling Blower Assembly Removing Valve Cover ShieldInstalling Switch Plate to Valve Cover Shield For Built-In InstallationConnecting to GAS Supply Attaching Wood Base to Solid FloorExtension Cord Connecting Equipment Shutoff Valve to Heater Control Installation Items NeededPressure Testing Gas Supply Piping System Pressure Testing Fireplace Gas ConnectionsChecking GAS Connections For Your Safety Read Before Lighting Operating FireplaceLighting Instructions Manual Lighting Procedure To Turn OFF GAS To ApplianceThermostat Control Operation Shutting Off Fireplace Inspecting Burner Operating Blower Burner Flame Pattern Pilot Flame PatternCleaning Maintenance Burner Injector Holder and Pilot AIR Inlet HoleCabinet Air PassagewaysTroubleshooting Observed Problem Possible Cause RemedySee Cleaning and Mainte Residues from manufacturing Gas leak. See Warning Statement aboveSpecifications Service HintsTechnical Service Replacement PartsIllustrated Parts Breakdown Parts List Accessories Cleaning KIT GCK Corner Mantel with Full Hearth BaseCabinet Mantel and Full Hearth Base Information VideoWarranty Information Keep this WarrantyLimited Warranty VENT-FREE Compact Classic Hearth Fireplace