Vanguard Heating WMH26TNB Troubleshooting, Continued, Observed Problem, Possible Cause, Remedy

Models: WMH26TNB

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Maintenance, page 19)

TROUBLESHOOTING

21

TROUBLESHOOTING

Continued

 

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

Burner does not light after ODS/pilot is lit

1.

Burner orifice is clogged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

 

nance, page 19) 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 Mainte-

 

 

 

 

 

nance, page 19) or replace burner orifice

 

 

 

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

 

nance, page 19) 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 combustion

1.

Not enough air

1.

Check burner for dirt and debris. If

 

 

 

 

 

found, clean burner (see Cleaning and

 

 

 

 

 

Maintenance, page 19)

 

 

2.

Gas regulator defective

2.

Replace gas regulator

 

 

 

 

 

 

 

 

Slight smoke or odor during initial operation

1.

Residues from manufacturing processes

1.

Problem will stop after a few hours of

 

 

 

 

 

operation

 

 

 

 

 

 

 

 

Fireplace produces a whistling noise when

1.

Turning control knob to HI position

1.

Turn control knob to LO position and

 

burner is lit

 

when burner is cold

 

let warm up for a minute

 

 

2.

Air in gas line

2.

Operate burner until air is removed from

 

 

 

 

 

line. Have gas line checked by local pro-

 

 

 

 

 

pane/LP gas company

 

 

3.

Air passageways on fireplace blocked

3.

Observe minimum installation clear-

 

 

 

 

 

ances (see pages 8 through 10)

 

 

4.

Dirty or partially clogged burner orifice

4.

Clean burner (see Cleaning and Mainte-

 

 

 

 

 

nance, page 19) or replace burner orifice

White powder residue forming within burner box or on adjacent walls or furniture

1.When heated, vapors from furniture pol- ish, wax, carpet cleaners, etc. may turn into white powder residue

1.Turn heater off when using furniture polish, wax, carpet cleaners, or similar products

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Vanguard Heating WMH26TNB Troubleshooting, Continued, Observed Problem, Possible Cause, Remedy, Maintenance, page