® VP5D AND VP10A

PROPANE/LP GAS HEATERS

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

Burner(s) does not light after ODS/pilot is lit

1.

Burner orifice(s) is clogged

1.

Clean burner orifice(s) (see Cleaning

 

 

 

 

and Maintenance, page 12) or replace

 

2.

Burner orifice(s) diameter is too small

 

burner orifice(s)

 

2.

Replace burner orifice(s)

 

3.

Inlet gas pressure is too low

3.

Contact local propane/LP gas company

 

 

 

 

 

Delayed ignition of burner(s)

1.

Manifold pressure is too low

1.

Contact local propane/LP gas company

 

2.

Burner orifice(s) is clogged

2.

Clean burner orifice(s) (see Cleaning

 

 

 

 

and Maintenance, page 12) or replace

 

 

 

 

burner orifice(s)

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice(s) is clogged or damaged

 

2.

Inlet gas pressure is too low

 

3.

Burner damaged

 

4.

Gas regulator defective

1.Clean burner orifice(s) (see Cleaning and Maintenance, page 12) or replace burner orifice(s)

2.Contact local propane/LP gas company

3.Replace burner

4.Replace gas regulator

Burner plaque(s) does not glow

1.

Plaque damaged

 

2.

Inlet gas pressure is too low

 

3.

Control knob set between locked positions

1.Replace burner

2.Contact local propane/LP gas company

3.Turn control knob until it locks at de- sired setting

Slight smoke or odor during initial operation

1.

Residues from manufacturing processes

1.

Problem will stop after a few hours of

 

 

 

 

operation

 

 

 

 

 

Heater produces a clicking/ticking noise

1.

Metal expanding while heating or con-

1.

This is common with most heaters. If

just after burner is lit or shut off

 

tracting while cooling

 

noise is excessive, contact qualified ser-

 

 

 

 

vice person

 

 

 

 

 

White powder residue forming within burner

1.

When heated, vapors from furniture pol-

1.

Turn heater off when using furniture

box or on adjacent walls or furniture

 

ish, wax, carpet cleaners, etc. turn into

 

polish, wax, carpet cleaners, or similar

 

 

white powder residue

 

products

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Desa VP5D installation manual Vice person