Vanguard VMH26TNC - Manual (Page 26)

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Continued
POSSIBLE CAUSE
1. Residues from manufactur-
ing processes
1. Turning control knob to HI
position when burner is
cold
2. Air in gas line
3. Air passageways on fire-
place blocked
4. Dirty or partially clogged
burner orifice
1. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. may turn into
white powder residue
1. Metal expanding while
heating or contracting while
cooling
REMEDY
1. Problem will stop after a few
hours of operation
1. Turn control knob to LO
position and let warm up
for a minute
2. Operate burner until air is
removed from line. Have
gas line checked by local
propane/LP gas company
3. Observe minimum installa-
tion clearances (see pages
9 through 12)
4. Clean burner (see Cleaning
and Maintenance, page 23)
or replace burner orifice
1. Turn heater off when us-
ing furniture polish, wax,
carpet cleaners, or similar
products
1. This is normal with most
fireplaces. If noise is ex-
cessive, contact qualified
service person
OBSERVED PROBLEM
Slight smoke or odor during
initial operation
Fireplace produces a whis-
tling noise when burner is lit
White powder residue form-
ing within burner box or on
adjacent walls or furniture
Fireplace produces a click-
ing/ticking noise just after
burner is lit or shut off