Vanguard Heating VSGF28PTC - Manual (Page 20)

20 107156
UNVENTED PROPANE/LP GAS FIREPLACE
®
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TROUBLESHOOTING
Continued
OBSERVED PROBLEM
One or both burners do not light after ODS/
pilot is lit
Delayed ignition of one or both burners
Burner backfiring during combustion
Yellow flame in front burner during burner
combustion
Slight smoke or odor during initial operation
Fireplace produces a whistling noise when
burners are lit
White powder residue forming within burner
box or on adjacent walls or furniture
Dark residue on logs or inside of fireplace
Note: After removing all causes of residue
deposits, completely clean fireplace and ap-
pliance of all residue before reusing appliance.
REMEDY
1. Clean burner(s) (see Cleaning and Main-
tenance, page 18) or replace burner
orifice(s)
2. Replace burner orifice(s)
3. Contact local propane/LP gas company
4. Contact qualified service person
1. Contact local propane/LP gas company
2. Clean burner(s) (see Cleaning and Main-
tenance, page 18) or replace burner
orifice(s)
3. Contact qualified service person
1. Clean burner (see Cleaning and Mainte-
nance, page 18) or replace burner orifice
2. Replace damaged burner
3. Replace gas regulator
1. Check burner(s) for dirt and debris. If
found, clean burner(s) (see Cleaning and
Maintenance, page 18)
2. Replace gas regulator
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 burners until air is removed
from line. Have gas line checked by lo-
cal propane/LP gas company
3. Observe minimum installation clear-
ances (see pages 8 through 10)
4. Clean burners (see Cleaning and Main-
tenance, page 18) or replace burner
orifice(s)
1. Turn heater off when using furniture
polish, wax, carpet cleaners, or similar
products
1. Properly locate logs (see Installing Logs,
page 13)
2. Eliminate source of drafts around heater
3. Clean out air holes at burner inlet. Peri-
odically repeat as needed
4. Remove blockage or replace burner
POSSIBLE CAUSE
1. Burner orifice(s) clogged
2. Burner orifice(s) diameter is too small
3. Inlet gas pressure is too low
4. Mislocated crossover tube
1. Manifold pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
1. Burner orifice is clogged or damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
1. Residues from manufacturing processes
and logs curing
1. Turning control knob to HI position
when burners are cold
2. Air in gas line
3. Air passageways on fireplace blocked
4. Dirty or partially clogged burner
orifice(s)
1. When heated, vapors from furniture pol-
ish, wax, carpet cleaners, etc. may turn
into white powder residue
1. Improper log placement
2. Drafts or other air currents affecting
flame pattern
3. Air holes at burner inlet blocked
4. Burner flame holes blocked
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