MHSC Duzy VDY24 Installation And Operating Instructions Manual page 29

TROUBLESHOOTING
Problem
Pilot lights, but flame goes
out when control knob is
released.
One or both burners do not
light after pilot is lit.
Burner backfires during
combustion.
Slight smoke or odor dur-
ing initial operation.
Logs appear to smoke
after initial operation.
Heater produces a whis-
tling noise when burner is
lit.
No gas to pilot.
If the gas quality is bad, your pilot may not
stay lit, the burners may produce soot and
the heater may backfire when lit. If the gas
quality or pressure is low, contact your local
gas supplier immediately.
32D1999
Possible Cause
1. Control knob not fully pressed in.
2. Control knob not pressed in long
enough.
3. Manual shutoff valve not fully open.
1. Burner orifice is clogged or damaged
2. Burner is damaged.
3. Gas regulator defective.
1. Manifold Pressure is too low.
2. Burner orifice is clogged.
1. Burner orifice is clogged or dam-
aged.
2. Burner is damaged.
3. Gas regulator is defective.
1. Vapors from paint or curing process
of logs.
1. Turning control knob to HIGH posi-
tion when burner is cold.
2. Air in gas line.
3. Dirty or partially clogged burner
orifices.
1. LP regulator shut down due to inlet
pressure too high.
"Duzy" Series Vented Gas Log Sets
Solution
1. Press in control knob fully.
2. After ODS/pilot lights, keep control knob
pressed in for 30 seconds.
3. Fully open manual shutoff valve.
1. Clean burner or replace burner orifice.
2. Replace burner orifice.
3. Contact qualified service person.
1. Contact local gas company.
2. Clean burner or replace burner orifice.
1. Clean burner or replace burner orifice.
2. Replace burner.
3. Replace gas regulator.
1. Problem will stop after a few hours of
operation.
2. Log heater is intended to be smoke-
less. Turn OFF heater and call qualified
service person.
1. Turn control knob to ON position and let
warm up for a minute.
2. Operate burner until air is removed from
line. Have gas line checked by local gas
company.
3. Clean burner or replace burner orifice.
1. Verify LP tank regulator is installed and
set at 11" to 13" w.c.
2. Replace regulator on heater.
29