Empire Comfort Systems VFD20MS30N-1 Installation Instructions And Owner's Manual page 27

MILLIVOLT TROUBLESHOOTING (CONT'D)
9. Slight smoke or odor during initial operation.
a. Residues from manufacturing processes and logs curing -
Problem will stop after a few hours of operation.
10. Heater produces a whistling noise when main burner is
lit.
a. Turning control knob to HI position when main burner is
cold - Turn control knob to LO position and let warm up for
a minute.
b. Air in gas line - Operate main burner until air is removed
from line. Have gas line checked by local gas company.
c. Air passageways on heater blocked - Observe minimum
installation clearances (see page 9).
d. Dirty or partially clogged main burner orifice - Clean main
burner and main burner orifice or replace main burner
orifice.
11. Heater produces a clicking/ticking noise just after main
burner is lit or shut off.
a. Metal expanding while heating or contracting while cooling
- This is common with most heaters. If noise is excessive,
contact service person.
42605-3-0621
12. Heater produces unwanted odor.
a. Heater burning vapors from paint, hair spray, glues, cleaners,
chemicals, new carpet, etc. - Open window to ventilate
room. Stop using odor causing products while heater is
operating.
b. Low fuel supply - Refill supply tank.
c. Gas leak - Locate and correct all leaks.
13. Heater shuts off in use (ODS operates).
a. Not enough fresh air is available - Open window and/or door
for ventilation.
b. Low line pressure - Contact local gas company.
c. ODS/pilot is partially clogged - Clean ODS/pilot.
14. Gas odor even when control knob is in OFF position.
a. Gas leak - Locate and correct all leaks.
b. Control valve defective - Replace control valve.
15. Gas odor during combustion.
a. Foreign matter between logs and main burner - remove
foreign matter.
b. Gas leak - Locate and correct all leaks.
16. Doors open on their own.
a. Casting not level.
- Loosen front leveling bolts to elevate front of casting slightly
above the rear of casting.
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