www.usaprocom.com
200159-01B
26
Problem
Possible Cause
Corrective Action
Heater produces a whis-
tling noise when burner
is lit.
1. Turning control knob to high
(5) position when burner is
cold.
2. Air in gas line.
3. Air passageways on heater
are blocked.
4. Dirty or partially clogged
burner orifice.
1. Turn control knob to low (1)
position and let warm up for
a minute.
2. Operate burner until air is
removed from line. Have gas
line checked by local gas
supplier.
3 Observe minimum installa-
tion clearances (Figure 4,
page 9)
4 Clean burner (see
Care and
Maintenance
, page 21) or
replace burner orifice.
Heater produces a click-
ing/ticking noise just after
burner is lit or shut off.
1. Metal is expanding while
heating or contracting while
cooling.
1. This is common with most
heaters. If noise is exces-
sive, contact qualified ser-
vice technician.
White powder residue
forming within burner
box or on adjacent walls
or furniture
1. When heated, the vapors
from furniture polish, wax,
carpet cleaners, etc., turn
into white powder residue.
1. Turn heater off when using
furniture polish, wax, carpet
cleaner or similar products.
Heater shuts off in use
(ODS operates).
1. Not enough fresh air is avail-
able.
2. Low line pressure.
3. ODS/pilot is partially
clogged.
1. Open window and/or door for
ventilation.
2. Contact local gas supplier.
3. Clean ODS/pilot (see
Care
and Maintenance
, page 21).
Gas odor exists even
when control knob is in
OFF position.
1. Gas leak. See
Warning
Statement
at top of page 23.
2. Control valve is defective.
1. Locate and correct all leaks
(see
Checking Gas Connec-
tions
, page 16).
2. Contact customer service.
Moisture/condensation
noticed on windows.
1. Not enough combustion/
ventilation air.
1. Refer to
Air for Combus-
tion and Ventilation
require-
ments, page 7.
TROUBLESHOOTING
