www.usaprocom.com
200403-01A
22
TROUBLESHOOTING
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 re-
moved from line. Have gas line
checked by local gas supplier.
3
Observe minimum installation
clearances (Figure 4, page 9).
4 Clean burner (see
Care and
Maintenance
, page 19).
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 produces un-
wanted odors.
1.
Heater is burning vapors from
paint, hair spray, glues, etc. See
IMPORTANT statement, page 20.
2. Gas leak. See Warning State-
ment at the top of page 20.
3 Low fuel supply (propane/LP
gas only).
1. Ventilate room. Stop using
odor causing products while
heater is running.
2. Locate and correct all leaks
(see
Checking Gas Connec-
tions
, page 15).
3. Refill supply tank (Propane/
LP models).
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 19).
Gas odor exists even
when control knob is in
OFF position.
1. Gas leak. See Warning
Statement at top of page 20.
2. Control valve is defective.
1. Locate and correct all leaks
(see
Checking Gas Connec-
tions
, page 15).
2. Replace control valve.
Moisture/condensation
noticed on windows.
1. Not enough combustion/
ventilation air.
1. Refer to
Air for Combus-
tion and Ventilation
require-
ments, page 7.
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• propane/LP gas supply might be low (propane/LP units only)
You may feel your gas pressure is too low. If so, contact your local gas supplier.
