Procom QD250T Manual page 23

OBSERVED PROBLEM
Slight smoke or odor during
initial operation
Heater produces a whistling
noise when burner is lit.
Heater produces a
clicking/ticking
noise just after burner is
lit or shut off.
White powder residue
forming within burner box or
on adjacent walls or furniture
Heater produces
unwanted odors.
Heater shuts off in use (ODS
operates).
Gas odor exists even
when control knob is in OFF
position.
Moisture/condensation
noticed on windows.
PROBABLE CAUSE
1. Residues from manufacturing
process.
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. Metal is expanding while heating
or contracting while cooling.
1. When heated, the vapors from
furniture polish, wax, carpet cleaners,
etc., turn into white powder residue.
1. Heater is burning vapors from
paint, hair spray, glues, etc. (See
IMPORTANT statement page 21).
2. Gas leak. See Warning
Statement at the top of page 21.
3. Low fuel supply.
1. Not enough fresh air is available.
2. Low line pressure.
3. ODS/pilot is partially clogged.
1. Gas leak. See Warning
Statement at top of page
21.
2. Control valve is defective.
1. Not enough combustion/
ventilation air.
1. Problem will stop after a few hours of
operation.
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
propane/LP Gas Company.
3. Observe minimum installation
clearances (Figure 4, page 10)
5. Clean burner (see Care and
Maintenance Page 20) or replace
burner orifice.
1. This is common with most
noise is excessive, contact qualified
service technician.
1. Turn heater off when using furniture
polish, wax, carpet cleaner or similar
products.
1. Ventilate room. Stop using odor causing
products while heater is running.
2. Locate and correct all leaks (see
Checking Gas Connections, page 14).
3. Refill supply tank (Propane/ LP models).
1. Open window and/or door for
ventilation.
2. Contact local gas supplier.
3. Clean ODS/pilot (see Care and
Maintenance, page 20).
1. Locate and correct all leaks
(see "Checking Gas Connections",
page 14).
2. Contact customer service.
1. Refer to "Air for Combustion and
Ventilation" requirements page 7.
23
REMEDY
heaters. If