Procom MN180TPH Installation & Operation Instructions page 20

PROBLEM
Burner(s) does not light after
ODS/pilot is lit.
Delayed ignition of burner(s).
Burner backfiring during com-
bustion.
Yellow flame during burner
combustion.
Slight smoke or odor during
initial operation.
Heater produces a whistling
noise when burner is lit.
Heater produces a clicking/tick-
ing noise just after burner is lit
or shut off.
White powder residue forming
within burner box or on adja-
cent walls or furniture.
POSSIBLE CAUSE
1. Burner orifice is clogged.
2. Burner orifice diameter is too small.
3. Inlet gas pressure is too low.
1. Manifold pressure is too low.
2. Burner orifice is clogged.
1. Burner orifice is clogged or damaged.
2. Burner is damaged.
3. Gas regulator is defective.
1. Not enough air.
2. Gas regulator is defective.
3. Inlet gas pressure is too low.
1. Residues from manufacturing pro-
cesses.
1. Turning control knob to HI position
when burner is cold.
2. Air in gas line.
3. Air passageways on heater are
blocked.
4. Dirty or partially clogged burner ori-
fice.
1. Metal is expanding while heating or
contracting while cooling.
1. When heated, the vapors from furni-
ture polish, wax, carpet cleaners, etc.,
turn into white powder residue.
1. Clean burner orifice (see Care and
Maintenance, page 17) or replace
burner orifice.
2. Replace burner orifice.
3. Contact local gas supplier.
1. Contact local gas supplier.
2. Clean burner (see Care and Main-
tenance, page 17) or replace burner
orifice.
1. Clean burner orifice (see Care and
Maintenance, page 17) or replace.
2. Contact customer service.
3. Replace gas supplier.
1. Check burner for dirt and debris. If
found, clean burner (see Care and
Maintenance, page 17).
2. Replace gas regulator.
3. Contact local gas supplier.
1. Problem will stop after a few hours of
operation.
1. Turn control knob to LO 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 installation clear-
ances (Figure 4, page 9).
4. Clean burner (see Care and Main-
tenance, page 17) or replace burner
orifice.
1. This is common with most heaters. if
noise is excessive, contact qualified
service technician.
1. Turn heater off when using furniture
polish, wax, carpet cleaner, or similar
products.
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REMEDY