HearthSense VFL18M Manual Del Usuario página 26

Problem
Burner does not light after
ODS/pilot is lit.
Delayed ignition of
burner.
Burner backfiring during
combustion.
Excessive yellow flame
during burner combus-
tion (more than 8").
Slight smoke or odor
during initial operation.
Gas odor during com-
bustion.
Heater produces un-
wanted odors.
26
TROUBLESHOOTING
Possible Cause
1. Burner orifice is clogged.
2. Inlet gas pressure is too low.
3. Burner orifice diameter is too
small.
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 damaged.
1. Not enough air.
2. Inlet gas pressure is too low.
3. Bypass valve open with unit
connected to propane gas
(see Pressure Switch, page
24).
4. Gas regulator is defective.
1. Residues from manufactur-
ing process.
1. Foreign matter between
control valve and burner.
2. Gas leak. (See Warning
Statement at top of page 24).
1. Heater is burning vapors from
paint, hair spray, glues, etc.
See IMPORTANT statement,
page 24.
2. Gas leak. See Warning State-
ment at the top of page 24.
3 Low fuel supply.
HearthSense
Corrective Action
1. Clean burner orifice (see
Care and Maintenance,
page 23
2. Contact local gas supplier.
3. Replace heater chassis.
1. Contact local gas supplier.
2. Clean burner (see Care and
Maintenance, page 23).
1. Clean burner orifice (see
Care and Maintenance,
page 23).
2. Contact dealer or customer
service.
3. Replace heater chassis.
1. Check burner for dirt and
debris. If found, clean burner
(see Care and Maintenance,
page 23).
2. Contact local gas supplier.
3. Turn unit off. Verify gas con-
nection to proper gas type.
Close bypass. Never open
bypass on propane gas!
4. Replace heater chassis.
1. Problem will stop after a few
hours of operation.
1. Contact a qualified service
technician to remove foreign
matter.
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 17).
1. Open a window to ventilate
room. Stop using odor caus-
ing products while heater is
running.
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 17).
3. Refill supply tank (Propane
models).
200549-04A