26
W415-1115 / 06.13.12
SYMPTOM
PROBLEM
TEST SOLUTION
Carbon is being
deposited on
glass, logs,
rocks, media
or combustion
chamber surfaces.
Air shutter has become
blocked.
-
Ensure air shutter opening is free of lint or other
obstructions.
Flame is impinging on the
glass, logs, rocks, media
or combustion chamber.
-
Check that the glass, logs, rocks or media are
correctly positioned.
-
Open air shutter to increase the primary air.
-
Check the input rate: check the manifold pressure
and orifi ce size as specifi ed in the instructions.
-
Check that the door gasketing is not broken or
missing and that the seal is tight.
Continues to
spark and pilot
lights, but main
burner will not
light.
Short or loose
connection in sensor rod.
-
Verify all connections. Verify the connections
from the pilot assembly are tight; also verify these
connections are not grounding out to any metal.
Poor fl ame rectifi cation
or contaminated
sensor rod.
-
Verify the fl ame is engulfi ng the sensor rod. This
will increase the fl ame rectifi cation. Verify correct
pilot orifi ce is installed and inlet gas specifi cations
to manual. (Remember, the fl ame carries the
rectifi cation current, not the gas. If the fl ame lifts
from pilot hood, the circuit is broken. A wrong orifi ce
or too high of an inlet gas pressure can cause
the pilot fl ame to lift.) The sensor rod may need
cleaning.
Poor grounding between
pilot assembly and
gas valve.
-
Verify that the wire harness is fi rmly connected to
module Verify that the ceramic insulator around the
sensor rod is not cracked, damaged, or loose. Verify
the connection from the sensor rod to the sensor wire.
Damaged pilot or dirty
sensor rod.
-
Clean sensor rod with an emery cloth to remove
any contamination that may have accumulated on
the sensor rod. Verify continuity with multimeter with
ohms set at the lowest range.
Pilot lights
Stops sparking
/ pilot remains lit
but burner will
not turn on.
Wiring / Connection.
-
Inspect all wires, ensure good tight connections.
Verify that all wiring is installed exactly as specifi ed.
Wiring harness.
-
Inspect the wiring harness, and verify the harness
is tightly connected to the module. Verify that all
wires are connected in the right order. See “WIRING
DIAGRAM” section.
White / grey fi lm
forms.
Sulphur from fuel is being
deposited on glass, logs or
combustion chamber
surfaces.
-
Clean the glass, see “CARE OF GLASS” section
DO NOT CLEAN GLASS WHEN HOT.
-
If deposits are not cleaned off regularly, the glass
may become permanently marked.
Noisy Burner
Media Placement.
-
In some installations, the glass media can lead to
a “puffi ng” sound. Simply remove media covering
burner ports.
42.20_2
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