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W415-1101 / B / 07.29.13
22
EN
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 and remove them from direct
fl ame.
- Open air shutter to increase the primary air.
- Check the input rate: check the manifold pressure
and orifi ce size as specifi ed by the rating plate
values.
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 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
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. Check for shorted
wire or cracked insulator.
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.
Exhaust fumes
smelled in room,
headaches.
Appliance is spilling. - Check for chimney blockage
- Check that chimney is installed to building code.
- Room is in negative pressure; increase fresh air
supply
- Check damper positioning
42.25_2
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