Napoleon Castlemore GDS26N Installation And Operating Instructions Manual page 46

46
SYMPTOM
Continues to
spark and pilot
lights, but main
burner will not
light.
Pilot lights
Stops sparking
/ pilot remains
lit but burner
will not turn on.
Exhaust fumes
smelled in room,
headaches.
Flames are very
aggressive.
Main burner
fl ame is a
blue, lazy,
transparent
fl ame.
White / grey
fi lm forms.
W415-0827 / A / 06.07.10
PROBLEM
Short or loose
connection in sensor
rod.
Poor fl ame rectifi cation
or contaminated
sensor rod.
Poor grounding
between
pilot assembly and
gas valve.
Damaged pilot or dirty
sensor rod.
Wiring / Connection.
Wiring harness.
Module or Valve.
Appliance is spilling.
Door is ajar.
Venting action is too great.
Blockage in vent.
Compromised venting.
Sulphur from fuel
is being deposited
on glass, logs or
combustion chamber
surfaces.
TEST SOLUTION
- Verify all connections. Verify the connections from the pilot
assembly are tight; also verify these connections are not
grounding out to any metal.
- 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.
- 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.
- 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.
- Inspect all wires, ensure good tight connections. Verify that
all wiring is installed exactly as specifi ed.
- 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.
- Conduct the following test to verify if the problem is the
module or valve. To measure voltages, turn multimeter to
"DC" place the red lead from multimeter on the screw on the
terminal block for the wire you are checking, touch black lead
to ground (valve body). Importantly, a "Zero" volts reading
does not automatically indicate a bad module, there may be
too high resistance in the valve solenoid. Check the green
wire disconnected from valve that the voltage output from the
module should be between 2 and 3 volts.
- Check all seals.
- Tighten door clamps
- Restrict vent exit with restrictor plate. See Restricting Vents.
- Remove blockage. In really cold conditions, ice buildup
may occur on the terminal and should be removed as
required.
- Check venting system parameters (seal, length, rise, etc.).
- Clean the glass with a recommended gas fi replace glass
cleaner. DO NOT CLEAN GLASS WHEN HOT.
- If deposits are not cleaned off regularly, the glass may
become permanently marked.
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