Napoleon GDS50N Operating Instructions Manual page 43

SYMPTOM
Pilot will not light.
PILOT
BURNER
THERMOPILE
THERMOCOUPLE
Flames are consistently
too large or too small.
Carboning occurs.
Flames are very aggressive.
Carbon is being
deposited on glass, logs
or combustion chamber
surfaces.
White / grey fi lm forms.
Exhaust fumes smelled in
room, headaches.
Remote wall switch is in
'OFF' position; main burner
comes on when gas knob
is turned to 'ON' position.
PROBLEM
No spark at pilot burner.
Out of propane gas.
Spark gap is incorrect.
No gas at the pilot burner.
Unit is over-fi red or underfi red.
A
B
Door is ajar.
Air shutter has become
blocked.
Flame is impinging on the logs
or combustion chamber.
Sulphur from fuel is being
deposited on glass, logs or
combustion chamber surfaces.
Appliance is spilling.
Wall switch is mounted upside down.
Remote wall switch is grounding.
Remote wall switch wire is grounding.
Faulty valve.
TEST SOLUTION
- Check if pilot can be lit by a match.
- Check that the wire is connected to the push button igniter.
- Check if the push button igniter needs tightening.
- Replace the wire if the wire insulation is broken or frayed.
- Replace the electrode if the ceramic insulator is cracked
or broken.
- Replace the push button ignitor
- Fill the tank.
- Spark gap should be 0.150" to 0.175" (5/32" to 11/64"
approx.) from the electrode tip and the pilot burner. To
ensure proper electrode location, tighten securing nut
(fi nger tight plus 1/4 turn).
- Check that the manual valve is turned on.
- Check the pilot orifi ce for blockage.
- Replace the valve.
- Call the gas distributor.
- Check pressure readings:
- Inlet pressure can be checked by turning screw (A)
counter-clockwise 2 or 3 turns and then placing pressure
gauge tubing over the test point. Gauge should read
7" (minimum 4.5") water column for natural gas or 13"
(minimum 11") water column for propane. Check with
main burner is operating on 'HI'.
- Outlet pressure can be checked the same as above
using screw (B). Gauge should read 3.5" water column
for natural gas or 10" water column for propane. Check
that main burner is operating on 'HI'.
- AFTER TAKING PRESSURE READINGS, BE SURE TO
TURN SCREWS CLOCKWISE FIRMLY TO RESEAL.
DO NOT OVER TORQUE.
- Leak test with a soap and water solution.
- Ensure the mechanical means of securing the door is
providing a tight seal.
- Ensure air shutter opening is free of lint or other
obstructions.
- Check that the logs 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 by the rating plate values.
- Check that the door gasketing is not broken or missing
and that the seal is tight.
- Check that both vent liners are free of holes and well
sealed at all joints.
- Check that minimum rise per foot has been adhered to
for any horizontal venting.
- Clean the glass with a recommended gas appliance
glass cleaner.
- DO NOT CLEAN GLASS WHEN HOT.
- If deposits are not cleaned off regularly, the glass may
become permanently marked.
- Ensure exhaust bracket gasket seal.
- Check door seal and relief fl ap seal.
- Check for chimney blockage.
- Check that chimney is installed to building code.
- Room is in negative pressure; increase fresh air supply.
- Check cap gasket on the fl ue pipe assembly.
- Reverse.
- Replace.
- Check for ground (short); repair ground or replace wire.
- Replace.
43
42.3_2B
W415-0098 / H / 03.19.12