Troubleshooting (Millivolt) - Napoleon Havelock GDS50-1NSB Installation And Operation Manual

WARNING
!
• Always light the pilot whether for the fi rst time or if the gas supply has run out, with the glass door open or
removed.
• Turn off gas and electrical power before servicing the appliance.
• Appliance may be hot. Do not service until appliance has cooled.
• Do not use abrasive cleaners
symptom
Main burner fl ame is a Blockage in vent.
blue, lazy, transparent
fl ame.
Main burner goes out; Pilot fl ame is not large enough or
pilot stays on. not engulfi ng the thermopile.
Thermopile shorting.
Remote wall switch wire is too
long; too much resistance in the
system.
Faulty thermostat or switch.
Main burner goes out; Refer to "MAIN BURNER GOES OUT; PILOT STAYS ON"
pilot goes out.
Vent is blocked
Vent is re-circulating
Flexible vent has become
disconnected from appliance.
Flames are consistently Appliance is over-fi red or
too large or too small. underfi red.
Carboning occurs.
INSERT
PHOTO
OF VALVE
HERE
Air shutter improperly adjusted.
Carbon is being Air shutter is blocked.
deposited on glass,
Flame is impinging on the
logs, rocks, media or
glass, logs, rocks, media or
combustion chamber
combustion chamber.
surfaces.
White / grey fi lm forms. Sulphur from fuel is being
deposited on glass, logs or
combustion chamber surfaces.
Exhaust fumes smelled Appliance is spilling.
in room, headaches. (This is not applicable in outdoor
appliances)
problem
- Remove blockage. In really cold conditions, ice buildup may occur on the
terminal and should be removed as required. To minimize this from happening
again, it is recommended that the vent lengths that pass through unheated
spaces (attics, garages, crawl spaces) be wrapped with an insulated mylar
sleeve. Prevent sleeve from sagging. Contact your local authorized dealer for
more information.
- Turn up the pilot fl ame.
- Replace pilot assembly.
- Clean thermopile connection to the valve. Reconnect.
- Replace thermopile / valve.
- Shorten wire to correct length or wire gauge.
- Replace.
- Check for vent blockage.
- Check joint seals and installation
- Re-attach to appliance.
- Cap was not replaced.
-
B A
Pressure
* Maximum inlet
pressure not to
exceed 13"
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troubleshooting (millivolt)

15.0 troubleshooting (millivolt)
test solution
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 as described on the chart below. Check that main burner is
operating on 'HI'. Outlet pressure can be checked the same as above using
screw (B). Gauge should read as described on the chart below. 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.
Natural Gas Natural Gas
(inches) (millibars)
* 13" 17.4mb
Inlet
(MIN. 4.5") (MIN. 11.2mb)
Outlet 3.5" 8.7mb
Return air shutter to specifi ed opening, see "venturi adjustment" section.
Ensure air shutter opening is free of lint or other obstructions.
Ensure the media is positioned correctly in the appliance.
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.
Ensure door gasketing is not broken or missing and the seal is tight.
Ensure vent liners are free of holes and well sealed at all joints.
Check that minimum rise per foot (meters) has been adhered to for any
horizontal venting.
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.
Check door seal.
Check for exhaust damage.
Check that venting is installed correctly.
Room is in negative pressure; increase fresh air supply.
Propane Propane
(inches) (millibars)
13" 32.4mb
(MIN. 11") (MIN. 27.4mb)
10" 24.9mb
W415-2348 / B / 01.22.20
EN
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