Trouble-Shooting; Gas Pressure - Jøtul GF 100 BF2 Instrucciones Para Instalación

10.0 Trouble-shooting

10.1 When no spark is generated at the
pilot head (fig. 10)
It is uncommon for the spark ignitor to fail, unless it has
mechanical damage. If the spark is not conducted forward, it
could be the result of a break in the electrical circuit leading
up to the pilot head. The spark is «small» or weak if there is too
much resistance from a bent wire, or if corrosion appears at the
electrode (A) or the pilot head (B). This could result in insufficient
heat to light the gas. Inspect the pilot burner by looking for
damage to the individual parts. Check for damaged wires or
wires crushed between plate sections of the stove and check
for loose connections.
Follow the trouble-shooting procedure below when no
sparks are generated at the pilot head:
• Make sure the spark gap between electrode (A) and pilot head
(B) is smaller than or equal to 3.2 mm.
• If the electrode is not damaged or loose, check the wire
from the electrode to the spark ignitor mounted on the gas
valve.
• Make sure the insulated wire is intact and without cracks and
properly connected between the valve and electrode.
• If not: properly fasten the insulated wire to establish a
connection between the spark ignitor and the electrode.
Replace if the wire is damaged or cracked.
• Make sure the ceramic insulation (C) is intact and without
cracks.
• If not: Replace the electrode.

10.2 Gas pressure

Correct gas pressure is important: See section about gas pressure
under gas installation. The gas pressure before the valve and the
gas pressure from the valve to the main burner and pilot burner,
are equally important. These parameters may be the cause of
various problems with the stove, for example:
If the gas pressure is too low it will cause:
• Low pilot flame,
• insufficient production of electricity at thermocouple,
• poor flame pattern.
If the gas pressure is too high it will cause:
Extreme cases where the valve is damaged when the pressure
rises above 60 mbar. This is usually the result of
• faulty installation or
• lack of a gas regulator on the gas tank or cylinder.
High gas pressure may also cause an abnormally large pilot
flame, which can overheat the thermopile and thermocouple, and
further cause a shutoff of the valve due to insufficient millivolt
production.
• Problems involving high flames and soot indicate that the air
volume is too small in relation to the gas volume.
• Checking the gas pressure before the valve will uncover faults
in the gas supply at the valve or from the tank/cylinder.
• If the gas pressure to the valve is correct, the fault must
be found after the valve. A measurement performed with
a manometer (fig. 11) will help you to swiftly uncover and
eliminate sources of errors.
• As mentioned above, blocked or poor gas supply may lead to
faulty combustion. Make sure all gas tubes are dirt-free, as
a small dust particle can obstruct the pilot jet. Components
must remain free of dirt during installation of the gas supply
and connection to the stove, and when the valve is being
replaced.
10.3 When there is no gas flow at the
pilot head
This is the trouble-shooting procedure for the gas supply:
• Check if all gas connections are sealed by using leak detector
solution (avoid synthetic soaps).
• Then make sure all valves from the gas tank/cylinder are
open.
• When the pilot is to be lit for the first time with a new
installation, after a scheduled disconnection or after the
propane tank has been refilled, there will often be air in the
gas tube leading up to stove. The tube system must be cleared
of air before the pilot burner can be lit. The recommended
method for clearing air out of the tube system, is to push in
the gas control knob and turn anti-clockwise to «PILOT».
• If the pilot does not light after attempts to clear the tube
system of air, it indicates is a problem with the gas tank/
cylinder or a leak in the gas tube. Check the gas pressure
as instructed in the section Gas Installation and find out if
the fault/leak is before or after the valve on the stove. If the
gas pressure at outlet (A fig. 7) is too low or there is no gas
pressure at all, the fault or leak must be located before the
valve on the stove. If the gas pressure is OK at outlet (A), but
too low at outlet (B), then the fault or leak must be located
after the valve.
• If gas tubes are dismantled, all gas tubes must be reinstalled
and checked for gas leaks prior to operating the stove.
10.4 When the pilot goes out –
problems with the gas supply
This is the trouble-shooting procedure for the gas supply:
• Remember to push in the gas control knob (fig. 9-1 ) for at
least 15 seconds.
• Make sure the flame is centred at the thermocouple.
• Make sure the thermocouple is enveloped by the flame up to
at least 3 mm (1/8") from the tip (fig. 8).
• If the flame is abnormally large or small, check the gas
pressure first. See section about gas pressure.
• Then check for errors, dirt or corrosion on the pilot burner
(fig. 10B), the pilot orifice (fig. 10D) and the gas supply (fig.
10E) to the pilot burner.
Note! There could be a leak after the valve even if the pressure is OK
at the left outlet. You should therefore always check for leakage.
ENglish
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