W415-2164 / A / 07.21.16
22
EN
SYMPTOM
PROBLEM
TEST SOLUTION
Pilot goes out while
standing; Main burner is
in ‘OFF’ position.
Gas piping is undersized.
- Turn on all gas appliances and see if pilot flame
flutters, diminishes or extinguishes, especially when
main burner ignites. Monitor appliance supply
working pressure.
- Check if supply piping size is to code. Correct all
undersized piping.
Flames are consistently
too large or too small.
Carboning occurs.
Unit is over-fired or under-
fired.
- 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.
Carbon is being deposit-
ed on logs 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
logs or combustion cham-
ber.
- Check that the logs are correctly positioned.
- Open air shutter to increase the primary air.
- Check the input rate: check the manifold pressure
and orifice size as specified by the rating plate
values.
White / grey film forms.
Sulphur from fuel is being
deposited on glass, logs
or combustion chamber
surfaces.
- 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.
Remote wall switch is
in ’OFF’ position; main
burner comes on when
gas knob is turned to
‘ON’ position.
Wall switch is mounted
upside down.
- Reverse.
Remote wall switch is
grounding.
- Replace.
Remote wall switch wire is
grounding.
- Check for ground (short); repair ground or replace
wire.
Faulty valve.
- Replace.
PIL
O
T
Pressure
Inlet
Outlet
Natural Gas
(inches)
Natural Gas
(millibars)
Propane
(inches)
Propane
(millibars)
7"
(MIN. 4.5")
3.5"
13"
(MIN. 11")
10"
17.4mb
(MIN. 11.2mb)
8.7mb
32.4mb
(MIN. 27.4mb)
24.9mb
