Sherpa 901233, Safety Instructions And Operation Manual

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15
Problem Checklist
Problem Checklist
Problem Cause Solution
No spark at pilot when the
control knob is engaged and
turned counter clockwise to the
pilot position • Ignition positioned incorrectly
• Ignition electrode broken
• Ignition cable bent or broken
• Replace the ignition
• Free ignition cable . If
damaged, replace this part
There is spark but the heater
will not light • Gas supply turned off
• Control knob not in the pilot
position
• Control knob not pressed in
while in pilot position
• Pilot is clogged
• Air in gas pipe
• Turn on the gas supply
• Turn the variable knob to the
pilot position
• Press the control knob while
in the pilot position
• Call qualified gas engineer
• Air will disperse from the pipe
by pressing the control knob
continuously until there is a
slight smell of gas
Pilot light present but flame
goes out when the control knob
is released
• Control knob not being held in
for long enough
• Pilot flame not touching the
thermocouple . Problem could
be a result of one or both of
the following:
• Partially clogged pilot injector
• Low gas pressure
• Thermocouple damaged
• Thermocouple connection is
loose at gas control valve
• Gas control valve damaged
• After pilot lights keep control
knob pressed in for a further
30 seconds .
• Contact a qualified gas
engineer
• Replace thermocouple
• Tighten by hand then a further
¼ with a wrench
• Replace gas contro
l
Burner dos not light after pilot
is lit • Main burner injector clogged
• Low gas supply pressure
• Ensure the main burner is
clean
• Call gas supplier
Burner flame goes off
immediately after ignition
• Low gas pressure • Keep the pilot flame lit for 10
minutes before turning down
to LO setting
Delayed ignition • Main burner ports may be
blocked
• Low gas pressure
• Ensure that the burner is
clean
• Call your gas supplier
Inadequate combustion on
burner
• Not enough air within the unit • Check air passageways and
burners for dirt and debris .
Clean with compressed air