FAULT FINDING
Below is a list of some scenarios that may lead to a failure causing the burner
to go into lockout mode. There are also some relevant tests and solutions to
hopefully overcome any problem that may occur.
Push the reset button to re-start the burner. If the burner then functions
correctly the control has simply responded to a temporary fault. If the burner
still fails then a further investigation will be required to correct any fault.
Fault Probable cause Useful Test Solution
The burner will not start 1) Lack of voltage. 1) If there is 240V onto
terminal 9 of the control
box but it is not
responding then the box is
at fault.
2) If there is no voltage onto
terminal 9 then there is an
external fault.
1) Replace control box.
2) Check any thermostats,
switches, fuses, etc to
trace fault.
The burner starts but
no flame is present and
the burner goes to
lockout
1) No fuel to burner.
2) No fuel to the nozzle.
a) No voltage to
solenoid coil
b) Voltage to coil but
not energizing.
c) Coil energized but no
oil at pump outlet.
d) Oil at pump outlet
but none through the
nozzle.
3) No spark
1) Check if there is oil
present at the pump inlet
2)
a)
i) Cover photocell. If
burner fires up ok then
photocell must be
detecting a light source
during pre-purge.
ii) If there is still no flame
disconnect photocell. If
now ok then cell must
be faulty.
3) Check electrodes, HT
leads and voltage to igniter.
If all ok then igniter is faulty.
1) Check fuel tank, valves,
etc for problems.
2)
a)
i) Identify source, spark,
etc and remedy.
ii) Replace photocell
b) Replace coil.
c) Check valve opening.
Replace if necessary.
d) Replace nozzle, or
check line for blockage.
3) Replace igniter.
The burner starts, a
flame is established but
the burner goes to
lockout
1) Check burner wiring.
2) Flame recognition.
2) Expose photocell to
good ambient (or torch)
light.
a) If the problem
disappears then the
problem is with the flame
picture
b) If the problem does not
disappear then the
photocell must be at
fault
1) Remedy wiring
connections.
2)
a) Reset combustion.
b) Replace photocell.
E90-803-001-001-00 - 02/06
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