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OVERVIEW OF SETTINGS
6.5
Oil Burner Fault Finding Chart
NOTE:
.
Symptom
Possible Cause
Action
A.
Burner will not start
1.
Electrical supply failure
1.
Check the following:
a. Main isolating switch of the bur-
ner is on.
b. Overload protective device of
the burner motor.
2.
Control thermostat time or water
pressure switches or other boiler
systems controls at fault
2.
Check that power is available at the
control panel and all switches are
closed.
3.
Manual reset on limit thermostat 3.
Reset and check also control stat
setting and operation.
4.
When using heavy oil tempertures
incorrect in oil piping or in burner
preheater
4.
Check temperatures: ensure prehe-
ating equipment is operating.
B.
Burner starts i.e. burner
motor runs but will not
light and burner goes to
‹lockout›.
1.
No ignition spark.
1.
Switch off burner. Check spark plug
gap. Check H.T. leads and connec-
tions. Check and clean ignition
electrode(s) and insulator
2.
No oil spray into combustion cham-
ber but pressure indicated on bur-
2.
Open door and check whether oil
has been sprayed into combustion
chamber; if no evidence of spray,
clean or replace burner nozzle(s).
3.
No oil spray into combustion cham-
ber and no pressure indicated on
the oil gauge.
3.
Check as above. If no spray, check
the following:
c. There is oil in the fuel tank.
d. All necessary valves are open.
e.
f. There is no airlock in the fuel
pump (listen for any unusual
sound from pump).
g. For air leakage into the fuel
feed pump.
h.
closed in oil line.
C.
Burner lights but rapidly
extinguishes.
1.
Dirty photocell (causing ‹lockout›
action).
1.
2.
Faulty photocell (causing ‘lock-out’
action).
2.
Replace cell with new.
