Certikin COH110, Operating, Installation And Servicing Instruction

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46 9-04-02
1. Suspect oil supply
2. Burner will not start
3. Burner Lights up
but locks out after
15 seconds.
10:3 FAULT FINDING CHART
No oil in tank
Supply valves closed
Blockage in oil
supply
(Gravity head feed)
Wrong grade of oil
Water contamination
Tank vent blocked
Filter blocked
Air locks in supply
pipe
Air lock in pump line.
Interruption or
absence of electrical
supply at burner.
(Check this at control
box mains terminal
with test lamp).
Control box is locked
out, refer to symptom
4
Photo-resistor receiv-
ing false light
Faulty control box
No oil supply.
Photo-electric cell
not receiving light
from flame.
Photo-electric cell
connections loose.
Control box photo-
electric cell circuit
faulty.
Flame instability.
Check and arrange for tank to be filled if neces-
sary.
Open all supply valves
Shut off the burner isolating valve. Disconnect the
oil supply at the pump entry. Place receptacle
under the pipe. Slowly open the valve, note if the
flow is unrestricted, restricted or blocked.
Check for correct grade of fuel (see technical data).
Open tank, drain valve and check.
Check.
Check for water or blockage.
Check for high points in main oil supply.
Bleed pump, check flexible oil
Check mains switch is on. Check fuses. Check that
time switch contacts are closed. Check that any aux-
iliary stat are closed. Check there is a demand light
on the Heater. Check there the Relay indicators are
lit on the Control Board.
Press reset button on the burner box.
Check that the photo-resistor is fully home in its
housing. Burner will not start with illuminated cell.
Replace.
Check oil in tank.
Check that Photo-electric cell is clean and
fullyhome in its housing.
Check and tighten as necessary.
Replace control box.
Check combustion setting out and reset if
necesssary.
Trouble or Complaint Possible Cause Action