supply switched on?
Is the programmer (or Boiler Operating Switch) set to call for heat? Is the Boiler Thermostat set to the desired
temperature?
Is the Lock-out Reset Button on the Control Box and Control Panel neon illuminated? If so, press to reset
Burner. Check the fuse which should have been fitted to the mains electricity supply to the programmer/boiler
operating switch. If the fuse has blown, replace it. If it blows again, call a Service Engineer.
IMPORTANT - Electrical Safety
IT IS ESSENTIAL THAT BEFORE ANY PANELS OR COMPONENTS ARE REMOVED FROM THE
BOILER, THAT THE MAINS ISOLATOR IS SWITCHED OFF
10:2 FAULT FINDING CHART
Trouble or Complaint
Possible Cause
Action
1
Suspect oil supply.
No oil in tank.
Check and arrange for tank to be filled if
necessary.
Supply valves closed
Open all supply valves.
Blockage in oil supply
(Gravity head feed).
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.
Wrong grade of oil.
Check for correct grade of fuel
(see technical
data).
Water contamination.
Open tank, drain valve and check.
Tank vent blocked.
Check.
Filter blocked.
Check or water or blockage.
Air locks in supply pipe
supply.
Check for high points in main oil.
Air lock in pump.
Bleed pump, check flexible oil line.
2
Burner will not start.
Interruption or absence of
electrical supply at burner
(check this at Control Box
mains terminal with test
lamp).
Check mains switch on. Check fuse in
switched spur or plug. Check that time
switch or programmer is closed. Check that
the auxiliary stat is closed. Check boiler stat,
cylinder stat, room stat are calling for heat.
Control Box is locked out,
refer to symptom 4
Press reset button on the burner box.
Photo-resistor receiving false
light.
Check that the photo-resistor is fully home in
it's housing. Burner will not start with
illuminated cell.
Faulty control box.
Replace.
3
Burner lights up but locks
out after 15 seconds.
No oil supply.
Check oil in the tank.
Photo-electric cell not
receiving light from flame.
Check that photo-electric cell is clean and
fully home in housing.
Photo-electric cell
connections loose.
Check and tighten if necessary.
Control Box photo - electric
cell circuit faulty.
Replace control box.
Page 49 of 57
Installation & maintenance manual for Camray 5 Combi External Boilers
14/04/2005
file://D:\PL61500\PL61500.htm
