BENSON JETSTREME 4+ - Fault Finding; Burner Fails to Start; Burner goes to Lockout

FAULT FINDING
Burner Fails to Start
If the burner has failed to operate check the following:-
1. Ensure that the mains supply switch is ON.
2. The thermostats are turned to the required setting. For test purposes only, turn the thermostats
to their
maximum setting. But remember to reset them later.
3. Is the Timer/Programmer set to an On period?
4. Check that the Reset Button on the burner control box is not illuminated.
5. Check that the Limit Thermostat on the underside of the facia is fully in.
6. Again start the ignition procedure.
Burner goes to Lockout
1. Remove the lower front panel.
2. On the burner control box a glowing red button will be noticed. This is the Lockout Reset
Button.
3. Turn the boiler thermostat to the OFF position.
4. Press the Lockout Reset Button fully home.
5. Release the Lockout Reset Button. The light will go out and should remain so.
6. Turn the boiler thermostat to the required setting. The ignition cycle should then automatically
commence.
If the appliance is still failing, check the following:-
a. Oil
supply - Ensure that there is an adequate supply of oil in the Tank.
That the
supply valves have not been turned off.
That the fire check valve has
not operated.
Was
the storage tank allowed to run dry before being refilled thereby
creating air in the supply pipe.
Check fuel
grade to match burner is correct.
Check for correct oil pressure (See Technical Specification).
b. Air lock
If a one pipe system, Bleed supply pipe at the boiler.
If a two pipe system continue to rectify lockout until air lock is cleared.
c. Blocked Nozzle Clean or replace with new nozzle as per the manufacturer's instructions.
(See Burner Manual).
d.
No Spark Check spark gap. (See Burner Manual).
Check Burner Control Box Spark output. (See Burner Manual). Replace as
necessary.
22