Stovax 8545LUC, P8545LUC manual Flame Failure Functional Check, Ignition Functional Check

FLAME FAILURE FUNCTIONAL CHECK 3

PILOT WILL NOT STAY LIT OR FIRE GOES OUT IN USE

Ensure there is no debris around the pilot assembly, (e.g. coal, soot

etc.) which could short the spark, clear the area.

Light the pilot and keep the control knob pushed in at least 10

seconds before letting go.

IGNITION FUNCTIONAL CHECK 2

NO SPARK

Ensure there is no debris around the pilot assembly, (e.g. coal, soot

etc.) which could short the spark, clear the area.

From Ignition Fault Finding	Consult the Users Instructions,
Chart Part 1.	retry.

21

		NO		YES	With the fire
With the pilot			Will the pilot stay
					running on full, is
			lit?
running, is the gas
					the gas at the
pressure stated on		NO		NO
					pressure stated on
			Problem is with the
the databadge?			pipework or fittings		the databadge?
			which lead to the
					YES
			fire. Correct and
	YES		retry.		Run for no more
					than 60 seconds,
					turn off, time	YES
					interval until mag
Is the pilot flame of			Is thermocouple	NO
the correct length?			connection good in		unit shuts with a
See diagram 1 on					click. Is this greater
			back of valve?
page	19.				than 7 seconds?
			YES		NO
			Replace the		Tighten the
NO					connection and
			thermocouple.
					retry.
					Run for 60 seconds,

Operate the valve to light the pilot, does the valve ‘click’?

YES

Is the pilot burner horizontal? See diagram 1 on page 20.

YES

Has ignition lead become detached or is connection poor?

NO

Remove the electrode lead

from electrode with insulated YES pliers. Hold the tip 4mm from

the pilot pipework, is there a spark when the valve ‘clicks’?

NO

NO

NO

YES

Is the valve being operated	YES
properly?
Reset the electrode gap, retry.
Correct and retry.
Check the defective or
damaged control knob spindle
or cam operation. Check for
correct location of piezo
components. Correct and
retry.

			YES
Change the pilot	Will pilot stay alight?			turn off, time
unit.
				interval until mag
		NO
				unit shuts with a
			NO	click. Is this greater
	Change mag unit.			than 7 seconds?

YES

SYSTEM OK

Is the electrode wire detached from the piezo in the valve?

NO

Replace the combined lead,

retry.

Replace the pilot unit.

YES

Remove the electrode lead from the piezo. Operate the valve. Does a spark jump from the piezo to the valve body?

YES

Replace the electrode lead

and retry.