IGNITION FUNCTIONAL CHECK 1

PILOT WILL NOT LIGHT

Ensure there is no debris around the pilot assembly, e.g. coal, soot, etc which could short the spark, clean the area. Check for fluff in the pilot aeration hole. See diagram 7.

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, clean the area.

19

NO

YES

 

Operate the valve.

Does the pilot light?

Is there a spark?

 

 

 

 

 

NO

Consult users book

NO

Is the control being

and retry

 

operated correctly?

 

 

YES

Ensure gap between the

YES

 

electrode and thermocouple

Will the pilot light

is as Dia. 8 and retry.

 

 

with a match?

If gap is O.K then first

 

 

 

change the ignition lead and

 

 

retry.

 

NO

 

 

Check isolation tap

NO

Is the gas turned on to

 

and gas meter, retry.

 

the appliance?

 

 

YES

Correct and retry.

NO

Is the gas pressure

 

 

correct?

 

 

 

 

YES

Purge the gas pipes

YES

Has the system got

 

and retry

 

any air in it?

 

 

NO

There is a blockage in the system, check the inlet test point, the mag

seating, valve and pilot filter

 

YES

*

 

Operate the valve to

 

light the pilot, does the

 

 

 

 

valve ‘click’?

 

 

 

 

 

 

 

YES

 

 

 

 

Is the gap between electrode

and thermocouple

as in Dia 7?

YES

Has ignition lead become detached or is connection poor?

 

NO

YES

Remove the electrode lead

from electrode with

 

 

insulated pliers hold the tip

 

3.5mm from the pilot

 

pipework,is there a spark

 

when the valve ‘clicks’?

 

NO

 

Is the electrode wire

 

detached from the piezo

 

valve?

NO

NO

YES

YES

Consult users

instructions, retry

Is the valve being operated correctly?

Reset the pilot

burner

Correct and retry

Check for defective or damaged control knob spindle or cam operation. Check for the correct location of piezo components. Correct and retry.

Remove the electrode lead from the piezo. Operate

the valve. Does a spark jump from the piezo to the valve body?

YES

SERVICING INSTRUCTIONS FAULT FINDING CHARTS

 

 

System O.K

See “No Spark”

 

Chart *

 

 

 

 

 

Replace the ODA unit

Replace the electrode

 

Replace the

lead and retry

 

control valve

 

 

 

Page 19
Image 19
Stovax PR0696 manual Servicing Instructions Fault Finding Charts