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 10.
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.
26
NO | Operate the valve. | YES | 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 |
|
|
| electrode and thermocouple | YES | 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 fire? |
|
|
| 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
Remove the electrode lead
from electrode with YES 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 |