IGNITION FUNCTIONAL CHECK 2
NO SPARK
Ensure there is no debris around the pilot assembly,
(e.g. soot etc.) which could short the spark, clean the area.
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| instructions, retry. |
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From Ignition Fault | No | Is the valve being | Yes |
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Finding Chart 1 |
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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. soot etc.) Check for fluff in the pilot aeration hole. See diagram 5 in Replacing Parts, section 2.3.
Light the pilot and keep the control knob pushed in
at least 10 seconds before letting go.
20
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| electrode and |
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| thermocouple 4.0mm? |
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| Has ignition lead |
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| become detached or is |
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| Correct and retry. | ||||
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| connection poor? |
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| Check for defective or | ||||||
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| Remove the electrode lead |
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| damaged control knob spindle | ||||||||
Yes | from electrode with insulated |
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pliers. Hold the tip 3.5mm from the |
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| correct location of piezo | ||||||||
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With the pilot |
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| stay alight? | |||||||||||
running is the gas |
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pressure as stated on | No |
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the databadge? |
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| Problem is with the |
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| fittings which lead |
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| to the fire. Correct |
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| and retry. | No |
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Is the pilot flame of the |
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correct length? See |
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| connection good |
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diagram 5 in Replacing |
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| in back of valve? |
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Parts, section 2.3. |
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With the fire running
on full is the gas at the pressure stated on the databadge?
Yes
Run for 3 mins,
turn off, time interval until mag unit shuts with a click. Is this greater than 7 seconds?
No
Yes
pilot pipe work, is there a spark | components. Correct and retry. |
when the valve ‘clicks’? |
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Yes | Tighten the |
connection and retry.
SERVICING INSTRUCTIONS FAULT FINDING CHARTS
No
Is the electrode wire
detachable from the piezo
in the valve?
| Remove the electrode lead from |
Yes | the piezo. Operate the valve. |
| Does a spark jump from the |
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No
Replace ODS unit.
No
Replace the lead, retry.
piezo to the valve body? |
Yes |
Change the ODS unit.
Will pilot
stay alight?
No
Change mag
unit.
Yes
No
Run for 3 mins, turn off, time interval until mag unit shuts with a click. Is this greater than 7 seconds?
Yes
Replace the pilot unit. | Replace the electrode | |
lead and retry. | ||
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SYSTEM OK