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Andrew Smith
Andrew Smith, Home Appliance Technician
Category: Appliance
Satisfied Customers: 3756
Experience:  Gas cooker specialist
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Was asked to look at a Ferroli Maxima 35c today and found a

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Hi was asked to look at a Ferroli Maxima 35c today and found a coupkle of puzzling things
1 as soon as the boiler is switched on the electrode sparks ( even when there is no demand).
2 when demand is created the boiler ignites for about 5 seconds then goes out.
this happens a couple of times before locking out, showing fault code F26 one time then F1 the next time
Any thoughts?

Is the fan running at this time?

It sounds like a relay on the PCB is stuck

Customer: replied 1 year ago.
no fan only runs on start up or when demand for heating/hot water occurs

Ok, definitely sounds like the PCB then.

Customer: replied 1 year ago.
Don't think its the PCB would think it would be more on the full auto control box?

A link to the manual;

F1 is flame failure

F26 is flame after boiler has shut down.

The whole ignition sequence is controlled by the PCB - what is the auto control box you are referring to?

Customer: replied 1 year ago.
both faults refer to there being no flame but the boiler does ignite.
the full auto box is the ignition control box bolted to the bottom of the gas valve from which the ht lead and the flame detection lead comes from

Ok, I see it page 31.

Some other boilers have this - like a Honeywell ignition control box.

This box controls the ignition of the boiler but not the fan or APS so if this was faulty it would fire without the fan having to run.

Have you swapped this out at all?

Customer: replied 1 year ago.
no was hoping to get some confirmation that this is the problem before i buy one

i can only guide you on here, normally I would say check power to the ignitor, but it is on the same PCB and pulling the power plug off will simply stop it working.

The ignition is controlled by this PCB only, perhaps you check local providers for a price and take it from there?

Andrew Smith and other Appliance Specialists are ready to help you
Customer: replied 1 year ago.
Yeah prices start at £260 so was looking for a bit more of a heads up.
Cheers anyway.