Any Saunier Duval gurus on here?

[Masood]

Got a Thema F23E doing an odd thing.

It'll run for about 30 secs, then flame will drop out and instantly relight. Over and over for as long as there's a demand - CH or DHW, does the same.

When it cuts out it shows the "air fault" LED, then the "gas fault" LED. The flue is clear, fan is strong, no problem with gas supply.

Any ideas?

 

[hammers4spanner]

Mate i had one like this on one of these few weeks ago intermittent flame told cust in end to bin it , was a pain in the arris.

 

[lame plumber]

thermistor failing ? remember they are gloworms in disguise

 

[Masood]

Mate i had one like this on one of these few weeks ago intermittent flame told cust in end to bin it , was a pain in the arris.

Not an option unfortunately, she's not got a pot to pee in...

 

[Masood]

thermistor failing ? remember they are gloworms in disguise

I did wonder - it's "reaching temp" falsely. But the LEDs were baffling me...

 

[mikeygas]

Has it got a Venturi? If so is this clean?