In message , Jerry.
writes
I seem to have a LED 'fault code' showing that is not one of the usual ones,
the boiler is a Suprima 30 and the following happens

The boiler stops, gas valve shuts off, pump stops, both LED's go out,
although as all this happens the green LED flashes at about 10Hz three
times.

Reset button has no effect - the only way to recover is to isolate at the
main electrical feed (DP switch), switch off both HW and CH on the timer,
return the boiler stat to the 0ff / Stand By state.

On restoring the power supply one of two things happen, either the green LED
will flash at about 10Hz three times and thus we are back to isolating the
electrical supply again or the boiler will behave normally until the next
time this fault happens.


Sorry, I don't know offhand, it's definitely not a common fault. Is it
sparking when the green LED flashes at 10 Hz?

All I can offer is if you send it to me at www.cetltd.com I'll put it on
a test set and have a look
--
geoff