USA potterton suprima help needed, not the ususal problem.

[mcaw]

Hi all.

I have Potterton Suprimal 100l. It had a new PCB fitted around 3 yrs ago to fix reset problem.
It has now started playing up in a different way.
In the morning boiler will not fire up. It flashes amber and clicks and just repeats this.
Fan does not run and boiler doesn't fire up at all.( call for heat is there )
I have to turn the temp knob off, and then on again, and if it flashes green immediately turn it off again. ( strange I know )
The boiler then goes through the ignition sequence and fires up, and I can turn the knob on and around to high temp.
I may have to do this a few times, before I can finally get the boiler to fire up. ( this happens every morning and during the day )
Anybody any ideas ? is it time for anothe new PCB ?

Thanks

Martin

 

[SafeGasInstall]

call a gas engineer Martin

 

[Barry98]

1. 
   [*=left]This plumbing forum will not provide advice to anybody with regards to boiler repairs or any other form of gas plumbing without you first providing us with your Gas Safe Registration number in a thread - for very obvious reasons. If you're not qualified to touch gas, you should stay well clear of trying to!
   [*=left]