Recent content by mchmav

I tracked our issue to a sticking relay on the main pcb. Ordered a new one off eBay for £85 fitted it myself and it's been fine ever since. Has your main pcb been changed already?

Vaillantstumped - did you get to the bottom of what your issue was. I have an Ecomax Pro 28e exhibiting the exact same behaviour. The only way I can clear the F13 fault in the morning (boiler is in the loft so it's much colder) is to gently tap the area where the main circuit board is. Does...