HVAC Questions? Ask an HVAC Expert for Answers ASAP
Good evening, and welcome to the Technical section in JustAnswer, an independent paid question and answer platform that matches customers' questions to experts in various skills. My name is ***** ***** I'll be happy to help you today.If you think the problem is the PCB then almost certainly your best option is to use the Vaillant fixed price repair service.If the pressure is increasing when the boiler is off then the filling valves are not shut properly. The PCB doesn't control the system pressure.To book a fixed price repair, visit the following web page and click the link below "Book a fixed price repair":https://www.vaillant.co.uk/homeowners/repairs-servicing/repair-options/_____There's no time pressure on this topic - it will stay open to you for many days, and you can reply at any time. I will be away from my desk sometimes, but will respond as soon as I can.
You're welcome. I hope you can book them for a visit soon.