HVAC Questions? Ask an HVAC Expert for Answers ASAP
Good evening, and welcome to the Technical section in JustAnswer. My name is ***** ***** I will help you today. 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.What was the pressure before you increased it?
Do the boilers share a fuel tank/supply?
It does seem like a coincidence that the boiler failed just after the service, but coincidences happen.Is there a backup immersion heater so that you give your guests hot water?
Do you think the boiler was working when the engineer left it?
Even the best people make mistakes. It's worth checking all electrical connections, but unless you're really going to get down and dirty with the burner assembly to check the basic there's nothing that leaps out from your description of the symptoms.If the system is using a 3-port motorised valve then it could possibly be a fault with that.
Thank you for your rating :-)