How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Andrew Smith Your Own Question
Andrew Smith
Andrew Smith, Engineer
Category: UK Plumbing
Satisfied Customers: 3633
Experience:  Domestic Gas, Commercial Gas, LPG, Unvented Hot Water, Part P Electrical, Commercial Catering
Type Your UK Plumbing Question Here...
Andrew Smith is online now
A new question is answered every 9 seconds

Have a Vokera 12e boiler. Recent problems on starting was a

Customer Question

Hi Mike.
Have a Vokera 12e boiler. Recent problems on starting was a sort of clicking/ crackling sound, as though a relay was sticking/ jamming. Although not a boiler expert, I had a look at it, followed fault finding flowchart as best I could, fiddled about & got it firing up.This continued for a while, though the boiler would eventually fire up.
Inevitably it ceased to fire up at all but was left over the recent warmer months. Have come to check it again, found the 2a internal fuse blown and replaced it. However it keeps blowing the fuse when calling for it to fire up. Think it may need a new circuit board, any ideas ? - Mick
Submitted: 2 years ago.
Category: UK Plumbing
Expert:  Andrew Smith replied 2 years ago.

There are only a couple of things that can blow the fuse by creating a short.

One is a trapped wire, one will be the fan and other will be the pump if you have the system model.

Customer: replied 2 years ago.
Hi Andrew,
Is that a trapped wire for the pump or fan,/ or a trapped wire somewhere or pump problem or fan problem?
Expert:  Andrew Smith replied 2 years ago.

It could a trapped wire anywhere to create a short, or a pump/fan fault