Vaillant Boiler Clicking

[Paul17088071]

 

[Paul17088071]

 

[Paul17088071]

 

[CBW]

That looks like a combination tank for a combination cylinder. What about that black tank? If that’s inside the black tank, then that would suggest water is present. I’d be looking at a faulty zone valve or a link in pcb.

 

[Paul17088071]

Yep the tank is inside the tank. I’ll phone Vaillant tomorrow as the boiler is under warranty so hopefully they can come and sort it

I’ll report back on here what the problem was, thanks very much for your help and assistance

 

[OvertonPlumber]

Most likely the Pump is knackered, the myson/bg clone were cheap and nasty and failed regularly. The air vent was made of plastic!! Would explain the banging and crashing and the extremely high flow temperature. Change it for a dab evosta or a wilo pico 25/6.
Be warned if you get vaillant out and it is the pump they will charge you £160. Their warranty covers the boiler only.

 

[Paul17088071]

Thanks for this response.

I’ve taken the gamble, it’s a £90 fee if they come out and the boiler isn’t the issue. If it isn’t, I’ll rack their brains and at least find out the issue!

Many thanks

 

[Paul17088071]

I have an error code on the boiler of F.83 at the moment, came on yesterday. Roll on tomorrow!

 

[Gasguru]

It thinks it's overheating...check the pump.
What are Vaillants terms is no fault is found on the boiler?

 

[Paul17088071]

Then I have to pay £90, steep isn’t it! I’ll get the most out of paying that even if it isn’t the boiler problem.

 

[Paul17088071]

So the engineer has been, the problem is with the wiring when installer. There is a permanent live on the boiler when it should be set up to a switch live, so at the moment when there is no demand, the display still shows up when it shouldn’t do.

Looks like a sum of money to Vaillant and an electrician call out!

 

[CBW]

So the engineer has been, the problem is with the wiring when installer. There is a permanent live on the boiler when it should be set up to a switch live, so at the moment when there is no demand, the display still shows up when it shouldn’t do.

Looks like a sum of money to Vaillant and an electrician call out!

Similar to leaving the link in on the 24v side, could he not have done this when there, or is it on the thermostat?

 

[Paul17088071]

He said he isn’t allowed to get involved with it as it’s outside the boiler. Sorry to be a pain, what is the 24v side?

so I’m hoping the valves and pump don’t need replacing

 

[ianmcd]

Sorry to be a pain, what is the 24v side?

Depending on your choice of external controls for your boiler, there is a coice to switch theboiler on /off using 230V AC, which as you have zone valves is the best set up for your system, but if the boiler was installed with different controls there is also an option to use 24Vdc switching, the boiler comes with a link fitted to the 24V terminals and this has to be removed when using the 230V controls, but the Vaillant lad would have checked this, if you can get the front unit off the hive receiver and post a pic of the wiring so we can see what has been done, my money is on a zone valve end switch sticking though

 

[Paul17088071]

Thank you for clarifying! Ah interesting, it must be that then! I can’t access the screws at the bottom, as you’ll see here, no space at all!