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Plumbing

Vaillant Exclusive 835 keeps firing up

Anonymous user 23/02/2024 - 3.43 PM

Hello, I've just had the Vaillant Exclusive Green Iq 835 boiler installed and it keeps firing up even after the desired temperature has been reached. I switched off the comfort mode for HW so it doesnt fire up, then decided to then the heating on - set the thermostat to 21C desired temperature, all good reaching that temperature, the boiler turned off for a few minutes. It then appears to switch back on after a few minutes and starts working again. It is now 23 degrees in the room but it's still working. I have contacted the installer and will get in touch with Vaillant for support, but thought I'd ask here too in case anybody could point me in the right direction whilst I'm waiting. Thank you and Best regards, Julia

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4 Answers

Anonymous user

I will suggest you check if the installer didn't set the boiler on timer. If the boiler is on timer it will come on. You can keep the boiler on manual mode until the installer visit you.

Answered12 October 2021

Anonymous user

These boilers used to be supplied with a link in the central heating control (on the circuit board). I'd check with the installer that they removed the link and that your thermostat is wired correctly.

Answered22 October 2021

Flame sure ltd

Rating: 5 out of 5

Hook

I would get the installer to check he has removed the bridges from the pcb. Depending on what controls are used ie 24v 230v ebus. Determine which links need to be removed ( can be found in installation manual). Else boiler will run 24/7. If manufacturers attend you will likely be charged if its an installer error.

Answered24 October 2021

Anonymous user

This is not a plumbing problem You need a gas service engineer. Contact your installer or valiant Good luck

Answered28 October 2021