Vaillant Boiler Repair | Vaillant Boiler Service | Bristol and Bath

Bristol 0117 9109813 | Bath 01225 220014 | Mobile 07968 246049

Do you need a Vaillant boiler repair or a boiler service? Has it stopped producing hot water?

We, at Core Heating, understand the urgency that situations like these can bring. That is why we have modelled our business so that we can respond quickly to your call. We can offer a same day response* to your boiler repair or we can arrange an appointment to suit your needs.

Not only can we respond the same day, but our heating engineer is a Vaillant boiler specialist. With over 20 years experience in repairs and servicing, we are proud to say that the majority of repairs are diagnosed within the first hour, which translates into cheaper costs for you.

* subject to availability

Why not call Core Heating today to see how we can help

Bristol 0117 9109813 | Bath 01225 220014 | Mobile 07968 246049


Vaillant Boiler Service

Vaillant Manufacturers highly recommend that your gas boiler is serviced every 12 months. In doing so, it will ensure that your appliance is working efficiently and safely within your home. When we are called in for a boiler service, we will ensure that your appliance is working according to all current regulations so that you can have peace of mind that your home and family are safe. It is important to note that to carry out a service, your boiler needs to be fully functional. However, if your boiler isn’t working, don’t worry, we are specialised in repairs too!

Please call us today for our current price structure. We look forward to hearing from you.

Vaillant Boiler Repair

So, your boiler isn’t working. Is it displaying a fault code? Here is a list of some of the common ones we come across:

F.00   Flow NTC – faulty connection
F.01   Return NTC – faulty connection
F.10   Flow NTC short circuit – faulty connection
F.11   Return NTC short circuit – faulty connection
F.13   Tank NTC short circuit – faulty connection
F.20   Safety temperature activated – faulty flow NTC
F.22   Dry fire – too little water in the appliance possibly due to a blocked pump
F.23   Lack of water pressure – pump output is too low due to faulty or blocked pump
F.24   Water shortage – Lack of water pressure
F.27   Incorrect sensing of flame – Faulty flame detector
F.28   Ignition failure – many causes regarding gas supply and ignition system
F.29   Flame goes out after ignition – gas supply, faulty earthing of the appliance
F.61   Faulty gas valve control
F.62   Delay in gas valve shutoff – Leaking gas valve
F.63   EEPROM error – Electronic fault
F.64   Electronic/NTC fault – short circuit in flow or return NTC
F.65   Electronic fault – temperature too high
F.67   Electronic fault – temperature too high
F.75   No pressure rise detected on pump start-up – Many causes
‘con’   Communication error between the Printed Circuit Board’s (PCB).

Boiler breakdowns always come at a bad time, so we will try our hardest to make sure your disruption is put to a minimum. You may have a fault code that isn’t displayed in the list above, don’t worry, we can still help you to sort it out. Why not give us a call to see how we can help… FAST!

Check out our testimonials…

Why not take a look at what our customers say on our testimonials page. After all, it’s not what we say that is important, rather it is what you as a customer say that is the most important.


We look forward to hearing from you!

CALL US ON 07968 246049