Self diagnose your boiler faults.
Vaillant is one of the Most Popular Boiler Brands in the UK. Vaillant boilers are known for being reliable and high performing, dating back to 1874. Vaillant only have a hand-full of common faults.
The Vaillant F75 boiler fault. Do you have the F75 fault code displayed on your Vaillant boiler? You need to call our boiler repair engineer who will come and diagnose what is causing the F75 fault and will advice on what to do next.
The Vaillant F75 error is a fairly common fault code. When you see this fault code displayed on your Vaillant boiler it could be a number of potential causes. Continue reading..
| Vaillant Fault | Meaning | Possible Causes |
|---|---|---|
| F75 F.75 | Fault no pressure change | No Pressure: Sensor or pump failure, air in system (engineer required) |
The F75 fault is typically the most popular vaillant failure and the fault is either something very simple as air in the system or a more problematic cause, such as a failed pump or sensor.
The ecoTEC boilers are renowned for reliability but when a pump fails (part no. 178983) we advice that our boiler engineers come and replace as this isn’t something that can’t be done as a DIY.
A sensor blockage can cause a F75 fault which is caused either by the build-up of carbon deposits and debris in the filter system from the lack of boiler servicing or the system was not properly cleaned and treated when it was installed (cheap quotes tend to be the reason). The ecoTEC pressure sensor (Vaillant part no. 20059717) can become a problematic issue if you don’t choose to have your boiler serviced every year.
Pump failures on the Vaillant ecoTEC boilers (Vaillant part no. 178983) are again caused by the lack of maintenance. These pumps are called Grundfos which are much more reliable than the Wilo pumps which had a high failure rate.
Head Office:
THS Plumbing & Heating Northampton
3 Sunningdale Close
Northampton
NN2 7LR
Tel: 01604 212732
Open: Monday-Sunday 7:30am - 10:00pm
