Search results

I have the manual - it just says follow the instructions provided by your installer. I was hoping not to have to call him out if possible. Thanks

I have a Vaillant Ecomax boiler and it's showing F25 - which I think is the low pressure error message. However, I don't know how to top it up - I know there is a valve under the boiler, but when I had a look, I didn't know what to do. Can anyone help? Thanks OW