Navigation Menu










Boiler fault and error code information for the Vaillant Ecomax PRO 18.28E

Are you experiencing a fault with your boiler? Mr Boiler Repairs is the UK’s leading boiler repair and service specialist, providing support for domestic, commercial and residential properties. Our low cost fixed price repair service will provide you with peace of mind and avoid any scary repair bills.

Are you experiencing a fault code with your Ecomax PRO 18.28E boiler? Below you’ll find information on the fault codes for your boiler and the possible reasons for the fault you are experiencing.

Fault codes for the Ecomax PRO 18.28E boiler

F1        No gas, ignition fault, gas valve adjustment, electrode lead defective, Possible flue fault

F4        Ignition fault when lit, check as above

F5        Overheat fault, overheat stat oprtated

F6        Flow NTC fault

F16      Gas valve fault

F17      Check polarity 

F24      System fault, possible failed pump, pump over-run, or air lock

If you need a Gas Safe service engineer to repair your boiler then book a boiler repair today.


Vaillant Boiler Manuals / Instructions

Download a copy from our library, if your boiler is not listed Contact us and we will do our best to help you.












Contact Us for a Quote Now











Book Your Boiler Repair Now











Book your Boiler Service Now