“If you think it’s expensive to hire a professional to do the job, wait until you hire an amateur” Red Adair

Mark Ray;

Ex-Vaillant Service Engineer

Repairs & Breakdowns

Annual Servicing


Landlord & Tenants

Call 07515-687740  9am-4.30pm

Mon -Fri 8am-9pm (Sat 9am - 1pm)

Need support?

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Internal connections made with rubber hoses and clips!

Hoses split, causing untold damage in some cases..

Modification kit available, yippee! pity it’s £100.00 or more!

Faulty pressure sensor:

Now modified part available

Combustion seals leaking, causing high temperatures inside boiler, and damaging components.

Good news.. Appliances should have been re-called, and fitted with new seals. FREE by Vaillant.


Now modified part available


Has to be fitted with modified PRV, or you’ll get very wet!

Leaking Diverter Valves:

Has to be replaced, sorry!

Expansion Vessel:

Don’t know why, but these vessels are always empty, every time I see one?

Main Heat Exchanger:

Real problems with noise, and

blocking up. The heating system needs to be absolutely pristine.

Best advice, fit a filter on the return, as soon as possible.


It is a criminal offence to work on a gas appliance if you are not qualified, and licensed to do so.

ALWAYS consult the manufacturers user instructions for guidance. The instructions above are for guidance only. If unsure of any procedures, call a boiler specialist, who holds the relevant qualifications, and GAS Safe Registration.

Vaillant Ecotec Boiler Faults:

The vaillant Ecotec range has had it’s fair share of problems. Here are some that me be common to your boiler.

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