Vaillant ecoTEC Pro 28 faulty printed circuit board

This was a much needed repair of a second generation Vaillant ecoTEC Pro 28 Combination boiler, in Hillsborough, Sheffield, S6.

The boiler in this case would attempt to fire up and then go to a blank screen for a period. With these boilers and the older glowworms, if the screen is blank then you typically disconnect all the connections from the board and se if the display lights up.

Vaillant ecoTEC PRO 28 leaking diverter valve repair

Vaillant ecoTEC PRO 28 leaking diverter valve repair – Thurgoland, Sheffield, S35.

This was just supposed to be a standard service on a boiler which I serviced a couple of years prior. When I was checking the boiler over I noticed that the diverter valve was leaking slightly when it was moving between domestic hot water and central heating mode.

Vaillant ecoTEC PRO 28 service

Today I serviced a second generation Vaillant ecoTEC PRO 28 combi boiler in Ecclesfield, Sheffield, S5.

I have been servicing this boiler for the last four years or so and it has continued to work reliably since it was fitted.

Vaillant ecoTEC PLUS 418 service

This was a standard annual service of a Vaillant ecoTEC PLUS heat-only boiler in Ecclesfield, Sheffield S5, done in August 2018.

I started looking after this boiler back in 2015 a year after it had been installed.

This customer has had me back each year for its annual service. So far it has been a reliable boiler with no issues.