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Vaillant ecoTEC Pro 28 faulty printed circuit board

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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.

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Vaillant ecoTEC PRO 28 leaking diverter valve repair

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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.

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Vaillant ecoTEC PRO 28 service

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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

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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.

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