Error LED showing on Vizo 24 boiler

31 Aug 2009
Reaction score
United Kingdom

I've got a Vizo 24 combi-boiler. About 2 weeks ago, the hot water stopped because the pressure was low and I refilled it to about 1.5 bar. Everything worked well until recently when the water started going luke warm. I've set the dial on the boiler to maximum heat and the pressure is still at 1.5. There's a flashing error LED which apparently means there's a problem with the DHW sensor. When I turn the hot tap on, the boiler fires and starts producing the lukewarm water.

Any ideas on what I should do? Should I just get an engineer in?

Thanks for your help.

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need a new DHW sensor, it is a simple repair and should take no more then 15 mins if the repair guy has the part in his hand.

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