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Baxi Combi Instant HE80 boiler?

Intermittent fault on the hot water. Sometimes it comes on but when it doesn't I can sometimes get it on by turning on another hot tap which fires up the boiler. No problem with the central heating. I've had a new diverter valve and new circuit board(?) but still have the problem.

Pat Mannakee
September 2017
Possibly the demand valve, which senses when hot water is needed.

September 2017

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