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I have a Baxi 80E combi instant and i am experiencing problems with the hot water function. For last week or so when operating hot tap the water has initially run hot then keeps going cold and will come back on when tap is opened fully. The hot water has now stopped working completely even if opened fully and the hot water light on unit does not illuminate as it used to. I was advised by a friend to try changing the DHW flow microswitch on the diverter valve and have also changed the diaphragm as a precaution but i am still unable to get hot water. Could you recomend what my next course of action may be?

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  • Heating & Co... Master
  • 2,461 Answers

Sounds like the diverter valve is stuck

Posted on Apr 14, 2017

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Posted on Jan 02, 2017

SOURCE: baxi combi boiler 80e safty thermostat light on

baxi boiler relief valve blows off when heat is turned on when hot water is working it is fine

Posted on Nov 02, 2008

  • 16 Answers

SOURCE: Heating circuit getting hot when hot water is running

Check to see if diverter valve is in domestic mode or heating mode.

Posted on Jul 10, 2009

mrhotandcold
  • 248 Answers

SOURCE: no hot water...can any1 help i have a baxi combi 80e

check daiphragm, or micro switch best of luck

Posted on Oct 12, 2009

  • 1 Answer

SOURCE: water gets hot then turns cold and runs cold then hot again

Secondary heat exchanger is blocked on sealed system side.
Remove and de-scale heat exchanger or fit new one.

Posted on Jan 14, 2010

  • 6 Answers

SOURCE: just changed my bathtub/shower valves water flow changes

Try to make sure there is no obstruction in the manifold (housing).

Posted on Sep 19, 2010

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