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Plumbing & Plumbers Forum - Baxi Eco80 wont fire CH unless i turn on DHW tap
Baxi Eco80 wont fire CH unless i turn on DHW tapDiscuss Baxi Eco80 wont fire CH unless i turn on DHW tap at UK Plumbers Forums; I have an interesting problem with Baxi Eco80 boiler which i inherited when i moved into my flat a few month ago. At first i thought it was the thermostat ...
- 15-12-2016 #1
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- Dec 2016
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Baxi Eco80 wont fire CH unless i turn on DHW tap
I have an interesting problem with Baxi Eco80 boiler which i inherited when i moved into my flat a few month ago.
At first i thought it was the thermostat so i recently replaced it with a 3rd Gen Nest. However its evidently not the thermostat.
Problem occurs when the boiler has been idle for a long time i.e both CH and DHW have not been running.
When the thermostat kicks in, i can hear the pump running but no flame ignition. The problem seems to be resolved only by turning on a hot water tap after which the flame ignition sequence seems to work just fine and the CH system fires up.
Once the system is running it seems to be able turn off and on (as demanded by the thermostat) however if left off for too long the same problem occurs.
I have checked the system pressure is set correctly to 1.5 barg,
Ay idea what the problem could be?
location GU15 postcode
Last edited by rizz077; 15-12-2016 at 09:48 PM. Reason: Additiona info
- 15-12-2016 #2
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- Nov 2010
- Locks Heath fareham
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Re: Baxi Eco80 wont fire CH unless i turn on DHW tap
If interested please pm the op directly.
Last edited by APPlumbing; 15-12-2016 at 10:01 PM.Behind every great man is a woman rolling her eyes.
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