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I have a Baxi Genesis 96 Boiler. Last week it tried to fire up when the hot water was turned on, but kept cutting out after a very short time. After opening it up I cleared it of water which had gathered in the tray under the elements. After a few more attempts of requesting water and it firing (puffing air sound) it got working and has been ok for a week. Today, it failed to fire up on turning on the hot water. It is now working, again after several attempts at cleaning/requesting water. Could it be a thermostat and if so where.

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6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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  • 30 Answers

SOURCE: re: combi boiler.

if you have hot water at the taps but the heating isn't working make sure the thermostat is set high enough for the boiler to run check the time clock settings are on.
if these are working it could be a faulty diverter valve switch not sending a signal to the boiler to run.

Posted on Mar 30, 2009

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SOURCE: No heating and no hot water, my boiler won't fire up

If there is a hi-limit switch, maybe it's open, reset the switch, and monitor the temperature, if the temp. increases over the set temp. replace stat, and clean lime off from the tank, if does not have a filtering system

Posted on Apr 21, 2009

  • 5 Answers

SOURCE: I have an Alpha CB28

try tapping the 3 relays on the pcb,"thats the circuit board under the front cover...
it sounds like a dodgy relay thats starts up the pressure fan in next to the flue....
maybe a dry solder joint,maybe a new relay needed....
its a common fault on this model..

Posted on Aug 02, 2009

  • 248 Answers

SOURCE: Manual for Baxi Boiler

any merchant will get one mailed out to you

Posted on Nov 06, 2009

  • 2 Answers

SOURCE: Baxi solo 3 70pf boiler problem

This happened to me and it was a rubber pipe inside had perished so it was detecting a loss of pressure. You can see it if you take the main cover off and also the front clipped on cover. Its at the top on the right. You need to replace it with heatproof pipe. Good luck!

Posted on Jan 05, 2010

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2 Answers

My Baxi Combi 80e boiler turns the heating on randomly. With the wall thermostat turned down and even with the boil switched to hot water only the heating still fires up when unwanted.


If the thermostat wire run passes anywhere through, beside or inside any metal surfaces and the wires touch any of the metal its the same as if you turn the stat to on. I've seen this a few times. Easiet way to detect it, if its inside the house is at night in the dark. Look around when its doing this you may see the small spark when it goes on. Otherwise you will need to inspect the entire run from the stat to the untis, etc.

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I am wanting to wire a Baxi 105E boiler to a Danfoss 102 mechanical timer. The boiler has 5 wires = red, blue, earth, black and yellow. The Timer has six terminals = 1 DHW, 2 HTG, 3 COM, I (earth), 5...


1) Contact baxi:
http://www.baxi.co.uk/contact.htm

2) Which boiler wires? I don't know. Page 24 manual.
Manual says to disconnect link between terminals 1 and 2, and instert timer in-line.
http://www.acwilgar.co.uk/Boiler-Manual-PDF/Baxi/Combi%20instant%2080E%20&%20105E.pdf

2) I can tell you about the timer wiring.
Timer is 230Volts
Not sure if you have British Hot-Neutral 230Volt, or Hot-Hot 230Volt.
Wiring is same 2 wires, but words to describe are different.
Let's say you have Hot-Neutral 230V
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Now the timer terminals are separate.
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The Common is Hot wire.
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Timer has 2 sets contacts.

When timer activates first set of contacts, then DHW defrost terminal receives power from Hot wire on Com terminal. At this time, all power is cut to HTG heating terminal.

When the defrost cycle ends, then the heating circuit receives power, and then the timer has programming that opens and closes a second set of contacts going to HTG heating terminal.

Which wires from boiler connect to each terminal, I am not sure.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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contact baxi and ask ther service people there was aproblem with this but i cannot recall it now ,hopethis helps

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Do you will initially get a liitle hot water if your heating is on?

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