BAXI 105HE No hot water

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Hi.

The hot water has gone off. The heating is working. I have seen that the pin is not pushing out on the front of the diverted valve to make the switch for the burner to ignite.
When I manually press the switch the water gets Luke warm at best.
I changed the diaphragm about 2 months ago as it was split. I have checked it this time and it looks ok.

Any help will be great.

Thanks

 

[picasso]

Its probably the venturi that's disintegrated.

 

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Thanks for the reply. I’ll give it a try

 

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Is this the part I need?

Thanks.

 

[picasso]

Yes that's it.

 

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Thanks

 

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I have just noticed the heating gets hot when not selected. I have had the hot tap running and the micro switch pressed in by hand.

 

[CBW]

Could be a diverter issue then as it’s not flowing around the hot water circuit.

 

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Thanks. I have a couple of parts on order. If no good I will get a new diverted valve.

 

[picasso]

The diaphragm has to move (pin activates microswitch) for the diverter valve to open for hot water.

 

[gas112]

with just the switch activated manually without the pin coming out then the rads will get hot as the divertor is still in heating position.
if it not a genuine baxi diaphragm cheap ones slit after few months if it is a cheapo double check it for a split

 

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I have a new diaphragm kit coming. Thanks

 

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New diaphragm fitted tonight and burner lit ok with hot water. After a short while the burner went off even though hot tap was still on. Pin still making the micro switch. Now diaphragm seems to be working but burner won’t light at all. Heating side works fine.

 

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I have tried operating the micro switch by hand and the burner won’t ignite.

 

[gas112]

I have tried operating the micro switch by hand and the burner won’t ignite.

check you havent pulled the ignition wire off it runs up beside diaphragm housing
Is it just the flame failure neon flashing (first one)