BAXI 105E Boiler Noisy Pump

[gas112]

Just taken a photo of the diverter valve.
Just to clarify - the boiler is quiet when the central heating is initially turned on.
If the hot tap/shower is run, the boiler gets noisy when they're turned off and the central heating is still on.
Hope that makes sense.
Andy

the O rings in the divertor can cause a high pitched whinning noise i would be changing the innards of diverter or giving everything a clean and a smearing of silicone grease

 

[AndyJay2019]

Thanks gas112
I have fitted the diaphragm repair kit on a couple of occassions ovr the years so I'll take a look at that next.
Cheers
Andy

 

[gas112]

Thanks gas112
I have fitted the diaphragm repair kit on a couple of occassions ovr the years so I'll take a look at that next.
Cheers
Andy

The bit behind, once you take complete diaphragm housing off

 

[AndyJay2019]

Got ya

 

[DP]

The bit behind, once you take complete diaphragm housing off

That area hardly ever gets serviced. Would not be surprised if it is seized up

Each time the hw demand switch operates, boiler starts making noise. Wonder if there is glow through the PHEX or lack of causing the bypass to open.

Andy, the noise would be loudest on the left brass section at the rear. Listened to the noise a few times. Should have asked what is the hot water like when tap fully open

 

[davidha1]

Hello,
Did this get resolved? I have the same problem. My initial thoughts were the pump as it sounds like a small bearing whining and only starts when the heating has been on for around 30 minutes and goes off when you run the tap.
It is a BAXI 105 HE. New diverter valve around 3-4 months ago and been fine up until now.
Any help appreciated.
Thanks
David

 

[ianmcd]

Hello,
Did this get resolved? I have the same problem. My initial thoughts were the pump as it sounds like a small bearing whining and only starts when the heating has been on for around 30 minutes and goes off when you run the tap.
It is a BAXI 105 HE. New diverter valve around 3-4 months ago and been fine up until now.
Any help appreciated.
Thanks
David

Hi David
It is against site rules to hi-Jack posts , because it just gets so confusing when reading different faults on different boilers, although you might think you have the same fault, please start your own post and name your boiler in the post and everyone familiar with that boiler will help you out