Baxi 105e combi boiler

[adferguson]

Hi
I have a baxi 105e the problem i have is a constant build up of air the the pump resulting in a 60 fault.
My plumber has tried a few things 1st swapped the pump 2nd changed the aav 3rd Fitted a magna clean, cleaning, flushing and inhibitor but I still have the problem. If I open the screw on the front of the pump when the fault happens I hear a hiss of air and then all if fine for a bit, I don't even need to reset the boiler. I have checked and bled all the radiators a few times but there is no air in them,
Last year I had the pcb, gas valve, both diaphragms and thermisotors changed over.
Having spent so much money on it I'm determined to get this problem fixed.
Any ideas please

 

[engineerman]

why spend so much on parts when i hate to say it but you would ov been better getting a repair by baxi or bg

 

[mfarrow]

So

- gas valve
- pcb
- diaphram
- thermistors
- aav
- pump

How can one boiler have so many faults in one year? It's impossible I think!

Is the system properly pressurised and is there any loss of pressure? The air has to come in somewhere!

I must admit mine always manages to push the air out even on a barely filled system. Have you got enough flow and at least one radiator without TRV?

 

[gas112]

why would you need to bleed the pump when there is an aav right on top of it

 

[45yearsagasman]

Has anyone bothered to check the filter gauze in the return tapping?

 

[gigz]

why would you need to bleed the pump when there is an aav right on top of it

+1. Is it open ?