Baxi 105e intermittent fault on pump or low system pressure

[victor71]

Baxi 105e Intermittent fault on pump or low system pressure

I have got a problem with baxi 105e, this is the flashing light by the triangle/ 60 degree section.
This has happened three times now in the last two days.
Neither the central heating or the DHW works for a period of time say an hour then the light will stop flashing and things are back to normal. Its happened again today and boiler not working at all for an hour or so. The pressure in the system is fine. Any help please ,thanks.

 

[DP]

Boiler service should fix it

 

[victor71]

hi DP, what should we looking at especially while servicing, to fix this problem?

 

[gas112]

pump proving pin is sticking needs stripped cleaned and greased its the one that activates the top microswitch