F75 error Vailent boiler - no running hot water

[RrogerD]

Hi,
As per the title, no hot water at the taps. The tap runs hot but then cuts out with the F75 code.
Any thoughts on what it could be before I call the engineer out? Anything a lay-person can try? I tried switching off and on again but no difference.
It had a new fan and PCB in 2021 and the boiler itself was new in 2014
Thanks

 

[CountryFan]

Ahh google - maybe doesn’t hold all the answers and isn’t The Oracle. F75 usually relates to a faulty pump or pressure sensor. Not a diy job as opening the cover forms part of the room seal/combustion circuit. Have you tried resetting the boiler? Try adding a little water, can just get it to limp along if not the pump until your engineer sorts it out.

 

[Stadan20]

Edit - stuckinarut covered what i said

 

[DP]

Hi,
As per the title, no hot water at the taps. The tap runs hot but then cuts out with the F75 code.
Any thoughts on what it could be before I call the engineer out? Anything a lay-person can try? I tried switching off and on again but no difference.
It had a new fan and PCB in 2021 and the boiler itself was new in 2014
Thanks

Get the boiler serviced for a start
May be just me, never replaced a fan as well as a PCB at the same time. Have same boiler

 

[RrogerD]

Get the boiler serviced for a start
May be just me, never replaced a fan as well as a PCB at the same time. Have same boiler

It's in a rental. I think the plumber wasn't sure at the time so did both just in case and to save a revisit and a further delay.