We increasingly experience F75 fault code. Initially this only occurred when we had left the house for a week on holiday and was reset by simply re-booting.
When this didn't work, on one occasion I found that bleeding a little air out of a radiator changed the pressure sufficiently to clear the fault on re-boot.
Now the fault is occurring more frequently and once even when the boiler had just sat overnight. It is summer so we are not using heating at present.
So far I have found that a small top up of water pressure to the CH system using the flexi hose will clear the fault on re-boot. I should say that the pressure in the CH system seems to hold up okay.
Because a slight pressure change appears to help, I have assumed that the sensor may be sticking and requires replacement.
Is this a fair assumption? If not what?
Thank you!
When this didn't work, on one occasion I found that bleeding a little air out of a radiator changed the pressure sufficiently to clear the fault on re-boot.
Now the fault is occurring more frequently and once even when the boiler had just sat overnight. It is summer so we are not using heating at present.
So far I have found that a small top up of water pressure to the CH system using the flexi hose will clear the fault on re-boot. I should say that the pressure in the CH system seems to hold up okay.
Because a slight pressure change appears to help, I have assumed that the sensor may be sticking and requires replacement.
Is this a fair assumption? If not what?
Thank you!