Ideal boiler displaying F1 error but pressure is as should be

[MaxM150500]

My boiler is displaying the F1 error meaning I have no hot water or heating. A quick google search tells me that this error is caused by low pressure and theres many tutorials on increasing the pressure. However, my problem is that the pressure guage is telling me the boiler is at ideal pressure (~1.3 bar) so im not sure why im getting a low pressure issue. Ive 'reset' the system, ive turned it off and on and ive also turned it off and on at the wall as i thought maybe it was just a reading error but no luck, still giving me the F1 error.

I could use some advice!
Thanks,
Max

 

[SimonG]

Pressure gauge could be goosed. Try adding water and see what the gauge does.

 

[Scott_D]

Drain some water to see if the pressure drops

 

[king of pipes]

As above don't trust the gauge it may be stuck or faulty try adding a small amount of water you find it springs into life ??? If not contact a GSI . Kop