Quick question about f1a fuse for gas boiler

[opm]

Hi,
Managed to blow the fuse on my boiler circuit board last night, anyway little fuse 20mm x 5mm and marked up as F1A on it.
From googling the F means fast blow and I presume the 1a means 1amp?.
The boiler is an ideal slimline classic FF350 for reference.
So am I right in presuming it’s a 1 amp fuse?

Thanks

[OutInTheShed]

Fuse rating should be written somewhere o nthe equipment, it's often a mistake to assume the old fuse was the correct rating.
I'd try a 1A fuse, but it perhaps blew for a reason....

[opm]

On circuit board it just says F1A by side of fuse holder

[theboss]

I'd buy a bunch of them as whatever caused the first one to blow may well continue to occur.

When it happened with my boiler it exposed the fact that the whole system had been wired from the boiler's permanent live rather than straight from the fused supply off the consumer unit, so the power for 3 pumps, 2 wiring centres, a dozen actuators and smart thermostats was all going via the boiler's PCB.

When an actuator stuck it blew the boiler's 2.5A fuse instead of the 3A between the boiler and the consumer unit.

It took me quite a few fuses to identify the fault.

[opm]

I know exactly why it blew, I was testing power to the fan and my multimeter leads got a bit tangled as such as I took them back off leads causing the two leads to touch, a quick spark and hey presto….a blown fuse