Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove the fuse from its holder at position F1 on the PCB

Measurement:

Measure the resistance of fuse.
Note:
The fuse is rated 3.15A and is sometimes referred to as this, F1 refers to its location on the PCB.