Look at the circuit some way above.
There are no relays in the blower circuit.
The only fuse is F64. Is it actually blowing ?
Have you disconnected the plug in the blower motor and checked, with a good F64 that you have 12v.
If it is blowing the fuse, it could be the motor is stuck due to water ingress. Remove the motor/fan and check.
Full details of rectification has been covered a few times above.

Martin