Chaffoteaux Minima MX2 24 FF 40 60 80 Error?

I have a Chaffoteaux Minima MX2 24 FF boiler.
It is flashing '40 60 80' and the boiler doesn't ignite. No heating or hot water.

According to the manual this code means:
'Fan on but does not activate air pressure switch'

The fan comes on but the pilot light doesn't light.

Checked the Air Pressure Switch by gently blowing in the tubes. Could hear the little clicks.

Also brought a new switch just in case but still getting the same code.

Checked the two glass fuses in the pcb and they seem fine.

Any ideas what else it could be?