Baxi solo dry fire?

The baxi solo dry fire alarm comes on after about a minute.
Pump working ok, no air in system, magnaclean filter cleaned. Boiler serviced recently when working normally,
Im lost to figure out whats the problem.
Is it a PCB card or a flow switch ????
Gerry Keane, December 2020


done
https://www.diynot.com/diy/threads/baxi-100e-dry-fire-alert.214266/

https://www.diynot.com/diy/threads/baxi-lockout.75451/

Those two suggest checking the flowswitch

Phdsr, December 2020
link Click here to see other fixes for Baxi.