Jacuzzi j235 circa 2017. Not working

[houser]

Hi all new here ! As title, the hot tub was filled back up today after not using this winter (uk) all was normal upon start up, slight air lock but cleared itself, left it running to heat up, gone back out to check and this display was showing 000, couldn't  find any reference to this so turned off at isolator and back on, then all that would happen is the pump would turn for 1 sec and go off with nothing on the display.

Now all that happens is the spa doesn't come on or show anything on the display at all. I've check power to the main lead on both sides of the isolator, so problem is something to do with the tub, anyone have similar experience or can point me in the directions of things to check ? TIA 

 

Thanks, 

[houser]

Solved- was dirty connection on PCB.

 

Now getting fl2 code, which is flow switch, but i can find it, my tub only has ha pressure switch, any ideas if this doubles up as a flow/pressure switch ?