First time user of spa. Bough the house and spa was there. So I empty it, clean it, fill it, treat water etc.
Everything is fine, I used it twice. First time I used it the FLO message during the time pumps were functionning and then it disapeared 2-3 minutes later. Second time I used it FLO message appears again when the pumps are functionning. This time I close the pumps and the FLO is still there (Flashing between temperature and FLO).
I hear the pump "functionning" and tried to remove my filter like they say in the documentation (switch off, remove filter, wait 2-3 minutes and boot again) to make sure it wasn't a dirty filter. FLO message is still there. I also read some stuff about air lock so I tried to push water in the hole where the filter attach, no luck again. Didn't really seems to work very well anyhow.
Then I don't know how or why, but I found out that when I turn my waterfall valve to fully open, I don't have the FLO anymore and heater comes back online. And I tried it more than once. I tried almost closed, half, almost open and it only seems to work when it's fully open.
Does anyone has an idea on what could be my problem?
Heater and pump seems like they worked fine until now so I somehow doubt it could be the problem.