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.....Today it has a FL2 error code.....Mine just runs Pump 1 in low speed for filtering/heating (not continuously of course).....the code goes away with Pump 1 on in any speed, but stays on with Pump 2 on or no pumps on.So I know this is the flow sensor.....Any tricks out there besides remove and replace? The Jacuzzi repair manual suggests unscrewing the sensor from the housing and checking for debris. Worthwhile? I'm thinking its possible that the spa system flush I used might have gotten some gunk stuck in the sensor. Possible ways a hot tub newbie might have screwed it up with initial start up?..... I read one post somewhere about possible damage from heater on with no flow. Is this an accurate possibility? Thanks!
The question is, why does you circuit board expect the system to be running with the switch closed and the heat on. Is it in a program filter operation, or a thermal demand operation with the heat request higher than the actual temperature.
So I thought trying to visually inspect the switch would be a good next step, but I can't seem to find the thing Where should I look? I didn't see it near the control panel. Are they sometimes installed on a different side?
Quote from: overlandsea on June 16, 2014, 11:35:40 pmSo I thought trying to visually inspect the switch would be a good next step, but I can't seem to find the thing Where should I look? I didn't see it near the control panel. Are they sometimes installed on a different side?Ok, answered my own question. I was looking for the switch in the clear housing. This has the pressure switch that is inside the control box and appears to be going into the heater directly behind the control box Anyways, I unplugged it from the board and plugged it back in. It wasn't obviously loose, but could have been (wasn't the tightest connection ever). Also, there was a plastic tightening washer on the threaded bolt of the pressure switch. It was completely backed off. That seemed odd, so I hand tightened it. Anyways, it seems like one or both of these has fixed it. No error code yet at least.