Original > Hot Tub Forum
Flashing FL2 Error on at high temp???
kenbulmer:
So I did some more tests this morning.
The FL2 starts flashing when the temp gets to 102. It appears to be only flashing when the heater is off. Once the heater is off and the temp sat at 102 for a minute or so it started flashing. At that point if I raise the temp the FL2 stops flashing and a few seconds later the heater comes on. Once the heater goes off the FL2 starts flashing again. I've got a video of this happening.. I'll see if I can get it up on YouTube or something and put a link in a post.
Any ideas? It seems like everything actually functions the way it's supposed to.. just have that error once it gets to 102.
Jacuzzi Jim:
My guess is the circ pump stops running at that point for some reason and it gives the flo2 error, then when you up the temp it calls for heat and turns the pump back on. If you hold the + and - btn down at the same time and wait 5 or 6 seconds what shows up? Should be L1 L2 or L3 anything higher than that your in a economy setting. Still shouldn't do what it's doing so taking a shot.. I can give my tech a call in the AM see what he thinks, gotta be the flow switch or the board.
kenbulmer:
When the FL2 is flashing the circ pump still runs... even when it's not heating. (so normal behavior) When I hold + and 1 it shows F1 on the panel.
SerjicalStrike:
Sounds like a stuck circ pump relay. Sometimes when the circ pumps go bad, the cause the relay(s) to stick closed as well.
When it is heating, the circulation pump is supposed to be on, so no error. When the pump is supposed to be off, and is still running, the flow switch recognizes that and sends the FL2 error.
Does the circulation pump ever shut off?
kenbulmer:
Now that you mention it I don't think I've seen the circ pump go off at all since I've replaced it. How would I check the circ pump relay? Is that something on the pump itself or on the system board?
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