hooking up an SWG flow switch to the MEGA-BAS? #425
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Ok, this deserves some ridicule... the whole time I'm testing and not getting results I'm thinking the SWG flow switch is just dead. Then I hook up a known good 10k thermister and a chem flow cell switch that I had working before in my "lab" and I'm getting no readings from that either. That's when I noticed that somehow my MEGA-BAS I2C device was not set to active. 🤦♂️ So now it is set to active and I get readings for both the flow and the temp from the 4 wire SWG flow switch. Temp readings are not , "Low Temp" - reading perfect room temp. Flow readings work when the metal spring is pressed all the way against the flow switch body. No way to tell how much my actual pool flow is bending the spring but it doesn't take much to bend it. Can't imagine it's not making contact under normal flow. Which begs the question. If the flow switch is working fine but SWG is still reporting low flow/low temp.... ??? |
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Unfortunately, your SWG can report "Cold Water" or "Low Flow" for conditions that are neither. If you want a head scratcher there is a bit reserved for communication lost on comms message. Not quite sure who they would send that to. Maybe that inactive port you set up (sorry I couldn't help myself). I would try to jumper that flow switch. Not completely sure of the wiring but I would guess you would simply tie the wires that would normally go to the flow switch together. |
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yea, I'm not really sure where I'm at with this thing. I closed the flow circuit but nothing changed. Right now I'm stuck in a loop where it cycles between "Low Flow", "Comm Lost", and "Ok" every few seconds and the lights on the unit are flashing like it's just starting up. if I pull power, it just finds this state again. At some today point it will snap out of it and start producing but no telling what's causing that. Also tried pulling the com port connector on my swg power center, checked contact with wires leading back to OCP - both ends of the connection looked good. Big $$ gamble thinking a new unit will fix this problem. So before I sink $1K into a new unit, anything else you can think of first? |
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I'm troubleshooting constant low temp/low flow error on my SWG. Have tried switching out the flow sensor but they keep coming back. Pool is 80 degrees and flow is good with no air bubbles and running at 2600-2900 rpm, so should have any problems with temp/flow.
Has anyone tried hooking up the 4 wire flow sensor to the inputs on the BAS to see if you get a reading?
this diagram makes it look possible. Says the black/red wires are flow and the green/white wires are a 10k thermister
https://www.troublefreepool.com/wiki/index.php?title=Pentair_Intellichlor_ICXX_SWG#Replacing_Bad_Temperature_Sensor_in_the_Flow_Switch_with_a_Separate_Sensor
Was thinking I should be able to hook up the black/red wires to a dry contact input and the green/white wires to a 10K input and get readings but so far no luck.
Testing with an older flow switch that's not in use but receiving a new one today and wanted to see if I was getting a good signal on both flow/temp before installing.
Is this making sense? Should I be getting good flow/temp readings in REM with this sensor?
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