AlaninTx Posted April 23 Report Share Posted April 23 We had a power surge last night and when I went to use my hot tub (about a 2007 Coleman (Maax) 461 with Balboa electronics, it read “STU” (motor stuck?). As usual, first troubleshooting step - power off and power on. That replaced the message with “HOT” (something overheated?). Everything was nice and cool, so I powered it off, moved A1 up to test mode, powered it on and got “OHH” (Overheat?) , which is where it now sits. Kind of strange as it happened in the middle of the night with the tub in standby on a 40° F night. I just started researching it, but figured I’d reach out and see if anybody has the “magic bullet” (not the food processor). I took a pic of the Balboa circuit board if that helps. Thanks, in advance, to anybody that can get me a couple more nice nights in the tub, before the brutal Texas summer rolls in. All thoughts and opinions welcome! Thanks! Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted April 23 Report Share Posted April 23 Test the 2 green buss fuses that say SC25 or SC 30 on them. Does the heating/filtering related pump run in low or the circ pump if it has one? Test the incoming power and make sure you have 240V red to black and did not lose a leg in the gfci when it took the hit. Quote Link to comment Share on other sites More sharing options...
AlaninTx Posted April 23 Author Report Share Posted April 23 I’ll try the Buss fuses today. Pump/heater does not run at all. i believe the incoming power is ok, but given the power surge, that is certainly worth checking. Quote Link to comment Share on other sites More sharing options...
AlaninTx Posted April 25 Author Report Share Posted April 25 The good news - the buss fuses measured ok. the Bad news - now the 50 Amp GFI trips whenever I try to turn on the power. Something must be shorting out. I think I’m in for a long ride. any and all ideas welcome. Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted April 25 Report Share Posted April 25 Most common trip cause is the heater element. Disconnect the heater from the board and see if it holds. If it still trips disconnect each component one at a time until it holds (pumps, Ozone). Post pics of the circuit board and the schematic on the inside cover so we can see what you have and how it is wired Quote Link to comment Share on other sites More sharing options...
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