RoyVV Posted October 21, 2021 Report Share Posted October 21, 2021 2004 (i believe? SN M1F1554) tiger river bengal m well--like a knucklehead, i drained my tub without cutting the power. after an burning electrical smell and a new control panel (retained heater relay board--i think its ok) i filled it up and got it filled up again. for some reason, the water temp seems to be holding at 91 degrees (set to 101). any ideas on why its not heating up to 101? we're at about the 14 hour mark. Quote Link to comment Share on other sites More sharing options...
RoyVV Posted October 22, 2021 Author Report Share Posted October 22, 2021 bad temp sensor? bad heater? help! Quote Link to comment Share on other sites More sharing options...
cranbiz Posted October 22, 2021 Report Share Posted October 22, 2021 Could be any of those. Start with a multimeter and ohm out the sensors. I would suspect any sensor that lives in the heater housing. This is a Watkins tub. Maybe @castletoniacan help. Quote Link to comment Share on other sites More sharing options...
castletonia Posted October 22, 2021 Report Share Posted October 22, 2021 There should be an error of some kind if its a thermistor. I would be thinking along the lines of heater or circuit board but I wouldn't be ordering any parts without proper troubleshooting. Quote Link to comment Share on other sites More sharing options...
RoyVV Posted October 23, 2021 Author Report Share Posted October 23, 2021 yeah--no error notifications from what i can tell, topside. it seems to rise to ~90 degrees fairly quickly but then stops there. i hope its not the circuit board, as i just replaced that since there were some visibly melted components on the raised piece in the top, left corner. visibly, the heater relay board is fine (i know that's not necessarily the way to tell 100%). Quote Link to comment Share on other sites More sharing options...
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