ammot Posted January 16, 2019 Report Share Posted January 16, 2019 my sundance optima has a problem with the control pad,it is lit,it does not function though,the tub is still heating ,the heat icon is on ,it seems to be holding temp but I cannot run any controls and there is no display,any ideas where to start thanks in advance Quote Link to comment Share on other sites More sharing options...
Jersey Hot Tub Repair Posted January 17, 2019 Report Share Posted January 17, 2019 Do you have an auxiliary pad? If so, disconnect it. I've seen many times were a bad auxiliary pad affects the main control panel. Unfortunately, the best way to test a control pad is to replace it with a good one and see if that helps. But if you're not in the hot tub repair business, the chance of having a spare laying around are pretty slim.... Dave Quote Link to comment Share on other sites More sharing options...
ammot Posted January 17, 2019 Author Report Share Posted January 17, 2019 thanks dave ,there is an auxilaty pad wich controls lites and water fall,that seems to work fine,would you think the transformer would have anything to do with the control pad,like I say it is lit,the change filter icon is on and when the heat is on the heat icon is also on,i see the transformer does send something to the pad itself,but it is lit so im assuming the voltage to the pad is correct???,is it possible a flow sensor could be the culprit(just thinking out of the box) thanks for your input Quote Link to comment Share on other sites More sharing options...
Jersey Hot Tub Repair Posted January 17, 2019 Report Share Posted January 17, 2019 Sometimes an auxiliary control pad which is working fine screws up the main control pad. Easy enough to disconnect and test. The transformer typically sends 12V to the appropriate circuits. If the heat icon is on and you get some display during start up, you're probably getting useful voltage, but it's not difficult to check. You should measure 12-14 AC Volts across the two yellow wires on the transformer connector at the circuit board. Be careful, there's a lot more voltage on the black and white wires. Flow sensors have nothing to do with topside displays. The flow sensor just tells the circuit board if water's moving. Quote Link to comment Share on other sites More sharing options...
ammot Posted January 17, 2019 Author Report Share Posted January 17, 2019 got it, will check tonite thanks so much again Quote Link to comment Share on other sites More sharing options...
ammot Posted January 18, 2019 Author Report Share Posted January 18, 2019 dave,i just un plugged both ribbon cables to the remote unit,it did not help,i did not un hook the volotage wires to the remote unit,but I would assume that would not matter,correct???,not sure what to try next,if you were a betting man would you think pad or board would be bad ,thanks Quote Link to comment Share on other sites More sharing options...
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