AshevilleSpa Posted January 28, 2021 Report Share Posted January 28, 2021 Trying to get a tub going, once it is plugged in, the high jets turn on, their button illuminates on the control pad but you can't turn them off when pressing the button. I've tried replacing the topside control and motherboard but the problem persists. Any ideas, could a bad pump or heater cause this? Not positive on the model but think it is a leisure bay, lb70 board and balboa mini oval 4 button topside. Pump is an aqua flo flo-master 03510631-2, 115volt. Thoughts? Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted January 28, 2021 Report Share Posted January 28, 2021 Faulty sensor off the top of my head. Post a pic of the circuit board and wiring diagram on the box lid. Do you have a multimeter? Quote Link to comment Share on other sites More sharing options...
AshevilleSpa Posted January 28, 2021 Author Report Share Posted January 28, 2021 Did read that a bad temp sensor could cause and should test the resistance, is that what you are referring to? I have a multimeter. Pic of wiring schematic and new and old boards. Quote Link to comment Share on other sites More sharing options...
AshevilleSpa Posted January 28, 2021 Author Report Share Posted January 28, 2021 1 hour ago, RDspaguy said: Faulty sensor off the top of my head. Post a pic of the circuit board and wiring diagram on the box lid. Do you have a multimeter? I believe it is a friction heated as well Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted January 28, 2021 Report Share Posted January 28, 2021 10 hours ago, AshevilleSpa said: should test the resistance Yep. Both sensors. Also unplug the topside. It should run automated functions without it, so if the jets stop it's a bad topside. 1 Quote Link to comment Share on other sites More sharing options...
AshevilleSpa Posted February 2, 2021 Author Report Share Posted February 2, 2021 On 1/28/2021 at 11:06 AM, RDspaguy said: Yep. Both sensors. Also unplug the topside. It should run automated functions without it, so if the jets stop it's a bad topside. Ran new board, topside, and thermostat, pump still running at full speed and not able to go lower. In researching the pump, it seems to be one speed, could this be why? It only has one pump, there's no second circulation pump. Was this a common setup for hot tubs? I'm starting to think that maybe it had a variable pump and the previous owner replaced with a one speed. Do any tubs out there just run at high speed all the time? If this is a case I might try to get a variable speed pump. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted February 2, 2021 Report Share Posted February 2, 2021 I have only seen that type of setup in a jetted bath. Looking closer at the diagram it does show a single speed pump with no apparent 2 speed option. Quote Link to comment Share on other sites More sharing options...
AshevilleSpa Posted February 2, 2021 Author Report Share Posted February 2, 2021 4 minutes ago, RDspaguy said: I have only seen that type of setup in a jetted bath. Looking closer at the diagram it does show a single speed pump with no apparent 2 speed option. But I'd think I should be able to at least turn the pump on or off with the button, which I can't do, I even played around with the jumpers on the board. May try to pick up a two speed. Thoughts? Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted February 2, 2021 Report Share Posted February 2, 2021 What good would it do you with no way to control it? Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted February 2, 2021 Report Share Posted February 2, 2021 4 minutes ago, AshevilleSpa said: should be able to at least turn the pump on or off with the button Are you sure you are wiring it correctly? Those relays have 2 spade connectors, and one will be hot all the time. Quote Link to comment Share on other sites More sharing options...
AshevilleSpa Posted February 2, 2021 Author Report Share Posted February 2, 2021 17 minutes ago, RDspaguy said: Are you sure you are wiring it correctly? Those relays have 2 spade connectors, and one will be hot all the time. I had it on the relay spade as shown in the diagram but did try the other one just in case, good idea, still didn't work. It did give me another idea, the ability to turn off the pump by button may be disabled due to the low water temp, 40s, gonna let it run all day tommorow to see if it gets up to 70 or more and will then hopefully let me control the pump. Having changed all the parts except for the motor, the water temperature is the one other variable that hasn't changed. Thoughts? Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted February 2, 2021 Report Share Posted February 2, 2021 Yes it is likely in freeze protection until it gets up above 60 degrees. A 110V spa with a 1KW heater can take up to 36+ hours to heat from 50 degrees to 100. A spa that heats with friction and pump heat like yours might take even longer if the outside temp is low. Always best to fill with some hot water if at all possible. The first 30 degrees from 50 up to 80 take the longest. Quote Link to comment Share on other sites More sharing options...
AshevilleSpa Posted February 2, 2021 Author Report Share Posted February 2, 2021 Kinda kicking myself for not realizing the freeze sensor (assuming that fixes it) before ordering all these replacement parts. On a positive note, it forced me to get a better understanding of how exactly this hot tub works. I think the thing that threw me off most is I didn't realize it was a one speed pump without a second circulation pump meaning it's either on or off and not maintaining the heat when it's off. Seems dumb but it is a cheapo plug and play, ya get what you pay for. I'll give you an update once the temperature gets up but it will take a long time because it's a friction heater (another type of hot tub part I didn't realize existed until I started researching this). Thanks! Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted February 2, 2021 Report Share Posted February 2, 2021 You could save yourself a lot of time...and money if you could find a way to hook a garden hose to hot water source. (Laundry tub tap?) Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted February 2, 2021 Report Share Posted February 2, 2021 "Friction heaters" aren't heaters. It will take until Easter to heat that thing. Quote Link to comment Share on other sites More sharing options...
AshevilleSpa Posted February 2, 2021 Author Report Share Posted February 2, 2021 Agreed, but happy to report that I'm at about 70° and I can turn the Jets on and off now. Now that I have a better understanding of how these hot tubs work I may try to upgrade it with a proper heater and two speed pump. I'm thinking my electric bill will be scary this month 🤣 Quote Link to comment Share on other sites More sharing options...
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