3dron Posted January 7, 2022 Report Share Posted January 7, 2022 I am getting no heating but all the cleaning timer functions keep running fine. Pumps run at all range settings from circulate to full. I have checking if filter blocked/dirty/greasy. Even tested without filter. I have powered off for 1 minute and turned breaker back on. On power on no error codes, it just comes up to full menu with START blinking. I have Ohm tested both Heat Sensor and Hi Limit with Ohm meter set to 20k Main heat sensor (wire feeds under tub) reading is 1 without movement. Is this reading broken or just because the sensor is touching such cold water? (cpanel read 50°) HI Limit sensor which I can see is attached to metal pipe right below control panel reads 11.83 I jumped the heat sensor cboard pins, powered back on and it reads 115° on cpanel but START still blinks. I tried running through the pump levels and clean setting shortly. But it still blinks START. At this point I just unjumped. Should I still let it run jumped to see if the water heats? Or should the START stop blinking immediately if the sensor was an issues? Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted January 8, 2022 Report Share Posted January 8, 2022 Replace both sensors. Quote Link to comment Share on other sites More sharing options...
3dron Posted January 10, 2022 Author Report Share Posted January 10, 2022 I hope it's just sensor replacement. Could I get some clarification? I just like to understand how everything works. If the water is around 50° and the display shows 50° and when I jump the pins I get 115° which also seems correct and that board is also taking in i out correctly, then would it be a bad sensor. Or is 50° just a default reading when the sensor is open (cracked?) And if the tested Hi Limit gave 11k ohms at this water temperature is that correct? Doesn't that sound like a healthy sensor? Is there any way to jump/open the pins to trick cboard and see if the hot tub stop blinking "start" and starts heating? If I bought new sensors I could just plug them in but not installed and at their temperature reads the tub should start working properly correct? (because outdoor temperature is in the 70s. Thanks 3dron Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted January 11, 2022 Report Share Posted January 11, 2022 All that matters is the difference between sensors. If that is more than a couple hundred ohms you need new ones. Always replace both at the same time. Quote Link to comment Share on other sites More sharing options...
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