Pool and Spa
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Hi my name is ***** ***** I have been in the plumbing field for 20 years. I will be glad to help you today. Have you tried removing the filter and as a test try running without the filter? Is the temperature displayed matching the actual temperature? What have you tried so far?
This is only a test. I am not suggesting that is the fix. Have you replaced the filter recently?
You also mentioned that you have tried almost everything. Will you provide a bit more detail about what you have tried? Will you try without the filter as a test? Even a clean filter will lose it's porousness with time and restrict the flow. When flow is restricted it tends to not allow the heater to run like it should.
Great. Let me know the result when you can.
So, the setting will not change on the topside control? Will it lower then allow you to increase the setting again? Or the temperature will not reach the setting?
I see. Sorry I misunderstood what the issue was. So, the issue is certainly a faulty topside control. Check first that the connector is making good contact with the control board. Turn the power off at the breaker and unplug the control from the board and plug it back in. Inspect the wire from the control to the board the best you can to see if there are any frays in the wire. If the cable is intact and disconnecting it and connecting it again does not solve the issue then replace the control.
If you are a bit handy it is not difficult to replace. The board is siliconed to the surface so carefully cut along the edge with a razor knife and pry up the control. Turn the power off and unplug the control from the board. If the cable cannot be easily fed from the location to the board then cut the cable from the existing board and tape it to the new cable for the new board. Pull the cable through from the control panel. Take the tape off and plug the cable in. Peel off the old silicone and put some new silicone around the hole being sure that it is evenly distributed to seal and secure. Place the new control in place.
I haven't heard from you. Was the information I provided helpful?