Looking for a little troubleshooting assistance for my 2010 HotSpring Jetsetter spa. This morning i noticed that my temperature had dropped from 100 to 90 degrees. Both the Ready and Power lights on the control panel are blinking in unison. I have tried resetting the spa numerous times by unplugging it and letting it sit for a few hours, same issue when i plug it in. I have removed the filters, run the pump to see if there was an airlock, but same thing. Filter are TriX and they are spotless so it is not a clogged filter. I have also run water through the grey standpipe to try and remove any air bubbles.
My cir pump developed a crack last month and i replaced it at the time and all was working fine. The cir pump is running fine, the lights and the jets work, just no heat. Trying to determine if i need a new heater or another new part related to the heater.
Any help or suggestions would be greatly appreciated. thank you so much.