Pool and Spa
Questions about Pool Repair? Ask an Expert Online.
What code are you seeing?
OK that means Economy mode and it only heats during the programmed filter cycles. In most spas you press the temperature up button and then the light button within 3 seconds or at the same time to get it to change from EC to St (standard) if you have the owners manual look for mode settings.
Did you check owners manual or just tried my suggestion? Every manufacturer is different. As for other resets, no there is not anything other that a manual mode change sequence. If that does not work you can try to turn off breaker for 1 hour and try to do a hard reboot, if that does not work it is either a bad topside or bad circuit board that is not accepting the commands. You can try and contact Master Spas as that is the manufacturer of the 7.2 Twilight spa. Here is a site for a new topside,