I’m having issues with my mastertemp 400 control board. When I turn the heater on, from the app, the control board attempts to turn on, but then errors out and the display turns off. I can then manually turn on the heater from the control board interface, but it does not turn back on once the hot tub falls below set temp. Does the control board need to be replaced, or do I need to look at the pool control panel?
Below is a video of the issue.
Below is a video of the issue.
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