So I got the fridge transformed, installed all components, hooked them up the brewspark v3, and away they went…
Well, not exactly, the temperature inside the fridge didn’t budge. The tube heater did not heat up.
Eventually I increased the period for the ‘Ferment Heat PWM’ from 10s to 40s.
This seemed to do the trick. When confirmed everything worked as I expected, I reset the period to 10s.
During the night the temperature dropped to 17C (from the configured 20C).
The next morning I changed the period back to 40s, but the temperature has budged.
What else need I to be looking at?
Everything else is default, per new installation.