Please read the entire description…
A look at the supplemental electric heat installation on the “C”.
I believe the “Eco” mode will inhibit Quick heater operation, but in a step down manner if already in operation at the time of “Eco” mode selection.
Tooling utilized: Hantek 2C70 hand held scope & the Hantek CC65 amp clamp probe…just Google it, widely available.
![](https://i.ytimg.com/vi/RmcKCw-zrgk/maxresdefault.jpg)