I’d like to control a QuietCool ES-3100 2-speed fan using ZFM-80 relays on a SmartThings hub. The fan has separate circuits to control low and high speed. I haven’t found out if powering both circuits at the same time would cause damage to the fan, so I’d like to avoid it. I can either control through scenes or routines that only one or the other is ever on, but this could still go wrong in the transition phase or if there is a transmission error for one of the commands. I also saw for the ZFM-80 relays that they support an external switch contact with configurable logic, so I wonder if you could wire them together so that switching one relay on switches the other off and vice versa, kind of an XOR logic.
Now my questions:
- Does anybody know what happens to QuietCool fans if both high and low circuits are on at the same time?
- Is wiring two ZFM-80s together into some sort of XOR logic possible?
Any other suggestion to achieve this through scenes, routines, or other software logic?