Fan Minutes Per Hour/Compressor On

Single stage, single speed system. Very vanilla.

If I enable the “fan minutes per hour” setting, the fan does indeed run the correct amount of time per hour even if the compressor isn’t needed. This is good.

However, for some reason during an actual cool cycle, the fan will also start running about 5 seconds before the compressor kicks in. This causes a short but noticeable dip in the blower fan speed as the compressor spools up. I can’t tell if this because there is a blower OFF/ON being sent from Ecobee during compressor activation, or if it’s a voltage drop caused by compressor kicking in.

This doesn’t happen if mins/per/hour is disabled. Compressor and blower turn on at same time.

I’m concerned this behavior will damage the blower over time.