iFan02 and iFan03 stopped working

[finity]

I assume you are on the latest version of HA?

if so then the fan control schema has changed. It no longer uses speeds to set the speed of the fan. It now uses percentages to set the speed.

And so for that reason the fan control entity row will no longer work because it it uses the fan.set_speed service (which is deprecated).

If all that is true then you need to change to using the fan percent button row

However, depending on how you set up the fans in HA (discovery or manual set up of an MQTT fan) then you might also need to change the fan configuration in HA to use the new control schema.

Here is a thread I made for that:

How-to: Using the iFan03/iFan02 running Tasmota on MQTT with the newest updates to the fan control models after HA V2021.3.x

For anyone that is trying to configure their iFan03/02 MQTT fans using the newest fan controls here are the ways I have configured mine. I’ve tested both of the code configs below on the iFan03 but they should also work on the iFan02 as long as the topics are the same. There are two ways to set these fans up now - using “percentages” or using “presets” for the speed controls. With both of these configurations you will need to adjust your topics to the correct ones for your fans. Here is the …

hopefully you can glean the info you need out of that.