I have an Ultrazone board and my installer used 3 damper actuators that have all failed within a few years. They are Carrier Bryant dampact45degb:
Do you have a recommendation on what to replace them with? I would specifically prefer actuators that are "smarter" and turn themselves off once they reached the open or close position. Since your board outputs a constant power when it wants a zone to be opened or clsoed, all these dumb actuators keep the motor spinning and eventually wear out the gears and are really noisy. The current failed actuators open to 45 degrees so the replacement would have to support that.
Thanks!