I have a house about 4 years old now. I've got two zones driven with MA-ND3 actuators. The downstairs zone seems to be working fine - when I turn the AC off the damper closes and the light on the MA-ND3 turn red and the little arrow moves all the way to the left. When I turn the downstairs thermostat on the arrow moves a little beyond the half way point, the green light comes on air blows fine.
The upstairs is a different story. The light always seems to be stuck on green, and the little arrow is always stuck all the way to the left, the control panel says the damper is open, but no air blows.
I'm assuming this actuator is blown, but could it be stuck or dirty or in need of a reset or something?
Also don't these things come with 5 year warranties? If so, how do I cash in on that?