Replacement Damper Motor Actuator for Honeywell ARD ZD M847D 2 Wire Spring Motor RZ3-1MNormally Ships Same Day

Several years ago, I installed two Honeywell M847D damper actuators in my HVAC system. When I noticed that the air conditioning was cooling the house unevenly last week, I realized they were about 12 years old (I oiled them about 5 years ago). After investigating, I found that the actuators had become Once I unstuck them, I found both large gears had missing teeth, so neither would control the damper reliably, so I had to replace them. It's wonderful to have found these RZ3-type games A replacement unit of 1M is available. Despite being expected for delivery 3 days later, they were delivered 3 days sooner. My first concern was that the shorter threaded hex head bolt from the Honeywell unit would be faulty, so I replaced it with the longer bolt, which was not a problem. When I installed them, I discovered the shorter bolt was actually a better choice, so I went back to the original bolts. Since the bolts were shorter, I could just fit my Allen key wrench over the top of the unit and tighten or loosen the bolts. * The instructions provided in the instruction manual were extremely helpful. As an additional feature, they come with a 24V troubleshooting LED, which can be used to verify that the actuator receives It didn't serve my purposes, but I did test it out as a proof. A future reference that may be useful. It only took a couple of minutes to install each unit, and they worked immediately afterwards. After a few minutes, the temperature in the home returned to normal. A well-made product with good instructions, that was easy to install and worked right out of the box, appears to be the case. This is the first time a repair project has gone this smoothly for me!.

Mccoy Sweeney

| Jan 06, 2021

On the new motor, it would be nice if the set screw extended beyond the body of the motor, as on the Honeywell motor. The first thing that I had to do was get my step ladder in the right position to ensure that I could see what I was doing, as well as take the time to get my hands and arms around the duct work to.

Elena Daly

| Apr 05, 2021

Since I have been having trouble with my air system pushing air into the wrong places, I have suspected the damper motor (Honeywell) is blocked. My gut told me to take a chance before calling out the professionals. It turned out to be a good idea. I was able to replace it easily When I got to the damper I stumbled around the attic space a bit and decided to shut the machine off. This is accurate and perfect. My damper motor has clearly suffered damage to its plastic gears, so I have ordered a second one in order to replace it. Also, it's nice to have a test light, but be careful when using Although I'm not sure what caused the fuse to blow when I tested which damper was activated, I managed to blow the fuse. I had to go to the local hardware store to buy a new one.

Kylian Rice

| May 20, 2021

A very robust, high-quality design The Honeywell unit it replaced had far superior design and construction to the unit it The best one is this one. You can shop around if you'd like, but this is the one to buy. The chuckleheaded oversight on my part led to me not noticing the set screw in the actuator shaft, which of course (duh) had to be removed before the long hex bolt from the Honeywell unit could be inserted. In a word, it was out of this world You can end the class there.

Paulina Maddox

| Mar 26, 2021

I hope to use this for quite a while. The installation was very straightforward. The two wires from the old unit must be disconnected, the Allen screw loosened, and then the old unit can be removed. The new one should be placed in place (ensuring that the damper is fully open, of course), the Allen screw tightened, and the two wires connected. There is less than 5 minutes to talk. The device opens at a faster and smoother pace than the original from Honeywell, and the closing motion is smooth and steady. It has so far been satisfactory to me. The only way to find out how long it lasts is to wait and see.

Roberto Tanner

| Sep 23, 2020

It was making a clicking noise (stripped plastic gear) in one of my furnace duct damper motors, and I bought one of these to fix it. Although I thought I might be able to find a replacement for such a highly specialized item Here is a picture of the part you see (computer controllers). As an alternative, I found this part and it took a minute to install and the wiring was immediately active as soon as The description is plug and play for this reason. I was impressed with the speed of shipping, and I considered the price reasonable given how complex this servo unit was. I have now restored my HVAC system to where it was designed. You're the best!.

Cillian Vaughn

| Jul 16, 2021

The original Honeywell damper cube had a screw tightening the damper onto the stem that stuck out from bottom which rotated the damper open/closed and could not easily be replaced. The one in this article does not If you want to tighten it, then you should use Allen wrenches. As well as the fact that the replacement is made to be used in the opposite direction than the OEM, it presented a challenge. The last drawback to this one is that it does not have an indicator to tell you if it is The air should be blowing through the vents, so run to the vents to check. Other than that, it works!.

Clementine Fletcher

| Dec 03, 2020

The unit is very well constructed. Some of the reviews I read described other units with plastic gears and how they All of these pieces are metal as explained in the description and took about 15 minutes to install along with getting both blend doors adjusted correctly. Our unit was originally equipped with a Honeywell actuator that is a direct replacement.

Frank Brennan

| Feb 18, 2021