Vacuum Motor Circuit Board Dual Motor 18 amp 240v

Product Reviews

Customer Reviews

15 Reviews, 4.9 out of 5 stars
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4 star user rating.

Jan 11 2021 10:33PM

Used to repair a Nutone CV-850. It fits the holes perfectly. But it does not have the circuitry that monitors how full the bag is, so no more warning light at the outlet. I took a star out because the ground lead was way too short (5") to reach the ground bolt.

5 star user rating.

Mar 24 2020 6:33AM
Comments not provided.

5 star user rating.

Mar 24 2020 5:12AM

Board was not the exact replacement part, but the help full staff sent me a wiring diagram and it has been working great, I plan on using this company again.

5 star user rating.

Feb 10 2020 5:41AM

Easy to switch. Working, but does not have the ability to use the attachment at the unit anymore. But, I was unable to find an original or OEM part anymore. So, this saved me replacing the unit. I only used the hose attachment on the unit like twice per year anyway. Very happy with the purchase.

5 star user rating.
Mar 30 2019 6:52PM

My CV850 keet running.....without connecting to any hoses. after review online troubleshooting, I order and replaced the CV850 board with 236L model , it works ! Much cheaper than original part from

5 star user rating.

Jan 8 2019 2:51PM

had to pop a new hole it it, but worked great

5 star user rating.
Apr 18 2018 9:44AM
Comments not provided.

5 star user rating.

Sep 6 2017 9:42AM

I Installed circuit board on a Silent Master vacuum to replace one with a broken relay so the vacuum would not shut off. The new circuit board fit perfectly and since all electrical connections had slip on connectors it was a simple task to replace by just keeping track of the old wire connections to insure the new ones were installed on the correct terminals.

5 star user rating.
Dec 6 2016 12:02PM

the product comparable with Duo Vac. the company delivery time is excellent

5 star user rating.

Feb 16 2015 10:06AM

I installed the board and it works fine.

5 star user rating.

Jan 6 2014 7:53PM





5 star user rating.

Jul 1 2010 10:18AM

We have an M&S(AirVac) AV850A 220/240V 10A, but contains(2)110 Volt Motors.

The control board in my unit was obsolete and nonfunctional. Therefore,

I replaced it with this board which worked GREAT assuming is was wired

correctly. See in the Q&A section for this board under the "AirVac AV850 Board?" question for the correct wiring.

A very satified customer all the way from customer service and through

out the entire process !

Thank You so.......... Much!

A great company to do business with !

Frank, Zebulon, NC

5 star user rating.
Feb 13 2010 6:43PM
Comments not provided.

5 star user rating.

Jul 4 2009 4:45AM

MD Vacuum is the best! After paying through the nose for a service call 5 years ago, I searched the net and found MD. I've bought 2 replacement motors and circuit board and couldn't be happier. Their customer service should be a model for other businesses!

5 star user rating.
Feb 19 2009 9:59AM
Comments not provided.

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Vacuum Motor Circuit Board Dual Motor 18 amp 240v

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