Get an EEV Open (Like Magic)


This tech tip comes from our contributor, compressor decapitator, and super tech Ulises Palacios.

Many ductless systems and some high-efficiency unitary systems have electronic expansion valves.

If you find one that is stuck closed, you may be able to get it open temporarily by putting a strong magnet like the one shown above on the valve body and turning it counterclockwise.

This is likely only temporary, so valve replacement is still needed. However, it can help get the customer's equipment running while you wait to get a new valve.

Pretty cool, Ulises.

—Bryan

P.S. – if you have any videos or tech tips, you can tag me with them, post them in the HVAC School FB group or email them to bryan@hvacrschool.com.

Related Tech Tips

VRV Basics
This tech tip was written by experienced tech and VRV specialist Ryan Findley. Thanks, Ryan. This is a quick overview, not a substitute for taking proper manufacturer training.   This tech tip is geared towards the mechanic who is fairly new to VRV systems. As with anything, before we harness the ability to install or […]
Read more
Charles's Law
Jacques Charles was a French physicist (and a real looker based on that photo) born in 1746. Little is known about his educational and family background, but he began his career as a clerk at the Ministry of Finance in Paris. After a short time as a financial clerk, he began focusing on science. The […]
Read more
Learning from the Past vs. Allowing it to Control You
In our line of work, it's all too easy to let your bad experiences inform your present and future experiences. That is especially true if you have a high emotional range. Having “emotional range” is a polite way of saying that you're a bit up and down (maybe even neurotic). We don’t believe that sensitivity […]
Read more

Leave a Reply

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

loading

To continue you need to agree to our terms.

The HVAC School site, podcast and daily tech tips
Made possible by Generous support from