Get Tech Tips
Subscribe to free tech tips.
Get an EEV Open (Like Magic)
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.
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 email@example.com.