This thread is an offshoot (or result of) the thread Progressive EMS-HW50C Hum.
First, a shoutout to Jomani for the link to Amazon and the replacement contactor. (Thanks!)
Progressive replaced the buzzing EMS (the entire thing, including a new display) under warranty and did not want the old unit back. Since I knew how to get the replacement contactor, I figured why not repair the EMS and have a spare?
Replacing the contactor was easy. It's held in place by two screws and nuts. Just be sure to take copious pictures of how the wires are connected and it's not difficult at all. Hardest part was wrestling those thick wires in such a small space. In retrospect ferrules would have made the job much easier due to the stranded wire.
I cut up an old extension cord that I didn't need and created a non-weatherproof external unit so I can test someone else's pedestal / unit.
I also took apart the buzzing contactor to see what's inside. To my surprise it is very easy to get to the physical contacts--they are right under the cover. There are tiny springs in there (that I managed to not lose) but it's possible to unscrew the bottom contact and inspect it. Makes me wonder if a squirt of DEOXIT would have fixed the buzzing problem.
Just gee whiz info...
Howard
P.S. The link to the contactor on Amazon: https://www.amazon.com/dp/B07S2WM24T
First, a shoutout to Jomani for the link to Amazon and the replacement contactor. (Thanks!)
Progressive replaced the buzzing EMS (the entire thing, including a new display) under warranty and did not want the old unit back. Since I knew how to get the replacement contactor, I figured why not repair the EMS and have a spare?
Replacing the contactor was easy. It's held in place by two screws and nuts. Just be sure to take copious pictures of how the wires are connected and it's not difficult at all. Hardest part was wrestling those thick wires in such a small space. In retrospect ferrules would have made the job much easier due to the stranded wire.
I cut up an old extension cord that I didn't need and created a non-weatherproof external unit so I can test someone else's pedestal / unit.
I also took apart the buzzing contactor to see what's inside. To my surprise it is very easy to get to the physical contacts--they are right under the cover. There are tiny springs in there (that I managed to not lose) but it's possible to unscrew the bottom contact and inspect it. Makes me wonder if a squirt of DEOXIT would have fixed the buzzing problem.
Just gee whiz info...
Howard
P.S. The link to the contactor on Amazon: https://www.amazon.com/dp/B07S2WM24T
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