Contactor loud buzzing/vibration Failure?

[homebrewdude76]

My system has been running for years. This last brew day my primary boil circuit when turned out had a loud vibrating/hum noise coming from the contactor.
My other circuits were fine, so I continued to brew.
The noise was the same even when I had no load on the circuit.

Is this as simple as the contactor failed, or something else I should look at?

 

[DBhomebrew]

Sounds like a contactor. Corrosion impeding solid contact. It'll get worse and worse until it doesn't work at all.

 

[homebrewdude76]

Well 3 weeks ago it worked fine, and now with the buzzing it doesn't work at all...

 

[Bobby_M]

Contactors are relatively cheap so it's always a good idea to have a spare around. I have a spare contactor and SSR stored inside my panel so when I open it up to troubleshoot, I find a very convenient surprise.

 

[homebrewdude76]

Same with me, I have spares.
Just wanted to confirm before I start tearing things apart.

Contactors are relatively cheap so it's always a good idea to have a spare around. I have a spare contactor and SSR stored inside my panel so when I open it up to troubleshoot, I find a very convenient surprise.