Refrigerator Issues – Fixing Clicking Noise and Temperature Problems

refrigerator

I have a ~10 y/o (predates my purchase of the house) built-in Sub Zero 700TC. A day or two ago it started clicking every few minutes and showed codes 24 and 50, both of which reference the compressor running too much. I cleaned the coil with no effect, and the clicking noise is atypical and loud – I had never heard it before and I generally notice things like this.

Visually, it's coming from what I think is the start capacitor(?):

enter image description here

Or is that a relay too? I don't understand why a capacitor would make noise (they generally don't).

Either way, before I call a tech I want to see if I can fix it myself. Can this be a source of the clicking / issue? Also – the refrigerant line was still hot to the touch, so I feel like it's working at least somewhat?

Any ideas?

Best Answer

Our refrigerator suffered a similar problem a few months ago. The tech arrived and replaced what he called a starting relay. I had also suspected a capacitor problem, but the relay apparently precedes the circuit with the capacitor. Your description of clicking is consistent with a relay problem.