Norcold Refrigerator/Freezer Question

[frjeff]

I have recently begun hearing an intermittent “clicking” sound from the exterior refer door/vent. this seems to only be when the refer is on AC power.
Is this something normal or ought I be concerned?

[n2916s]

Most likely a relay as the control board switches the heat element on and off. If it is working, I wouldn't worry about it.

[Squid]

I have a 2015 norcold 8’ cubic helium frig in airstream I just bought.. 1975 27’ Overlander. It makes a whinnying noise when (I guess when the compressor comes on?) other that it works as it should. I emailed norcold today and told me to take to a “qualified tech”... anybody else have this problem?