"Sam, funny you should raise this question. We were hearing the same type noise about two months ago only hearing it at night. We were tied to a dock so no impact from anchor or windlass. It reminded me of the type of noise a small servo type motor…"
"i should have added more clarity / information. This happens totally independent from the air conditioner systems. It is not the condensate pumps. The sound has happened at a quiet anchorage with no 115 volt power ( no shore power and …"
"FYI the power to the pump comes thru the AC control brain mounted near the AC unit. Power still goes to the pump if the unit is turned off at the thermastat but not if you turn off the circuit breaker."
"If you have air/heat on the boat and the unit is on, it can be the condensation pump for the air conditioner. If not, not sure. If you do have air, then turn of air and seer if buzzing stops. And this is a sign of a new condensation pump.
OK, another strange one.When all is quiet I her an intermitent buzz emanating from somewhere forward, It goes "buzz, buzz" then quiet. Happens at about forty second intervals (but not consistent). Sounds like an electrical sound, but am very uncertain.The boat is a 2008 43, with thruster and windlass. It sounds like it comes from the windlass area or the port side in the vberth.The admiral is developing a tick.Ideas?SamLonghawkSee More