Boater13
Member
- Jun 29, 2021
- 36
- Boat Info
- 2005 Sea Ray 390, blue hull, Axiom GPS, Merc 8.1 HO, bow thruster
- Engines
- Merc 8.1 HO shafts
I have a situation when running my cabin air or heat. With the fan on high, there is only the usual air rushing noise. As I decrease the fan speed, with each lower speed the noise gets louder. Almost a screech as if the fan touches metal. When I increase speed again to max, it diappears.
Any ideas?
Any ideas?