Relay switch location for engine compartment vent fan

[risingsun]

2015 Jeanneau 50DS.  The exhaust fan located in the engine compartment that is tied to the start switch at the help does not come on when I press the switch.  I jumped the fan, it works.  I checked the connectors on both the fan and the switch at the helm, no corrosion on either.  When I press the vent fan switch at the helm, the light comes on, it beeps and I am able to start the engine.  I tested for voltage on the connectors at the fan while the switch was pressed and saw no signal.  So, I'm assuming its a relay.  Does anyone know where the relay switch is located?  

[Don Reaves]

I can't answer your question about the location of the relay. But it's possible that the behavior is due to a thermostat that controls when the fan comes on. In my 2005 SO 35, the fan doesn't come on until the engine has been run for quite a while.

Perhaps others with the same model can provide further information.

Don

[risingsun]

Thanks for your quick reply Don.  I've tested for that too and it won't come on.  The fan would come on anytime I pressed the switch in the past and wouldn't turn off until I hit the switch again.  Also, the engine wouldn't start unless the fan switch was on.  The switch light still comes on and the engine starts but the fan doesn't.  

[Bora]

Not sure if it helps but on my 2013 469 it's under the port bunk where the bulk of the cabling is.

There's a bank of three relays, 2 of them are fused (bow thruster and windlass) the other is the engine fan.

[risingsun]

Thanks! Just saw those a couple of days ago and suspect that is where mine is too.  I’ll check it out.

[risingsun]

Found the relay near the engine battery.  But, the problem was a connector that came loose. It is located in the port aft cabin in the small space between the engine compartment and the batter compartment. Back in business.   

[risingsun]

Found the relay next to the engine battery but the problem turned out to be a loose connector.  It's located in the small hole between the battery compartment and the engine compartment.  Back in business.