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Post by captbillh on Sept 9, 2019 23:24:27 GMT
I have a 2015 409. After 330 eng hours the ventilating fan became rather noisy. I stated up the engine to pull into mooring field. The bow thruster would not "activate". The next morning when starting the engine the charging light and alarm came on and stayed lite. The alternator was not charging. It tested ok. The 7.5 Amp fuse blew that feeds the blower motor and the 2 permissive relays for the bow thruster and the windlass. The circuit did not have a low resistance but the fuse blew again.
The blower motor installed by the factory was a Jabsco 6.5 Amp that requires a 10 Amp fuse. When I replaced the fuse with a 10 Amp everything worked. The schematics in the manual details most of the wiring but not the interface between the Yanmar panel and engine/alternator wiring to really explain the reaction to the blown fuse. The feed wires for the key relay located on the port side of the engine is not shown on the schematics.
The replacement fan is a Plastimo 5 Amp model. The Jabsco 6.5 Amp fan was used on a 409 built in March 2014 also.
The Jeanneau 2019 51 and the Beneteau 2019 51.1 model have the Plastimo 5 Amp fans installed.
Does anyone have the schematic even home made? i have not received any response from the dealer nor Jeanneau America re. this.
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Post by jlasail on Sept 10, 2019 1:42:45 GMT
Hi Bill
This is Jean-Luc. Something similar happened to me about 2 years ago and I discovered that the fuse that feeds/protects the fan also feeds the primary coil of the alternator( same circuit). Meaning no charging if the fuse has blown out because of the fan.
I ended up replacing the fan and everything has been fine since.
Hope it helps.
Jl
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Post by captbillh on Sept 10, 2019 13:07:42 GMT
HI, Jean-Luc so the original motor was the 6.5 Amp Jabsco? The replacement oe was the Plastimo 5 Amp?
I did not see where the purple feed to the relay that goes to the Christec Battery Charge Isolation unit goes to the Yanmar instrument panel.
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Post by sailingabe41ds on Apr 3, 2021 5:36:09 GMT
This is an older thread but this is exactly what happened to me today. I went to turn on the engine and the engine panel went crazy buzzing and shutting off. The stock panel that monitors the battery also went off showing low voltage when in fact it was not low..
I was able to start...but I could see that the battery was not getting charged (I also have a battery monitoring system). Took the alternator and took it to the local Yanmar dealer to make sure they order an identical replacement.
Then I started to think....the blower fan was not working when I pressed the ignition button nor when I started the motor telling me there was something more. I found the 7.5 amp fuse that fed the blower and replaced it. After putting back the alternator, everything worked well. As stated by jlasail the FUSE THE FEEDS THE BLOWER FEEDS THE ALTERNATOR COIL. Lost a day of sailing to islands but learned something.
The first time I encountered somethin similar in a 1969 E Type Jaguar. If the battery no charge light bulb burned out in the dash...the alternator primary coil would loose its current. I guess the French and English went to the same electrical engineering school. Fifty years later you think they should have learned to mix circuits. They should have gone to Germany.
Abe
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Post by moonshadow on Apr 3, 2021 12:09:47 GMT
Where is this fuse actually located? In the 12v panel? Behind the engine panel? Sounds like one of those bits of knowledge that is great to have.
Thanks.
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Post by zaphod on Apr 3, 2021 15:44:31 GMT
This is an older thread but this is exactly what happened to me today. I went to turn on the engine and the engine panel went crazy buzzing and shutting off. The stock panel that monitors the battery also went off showing low voltage when in fact it was not low.. I was able to start...but I could see that the battery was not getting charged (I also have a battery monitoring system). Took the alternator and took it to the local Yanmar dealer to make sure they order an identical replacement. Then I started to think....the blower fan was not working when I pressed the ignition button nor when I started the motor telling me there was something more. I found the 7.5 amp fuse that fed the blower and replaced it. After putting back the alternator, everything worked well. As stated by jlasail the FUSE THE FEEDS THE BLOWER FEEDS THE ALTERNATOR COIL. Lost a day of sailing to islands but learned something. The first time I encountered somethin similar in a 1969 E Type Jaguar. If the battery no charge light bulb burned out in the dash...the alternator primary coil would loose its current. I guess the French and English went to the same electrical engineering school. Fifty years later you think they should have learned to mix circuits. They should have gone to Germany. Abe Have you ever dealt with phantom electrical issues on a German car? I have! I can assure you the Germans are no better! |
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Post by Damen af Kungsholmen on Apr 3, 2021 18:46:46 GMT
Where is this fuse actually located? Need to know if I get the same problem.
Škoda, Simply Clever.
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Post by sailingabe41ds on Apr 4, 2021 3:06:21 GMT
Hi..
That fuse box is located in the aft berth starboard side in the smaller compartment adjacent to the battery compartment where the breakers and the big battery switches are. There is a black rectangular fuse box that holds 6? fuses and has a clear plastic cover ..it is about 6 inches long by 1 inch wide. The first fuse is a 1amp....second one is the magic 7.5amp fuse, only 3 of the 6 fuse slots are being used. This in the Jeanneau 41DS. I also replaced it with a 10amp fuse since the blower uses 6.5 amps and most likely will take out the fuse when you least want it to happen.
Abe
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Post by sunrise4 on Apr 4, 2021 3:27:46 GMT
Thanks Abe for the great insight!
I have seen this fuse box and never knew what it was for... (along with some others in the same compartment...). It's a shame that these are not labeled from the factory.
Thanks again!
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Post by Damen af Kungsholmen on Apr 4, 2021 18:30:46 GMT
Many thanks Abe :-)
I have replaced all fuses to ShoBlo.
This is a magic standard fuse. It illuminate when its blowned out. Its build in LED in the fuse, and its two of them so you don´t need to know the polarity. It save so much time and frustration just to see the fuse and it tells "please, replace me".
Sunrise 4, I agree that it’s a shame that it’s not labeled.
:-Dan
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Post by sailingabe41ds on Apr 4, 2021 21:36:43 GMT
Those led fuses are a great idea. But keep in mind in this case unless you kept the switch on to complete the circuit the fuse would not light up when blown. The tendency would have been to shut off the ignition when all the alarms were going off thus no power to the fuse.
Abe
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