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12V Panel light ***BLINKING****????

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Black Diamond View Drop Down
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    Posted: 05 September 2017 at 18:42
Normally when you flip on any of the 12V panel switches,  the light on the button will glow solid red.   I had an interesting experience yesterday.     All of a sudden my autopilot died,   the error message said "pilot needs setup" and the light on the navigation electronics breaker is blinking red.  Not solid,  but blinking steadily.

Does anyone know what this means?   Nothing in the 575 owners manual,  the circuit diagrams/documentation or any other source tells me what this might mean.    I can't see how the flashing is driven by the B&G electronics (it just a switch),  and the fuses are obviously good because the other electronics (including the chartplotter and fluxgate compass) are working fine.

See dropbox link to videos:

https://www.dropbox.com/sh/knjkabxzk95yunu/AAAo-82odtI_0HbD9e-Flmp_a?dl=0

This is a new boat,   commissioned in July and still shaking out little problems.  This is not a little problem, however (autopilot down)...
Rick
S/V Black Diamond
Hanse 575 #161
Newport, RI
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wayne's World Quote  Post ReplyReply Direct Link To This Post Posted: 05 September 2017 at 19:18
Rick,

A flashing red light on the 12V panel indicates a fuse is blown, Which switch is blinking? 

If you pull down the 12V panel (it is hinged at the bottom- press hard at the top and the top should pop out) you will find multi layers of blade fuses -some the standard size and other the mini size. I think if you test them all with a multi meter set to resistance touched on the two contacts on the top of each fuse you will find one that is blown. Note that the placement of the fuses is relation to the switch can be confusing - just test them all.  
Wayne W
Cruising, currently in the Mediterranean.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote S&J Quote  Post ReplyReply Direct Link To This Post Posted: 05 September 2017 at 20:28
I can confirm that a flashing status light indicates a blown fuse. Don't be confused by other instruments from the same switch still working. I recently blew the fuse on the cockpit table light and got the flashing light against the master light switch although most lights were still working. I think there can be multiple fuses in the wiring controlled by a single switch.
H385 #351 Ningaloo now cruising the Baltic
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Black Diamond Quote  Post ReplyReply Direct Link To This Post Posted: 05 September 2017 at 21:31
Bizarre.   You would think something else would occur.    I'll replace the fuse, but you would think the owners manual or some documentation would have mentioned this..  

Rick

Rick
S/V Black Diamond
Hanse 575 #161
Newport, RI
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 06 September 2017 at 14:46
Rick,
 
I assume that you have the Würth Panel, which in essence is a glorified collection of switches. The autopilot has a 15 A fuse. I assume that the third switch from the bottom is blinking. This switch controls 3 15 A fuses, one for the nav electronics and one for the Autopilot. If you open the panel you see the row of fuses . It starts with a 10 A followed by 4 5 Amp fuses. These are followed by 3 15 amp fuses, the 1st one is for nav instruments ,the 2nd  is for chartplotter AIS, the 3rd one is the one for the Autopilot!
Or you take the 2nd one from the back. When you do replace the fuse, by all meams switch all power off through the main batt switch. Be very careful not to loose the fuse !  If this happens get it out before you switch power on again. A new panel costs > 1000 €.
 
If you PM me, I can send you the fuse plans for the Würth Panel.
 
Fair winds !
Frank
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Black Diamond Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 00:58
Fixed the immediate problem.    Autopilot is functional again.      Frank was dead-on.  The fuse supporting the third wire was blown.   Pop in a 15AMP fuse and it was back up.

However.....

For high amp loads (like bow and stern thrusters) the panel acts as a relay, switching on the actual flow of power coming from a source other than the panel.    In my case, the actual power going to the autohelm controller was coming from the wurth panel and is therefore limited to the 15AMP fuse that blew.  

The B&G box for the autohelm controller has a 30AMP fuse in it.   My concern is that in heavy rolling seas (for example) it will need more than 15AMPS and blow out again. 

So.. do any of you have a similar setup?  Or were your autohelms wired differently?   If similar,  have you had any issues such as the one above?




Edited by Black Diamond - 08 September 2017 at 01:00
Rick
S/V Black Diamond
Hanse 575 #161
Newport, RI
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wayne's World Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 08:02
Rick,

We had the same fuse blow on Hope about 2 weeks after leaving the Hanse shipyard in Griefswald when we were in Sweden. The cause was that the steering cables were adjusted incorrectly by the yard. The cable on the stbd side was fitted so that when on the steering was full over in one direction the chain/cable fitting was being pulled into the steering gear cogs before reaching the autopilot "stop". The AP continued to try to turn further but was restricted by the fitting being crushed in the cogs, the increase in amps would have caused the fuse to blow. I did not know the cause of the fuse blowing until about 2 days later when the steering cable to chain bottle screw on the port steering came completely undone and we lost steering on the port helm. 

To access the steering area you need to remove some vinyl panels at the aft end of the aft cabin on either side. The remove a timber panel and you can then see the steering and if you are flexible enough and slim enough you can slide into this aft void, which I might add is large and virtually unused. I would suggest any 575 owner should check the steering bottle screws on both sides and make sure the locking bolts are tight. I also applied "Loctite" to the threads. Whilst you are there have someone on at the helm turn the steering full lock from side to side to make sure the fittings are not pulled into the cogs. Check this on both sides. Since fixing this steering issue we have not had the AP fuse blow.

 If you are keen to align your steering wheels so they are in the same position relative to each other you can do this by undoing one bottle screw and take the chain off the cogs and rotate that side wheel so it is aligned with the other wheel and then refit the chain, tension, apply Loctite and tighten the locking nuts. Then recheck the steering by going full lock to lock again. You may not be able to get the wheel 100% aligned but at least 95%.

          
Wayne W
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2017 at 10:34
Rick,
 
I have replaced all the cheapo car melt fuses on my Würth Panel with automatic resettable fuses from Conrad Electronics. Learned it the hard was, when I lost a fuse inside the electronics and blew the Würth Panel. Still don't understand why Hanse is using yesteryears chevy technology on their boatsAngry
 
 
Now it takes only seconds to restore the power :)
 
fair winds!
 
 
Frank
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Black Diamond Quote  Post ReplyReply Direct Link To This Post Posted: 11 September 2017 at 19:39
I *LIKE* this idea...    can you actually reach in and reset it,  or do you still need to remove the fuse (now circuit breaker)?    Tight quarters in there...

Rick

Rick
S/V Black Diamond
Hanse 575 #161
Newport, RI
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 11 September 2017 at 20:58
Hi Rick,

no need to remove the fuse breaker once you have slotted it in. Just push the little red button back and "presto" power is on again.

Best regards to beautiful RI


Frank
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