Fuses for Newbies

Verna

Oops😂, Sorry, @GrandmasKid. Thanks, @ScottG....I’m trying to do too many things at the same time.....

YanniLazarus

Hello all.  My T@B320S 2020 model has 6 DC protected circuits, from circuit 1 to circuit 6 at 7.5A, 15A, 15A, 20A and 7.5A -- without any identification at all.  Way different from the reference shown posted above here (which i really appreciate because it points me in the right direction!)  anybody know, or should i go the trial and error route?  My guess is that the circuits are the same, maybe in different order with different Amps (Fan, Fridge, Light/radio/tv, Pump/lp detector, Alde/outlet/ac fan, bat. charger).  getting ready to modify my dometic fan and wanted to pull the right fuse, well, and am curious about the rest!

Sharon_is_SAM

@YanniLazarus - https://tab-rv.vanillacommunity.com/discussion/8400/inverter-question/p1

Although the linked post title is about an inverter, the second page talks about the converter box labels for a 2019.  You may find this helpful and I suggest that you test the circuits to confirm.  I could not find any reference to the 2020 converter box.

YanniLazarus

Sharon_is_SAM said:

@YanniLazarus - https://tab-rv.vanillacommunity.com/discussion/8400/inverter-question/p1

Although the linked post title is about an inverter, the second page talks about the converter box labels for a 2019.  You may find this helpful and I suggest that you test the circuits to confirm.  I could not find any reference to the 2020 converter box.

Wow. That is exactly the info I was looking for!   Hard to understand why some model years have clear circuit labels and some don't,  but now I know.  Soooo helpful. Thanks. 

ScottG

In my case. I have clear labels, but they were not 100% correct. Always good to check yourself!

JanandDave

Hi Folks,

@ScottG,  Some time ago I found the following thread on an English RV forum with a discussion on the Alde 3010s and 3020s. It would seem we have one more fuse to add to the list, though replacing it is not for the squeamish. When blown, it can be responsible for a dead control panel. It is also much cheaper than a new control board.

https://www.motorhomefun.co.uk/forum/threads/alde-3010-blank-control-panel-solution-fix.154521/

The 3010 has a one time use 194 degree fahrenheit thermal fuse on the circuit board, and the 3020 supposedly has a resettable one (more like a circuit breaker). The author of the thread and some ensuing comments explain it well. Readily available on Amazon, the following is but one example.  I can attest that our 2016 3010 has this fuse, or one very similar.

https://smile.amazon.com/Connector-Terminal-Microtemp-Thermal-Cut-Off/dp/B089NF5199/ref=sr_1_46?dchild=1&keywords=195+thermal+fuse&qid=1598378709&sr=8-46

I will leave it to you to decide whether or not to add this info to the PDF on the 320 fuses.

Thanks, Dave

jgram2

@ChanW is that the one you found or is it yet Another! fuse?

JanandDave

Hi @jgram2,

Sorry, guess this is old news. I wasn't the only one to find that fuse.

@db_cooper had already posted a link to it over a year ago.  Oops    

jgram2

No apologies please-I’m never surprised to hear about an “unknown “ fuse. Plus, your post serves as a bump for it. I rarely remember the source anyway, so glad you found db’s.

ScottG

@JanandDave, I do recall a discussion about the unknown "fuse." I think it might have been @ChanW who made the original discovery and repair.

Fuses for Newbies was not my document, but perhaps I can add a link to the aforementioned discussion in the interest of completeness! 

pthomas745

Here is ChanW's thread with the "secret fuses" listed. 

https://tab-rv.vanillacommunity.com/discussion/4197/found-a-fix-for-no-alde-heat-when-all-fuses-are-good/p1

JanandDave

Thanks for that link, and thanks to @ChanW and the other folks in that tread, too. Guess that's where I got the bookmark to keep for future reference. 

ChanW

Heh! Yeah, that's the blown fuse I lucked upon.

I think that that Brit does a way better job of coaching a person through replacing it than I!

But I still think the "snip out the old one and attach the new one to its leads" is the best plan. And an even better plan is replacing it with a resettable fuse.

That said, I haven't had a problem with the replacement (as yet!)

db_cooper

@ChanW, no problems with my replacement fuse yet either, it's lasted longer than the original.  Better go find some wood to knock on! Or just go replace it with one of the other 10 or 20 I bought.

ChanW

@db_cooper, Yep, knock wood!
I'm hoping to hear about a resettable replacement before I need to do it again...