Crown 50FCQUAD249:
Code 47

Lift jerks and throws a code 47. The book I have for this model does not indicate a code 47. It has codes 46 and 48, but no 47. When the truck jerks it shuts everything down and throws that code 47. You can key off and back on and clear it and have all operations functional, but it will eventually do the same thing again. It can happen at any point in travel. I pulled the floor cover up and watched the traction motor when this happens and a have a good amount of sparks around the brushes.

I have found a few loose connections that I have tightened up thinking that may have been the issue, but it still happens. I did notice that the traction motor brushes are close to needing changed out.

any ideas?
  • Posted 14 Jan 2020 05:21
  • Discussion started by Busch
  • United States
Never assume, assumptions are the mother of all ****ups. -Busch-
Showing items 1 - 2 of 2 results.
Awesome, thanks for the info swoop. I did find a loose connection on the 2REC. And for good measure I tested forward/reverse contactor coils and replaced the contact tips. After doing so I have not had an issue with it.
  • Posted 15 Jan 2020 04:48
  • Reply by Busch
  • United States
Never assume, assumptions are the mother of all ****ups. -Busch-
2REC fails to turn on
F and R contactors PMT trip (open momentarily, close, and open again)
Note: Event code -47 can also result from F and R contact tips bouncing open during travel (i.e. Driving over large bumps or rough dock plates).
- check hardware/wiring for loose connections
- check for loose connection between 1REC and 1C (capacitor) in traction circuit
- check for loose connection between PCZT-10 (white/red wire) to 2REC
- Replace 2REC
  • Posted 14 Jan 2020 21:51
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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