Discussion:
No travel!

When attempting to go either fwd. or rev. the unit travels an inch or two and then stops and fault codes 66 or 68 appear.
Any ideas out there?
  • Posted 14 Sep 2023 07:49
  • By DaveSr
  • joined 2 Mar'12 - 53 messages
  • California, United States
Never too old or too experienced to learn more.
Showing items 1 - 5 of 5 results.
Thanks again!
  • Posted 15 Sep 2023 04:29
  • By DaveSr
  • joined 2 Mar'12 - 53 messages
  • California, United States
Never too old or too experienced to learn more.
That could be the case. I would test the battery voltage at the positive terminal on each card first. One of the codes makes me think there may be a bad connection between the main controller and slave controller.
  • Posted 15 Sep 2023 04:11
  • By DyslexicNerd_01
  • joined 13 Jun'23 - 220 messages
  • Wisconsin, United States
In your opinion if all the cables seem secure and the battery is amply charged, is there a possibility that one of the "traction controllers" is faulty?
  • Posted 15 Sep 2023 02:53
  • By DaveSr
  • joined 2 Mar'12 - 53 messages
  • California, United States
Never too old or too experienced to learn more.
Thanks!
  • Posted 14 Sep 2023 22:50
  • By DaveSr
  • joined 2 Mar'12 - 53 messages
  • California, United States
Never too old or too experienced to learn more.
Code -66: Field FET current exceeded expected current limit.

Code -68: PMT enable signal from slave controller (MRC2) to master controller (MRC1) dropped below 5 volts.

Just by looking at the codes, it seems there may be a short in the system. I would check motor cables for tightness and ensure battery voltages are correct on both the main and slave controllers.
  • Posted 14 Sep 2023 10:16
  • By DyslexicNerd_01
  • joined 13 Jun'23 - 220 messages
  • Wisconsin, United States

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

UN Forklift FBRS15KQZ2
HANGZHOU, Zhejiang, China
New - Sale
Wellwit WMF1000
Shenzhen, Guangdong, China
New - Sale
USD50,000
Global Industry News
edition #1247 - 11 September 2025
In what may prove to be a sign of things to come, Canadian materials handling equipment lithium-ion battery manufacturer, UgoWork, has announced battery assembly for some forklifts bound for the North American domestic market will now be done in the US. See the story for full details... Continue reading
Latest job alerts …
Danville, IL, United States
Fact of the week
At the opening ceremony of the Sydney Harbour Bridge in 1932, marching bands were instructed to walk out of step as they crossed the bridge. This unusual directive was given as a precaution due to concerns about the bridge's structural integrity during its early use.