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Yale MPB040-EN24T:
AL 21

Unit lifts but does not travel, shows code AL 21, thanks
  • Posted 3 Dec 2015 04:24
  • Discussion started by All Lift Tech
  • California, United States
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Comm error between handle card and traction controller. Check the reversing switch. ( belly switch).
  • Posted 16 Dec 2015 06:36
  • Reply by BREWSKI
  • Nebraska, United States
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From the forum discussions …
"nice post BLey,... yes what you said about the steering wheel going to full stop would cause these issues too. And also if the battery is weak it may not have the power to turn the wheels to full stop and create this issue as well."
swoop223, United States
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Fact of the week
The now-ubiquitous 'Keep Calm and Carry On' phrase was coined by the British government in 1939 to encourage its citizens to stay strong. Posters with the slogan were printed but never officially issued and only unearthed in 2000.