Discussion:
Code 27

Have a code 27. Checked voltage to the red wire on connector PB1 (crown wire ca401-1). +24.7. Battery is a little low but still in range. Installed reman control card and same problem. What am I missing. Contactor do pickup and than drop out. Slight noise from the transistor before contactors drop out.
  • Posted 17 Jul 2020 04:01
  • By Brad
  • joined 17 Jul'20 - 3 messages
  • South Dakota, United States
Showing items 1 - 4 of 4 results.
Currently fighting a truck with this code getting 25v to card only drops 0.010V then codes the 27 did the resistor update and a new transistor brake releases contactors pull in soon as pot is in range to move codes 27 swapped control card and 402-1 wire just to be sure it had good contact. At a loss here
  • Posted 12 Dec 2024 04:22
  • By Jack_Wishin
  • joined 12 Dec'24 - 1 message
  • Indiana, United States
This is a good one. Battery is good, connections all are good. Good voltages to the card and to contactors. Contactors pick-up. Tried new card and same problem. Had replaced the transistor prior to this problem. Did have noise out of the transistor but no output to the motor. Replaced the transistor and problem gone. Installed old control card and still is working. Not sure why. Went through the panel one more time to make sure the was no wiring or connection problems. Unit is still working great. Not sure how this could give a code 27.
  • Posted 4 Aug 2020 02:12
  • By Brad
  • joined 17 Jul'20 - 3 messages
  • South Dakota, United States
Code can pop up when control card supply voltage drops below 10v. Bad connection or connector at CA402-1. Battery could have bad cells or drops considerably under load. Poor forward or reverse switches?
  • Posted 31 Jul 2020 02:30
  • By ForkLiftFred
  • joined 2 Aug'18 - 24 messages
  • New Hampshire, United States
Fix it
Whats the battery voltage when lifting?
  • Posted 24 Jul 2020 19:14
  • By techno_nz
  • joined 9 Aug'13 - 138 messages
  • Canterbury, New Zealand

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.

Fact of the week
In 1923, French tennis player René Lacoste was promised a crocodile leather suitcase by his captain if he won his next match. He lost the match but won the nickname "the crocodile" which he had sown onto his tennis attire. Ten years later he launched the first polo shirt and Lacoste, the first brand to feature a logo on its clothing.
Global Industry News
edition #1242 - 7 August 2025
In this week’s Forkliftaction News , we take a closer look at the main theme coming out of the recent CeMAT Australia event in Sydney: automation; why some are holding back and why not everyone will automate... Continue reading
Upcoming industry events …
October 15-16, 2025 - Las Vegas, United States
November 12-13, 2025 - London, United Kingdom
November 13-14, 2025 - Berlin, Germany
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025
Fact of the week
In 1923, French tennis player René Lacoste was promised a crocodile leather suitcase by his captain if he won his next match. He lost the match but won the nickname "the crocodile" which he had sown onto his tennis attire. Ten years later he launched the first polo shirt and Lacoste, the first brand to feature a logo on its clothing.