Error code 28 - Maintenance & Troubleshooting discussion in Forkliftaction's forums

Discussion:
Error code 28

I introduce the code and green key, error c28 appears.
when turning off using the red button on the keyboard, the green led remains on, it just turns off the display.
very hot ptc resistance.
there is no 24V power supply in the emergency button or in the coil of contactor k10
the curtis controller the error led does not indicate anything.
Does anyone have an idea what's going on?

Posted 22 Nov 2022 07:59
By Pedro_Martins
joined 22 Nov'22 - 2 messages
Portugal

Pedro

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After several tests and measurements, the problem was in the elevation controller (curtis). I turned off only the power part and the machine stopped having the problem of turning off and keeping the green led on and the PTC stopped heating.
Elevation motor was good because I had already tested it, as well as the emergency button.

Posted 25 Nov 2022 10:37
By Pedro_Martins
joined 22 Nov'22 - 2 messages
Portugal

Pedro

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Check pump/hydraulic contact not welded

Posted 25 Nov 2022 09:45
By Bttowmotor
joined 18 Nov'04 - 14 messages
merseyside, United Kingdom

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C28 = Emergency switch tripped

Posted 24 Nov 2022 05:30
By Forklift123
joined 11 Feb'21 - 36 messages
Netherlands

Mechanic of Forklifts, Aerial platforms & telehandlers in the Netherlands

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