Crown RC5535-35AC No readout on display - Maintenance & Troubleshooting discussion in Forkliftaction's forums

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Crown RC5535-35AC No readout on display

This is.a Crown RC5535-35 Both drive and hydraulic are AC and unit is equipped with an factory installed extra infotainment display that has been inoperable for years. The battery was replaced with a new one 6 months ago and tests good. While being used unit died and a code 733 was reported by operator. Upon arrival unit will turn on and engage K2 relay but will not pull either contactor. The LCD section of the display is also completely blank (so no access to diagnostics, etc), but the BDI and all icons on display work. I replaced Access 7 as CAN readings were high but still have the issue. I am however getting a different flash code from the access 7 itself now. So my first question would be, is the flash code on the Access 7 the same as the unit fault codes? As I can't find any answer in the manual.

Posted 4 Feb 2025 10:40
By Mlift
joined 26 Jul'18 - 6 messages
Ohio, United States

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Did you flash software after installing the new access 7? Typically if the screen does not display anything it means one or more of the modules has the wrong software version and are not compatible.
If that is not the issue, then either the access 2 or 3 is bad depending on the access 7 flash code.
723 - Access 3
751 - Access 2
The only other thought I have is possibly the can circuit is grounding to the truck frame causing a communication issue.

But yes the flash code is the same. For 751 it will flash 7 fast, pause, 5 fast, pause 1, pause

Posted 4 Feb 2025 21:54
Modified 4 Feb 2025 21:56 by poster
By DyslexicNerd_01
joined 13 Jun'23 - 219 messages
Wisconsin, United States

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