Er04 on the Valley Precision Corner
An independent guide from FixMyPivot, not from the manufacturer. Brand and panel names are here only so you can find your own equipment.
What it means
Software version.
The last regular drive unit and the steerable drive unit are running different software versions.
Call a technician for this one, rather than opening the panel.
Most corner arm faults need a technician. Knowing the code helps the technician when you call. If more than one fault is active, the display shows the lowest numbered code first, and the next one shows once that one is cleared. FixMyPivot does not troubleshoot corner arms.
This is what Er04 means on the Valley Precision Corner. On a different panel it can mean something else. Wrong panel? Pick another Valley panel.
Safety
Center pivots run on high voltage and heavy moving machinery. Shut off and lock out power at the main disconnect before you open a panel or touch anything electrical. If you are not sure, stop and call your local pivot dealer or a licensed electrician. These pages tell you what a code means. They do not replace a qualified technician, and the safety instructions that came with your equipment come first.
FixMyPivot is an independent troubleshooting service. It is not affiliated with, authorized by, or sponsored by any equipment manufacturer. All brand, panel and product names are trademarks of their owners and are used here only to identify the equipment a code appears on. This information is general, is provided as is without warranty, and may not match the software version on your panel. Use of these pages is subject to our Terms of Service.