E04 on the Valley ICON 10 / ICON 1
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
POWER DROPPED BELOW LOW VOLTAGE LIMIT.
Leads to a System Power Low fault after 15 seconds. A low voltage limit set too high can cause nuisance shutdowns, so check that setting before looking at the power supply. Do not set it below the recommended value to stop the trips, because low voltage damages drive motors.
This one stops the machine.
Reading the display and looking the machine over with every door and cover closed is fine. Anything past that means power shut off and locked out at the main disconnect first, and electrical checks belong to a dealer, an electrician, or someone qualified to be in the panel.
E04 on other panels
This page is for the Valley ICON 10 / ICON 1. The same code on another panel can mean something else:
- Valley ICON 5 / ICON XPOWER DROPPED BELOW LOW VOLTAGE LIMIT
- Valley TouchPro · different meaningPower drop: power dropped below the low voltage limit
- Valley Pro / Pro2 · different meaningPower dropped below the low voltage limit
- Valley Select2 · different meaningPower dropped below the low voltage limit
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.