303 on the Zimmatic 712C

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

Pressure-up Delay: waiting for pressure to reach the threshold.

A 300-series status is a delay or a timer counting down. It is not a fault. The machine is waiting and goes on its own once pressure comes up. If pressure does not come up within the pressure-up limit, this becomes a 610 shutdown. Treat the machine as live, because it can start without anyone at the panel.

303 on other panels

This page is for the Zimmatic 712C. The same code on another panel can mean something else:

• Zimmatic 700C · different meaningPRESSURE DELAY›
• Zimmatic FieldNET Pivot Control · different meaningPressure Pre-delay: waiting for water pressure to come up before it starts›

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.