303 on the Zimmatic 700C

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 DELAY.

A 300-series status is a delay. The machine is waiting, not faulted, and it can start on its own when the wait ends, so treat it as live. The pressure-up timer is counting. It starts when the pump starts or the valve opens. If pressure does not reach the low-pressure threshold in time, this becomes a 610 shutdown.

303 on other panels

This page is for the Zimmatic 700C. The same code on another panel can mean something else:

• Zimmatic 712C · different meaningPressure-up Delay: waiting for pressure to reach the threshold›
• 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.