Irrigation Troubleshooting Guide
Issue: Blank screen or AC OFF

• My timer has a blank screen or says AC OFF/PO OFF/PR OFF
• The outlet works with other products.

Check the fuse. Put in a spare fuse or check the current one for continuity using a fuse tester or volt/ohm meter.

Use the following procedure to replace the fuse:

1. Turn the dial to the OFF position.
2. Disconnect the common wire from the COM terminal.
3. Reinstall the fuse. If the fuse blows at this point then you have a broken timer. If the fuse does not blow proceed to step 4.
4. Turn the timer to the Auto position. If the fuse blows at this point you have a broken timer. If the fuse does not blow and the message does not go away, go to step 5.
5. Reconnect the common wire to the COM terminal.
6. Manually start station 1 and let it run for 1 minute. If the fuse blows then the problem is in the wiring or the solenoid for station 1.
7. If the fuse does not blow repeat step 6 for all of the other stations. The station where the fuse blows is the station with the short in the wiring or the solenoid.
8. If the "no power" message does not go away after reinstalling the fuse in step 4 but the fuse does not blow, verify that there is power (outlet or circuit is live) to the unit. If there is power to the unit, unplug the unit or turn the power off, remove the battery and fuse, and wait 5 minutes. Replace the battery and fuse, and restore power to the unit. You will need to reprogram the unit at this point, but the message should be gone.

Question: does the fuse blow repeatedly?

Yes, the fuse blows repeatedly

No, the fuse does not blow.