• Module wires not properly connected to controller terminals.
• Wires from the Solar Sync module to the controller have been severed.
• Is the Solar Sync module installed on a controller that has the SOLAR SYNC dial position? If so, remove the module.

The Solar Sync has a reset procedure that can be performed if an error message is displayed.

1. Remove the battery from the back of the Solar Sync module
2. Push and hold all three buttons (plus, minus & arrow) on the Solar Sync module
3. Release all three buttons after 5 seconds
4. All the segments should show up on the module telling you the reset has taken
5. When the time of day appears, reprogram the module.

1. Replace the battery