Solutions may help you:
1. If the distance between the timer and remote is more than 100ft (3m), let your remote close to the timer (within 100ft/3m).
2. If the timer dial is not at ON position, turn the timer dial to ON position.
3. If the timer zones and remote are not successfully paired or paired with wrong zone numbers. ---> Timer Zone L is already paired with ZONE 1 of the remote. Timer Zone R is already paired with ZONE 2 of the remote. Pair timer zones with correct zone numbers of remote.
4. If the timer or remote battery power is low, replace with new batteries.