The switch could be wearing out from fatigue and may need to be replaced, but it may be worth troubleshooting the following:
The push plate may have shifted in
its mounting box, not allowing for a good switch contact, readjust the push
plate.
Check the wiring for broken wires and secure wiring connections at the switch, operator, and wiring in between. Make sure the wiring is terminated at the switch on the NO and COM terminals. The NC terminal should not be used.
The activation may be wired into an access control system which is designed to block signals to the operator after hours...the access control system should be checked.
If it is wireless activation, the
transmitter battery may need replacement or the receiver is having difficulty
receiving the transmitter signals.
Make sure the transmitter is not installed in a metal box, such as a double gang electric box.
Check that the wireless receiver has both dip switches in the "off" position (toward 1 and 2), has power, and is working properly.
Finally, there could be interference from another source of radio signal, such as WiFi. Try to re-position the wireless receiver, making sure the green antenna is out of any metal enclosure, to get a better signal from the transmitter.
DISCLAIMER:
INFORMATION PROVIDED THROUGH THIS SITE IS PROVIDED TO YOU AS IS WITHOUT ANY EXPRESS REPRESENTATIONS OR WARRANTIES
OF ANY KIND, AND WE MAKE NO REPRESENTATION OR WARRANTY THAT THIS SITE(OR ANY INFORMATION PROVIDED IN RESPONSE TO
YOUR INQUIRY), WILL BE ACCURATE, COMPLETE, OR ERROR-FREE.
YOU AGREE THAT YOU MUST EVALUATE ALL INFORMATION AND RESPONSES, AND THAT YOU BEAR ALL RISKS ASSOCIATED WITH, THE
USE OF THIS SITE, INCLUDING ANY RELIANCE ON THE ACCURACY,COMPLETENESS, OR USEFULNESS OF ANY INFORMATION OR MATERIALS
MADE AVAILABLE THROUGH THIS SITE.