Door will not open or close from any remote, but wall button works normally.

Safety first: Keep clear of the door while testing remotes.

• Replace remote battery: Open the Merlin remote (e.g., E960/E970 series) and install a new coin cell of the specified type, observing polarity.
• Reprogram remote: Press and release the "Learn" or "Code" button on the opener. Within 30 seconds, press the desired button on the remote until the opener light flashes or beeps. Test operation.
• Check compatibility: Ensure the remote frequency and coding (e.g., Merlin Security+ 433 MHz) match the opener model. Incompatible remotes will not program.
• Reduce interference: Move or turn off nearby devices such as LED drivers, Wi‑Fi routers, or metal shelving near the opener antenna and retest.