Keypad outside the garage does not operate the door, but remotes and wall button work.

Safety first: Ensure the door area is clear while testing keypad operation.

• Replace keypad battery: Open the Merlin wireless keypad and install a new battery of the specified type.
• Reprogram keypad: Enter programming mode on the opener (press Learn button), then follow the keypad instructions to set the PIN and link it to the opener.
• Check for water damage: Inspect the keypad for signs of water ingress or corrosion. Replace if damaged.
• Verify compatibility: Confirm the keypad frequency and coding match your Merlin opener model.