Wall push button does not operate the opener; E7 flashes when the button is pressed, but remotes still work.

Safety first: Isolate mains power before handling low‑voltage wiring inside the opener.

• Inspect wall button: Remove the wall station or push button from the wall. Check for broken terminals, corrosion, or loose screws. Tighten or replace as needed.
• Test continuity: With power OFF, disconnect the two wall button wires at the opener. Use a multimeter to check continuity between the two wires while pressing the button. You should see near‑zero ohms when pressed. If not, the button or cable is faulty.
• Check for shorts: Inspect the cable run for staples or screws piercing the insulation. Repair or replace damaged cable.
• Temporary jumper test: At the opener, briefly bridge the wall button terminals with a small insulated wire. If the door operates normally, the opener is fine and the fault is in the wall control or wiring.
• Replace wall station: If the cable tests good but the button does not show continuity, replace the Cardale wall control / push button.