Chamberlain · Garage Door Opener Serious

Door light flashes 10 times — Chamberlain Garage Door Opener — Light flashes 10x on close (safety sensor)

When the door light flashes 10 times after pressing close, the safety sensors are misaligned, obstructed, or wired wrong. Equivalent to the 1-4 LED code.

Keep using it?
Limited use only
DIY difficulty
Easy
Verified against
chamberlain.com ↗

How to fix it

  1. Verify both sensor LEDs (yellow + green) are steady.
  2. Wipe lenses clean.
  3. Re-align until green LED is rock-steady, then tighten brackets.
  4. Clear obstructions and ensure no sun is shining into the receiver.
  5. Inspect wires for damage.

Why it happens

Typical signs: Door light flashes 10 times · Door will not close from remote · Door closes only when wall button held

  • Sensor misaligned Green LED off or flickering.
  • Lens dirty Wipe both lenses.
  • Obstruction in beam path Object between sensors.
  • Sensor wire fault Pinched or cut wire.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Chamberlain safety sensor kit Common replacement
    Amazon →

More Chamberlain garage door opener codes

1-1 1-1 — Safety Sensors Obstructed/Misaligned/Disconnected 1-2 1-2 — Safety Sensor Wires Shorted or Reversed 1-3 1-3 — Door control wire issue / lock button stuck 1-4 1-4 — Safety sensors misaligned or obstructed 1-5 1-5 — Motor Drive / No RPM at Start of Movement 1-6 1-6 — Unexpected RPM After Stop at Open Position

All Chamberlain codes → All garage door opener codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: chamberlain.com.