Chamberlain MR650EVO, MR850EVO operating instructions Diagnostic Down

DIAGNOSTIC	UP	DOWN	SYMPTOM
CODE	ARROW	ARROW

POSSIBLE CAUSE POSSIBLE RESOLUTON

3-3	3 FLASHES	3 FLASHES	The garage door opener fails to
			operate and the battery LED is
			constantly flashing green
4-1	4 FLASHES	1 FLASH	Door is closing, stops and
			reverses
4-2	4 FLASHES	2 FLASHES	The door stops while opening
			for no apparent reason
4-3	4 FLASHES	3 FLASHES	The door reverses for no
			apparent reason or after touching
			the floor

Battery LED flashing green, charging circuit stops and starts to drain causing battery charging status

Obstruction, binding or sticking door

Obstruction, binding or sticking

door

Obstruction, binding or sticking

door

Recharge Battery, contact service centre

Remove obstruction, service door.

Remove obstruction, service door.

Reset limits & force, service door.

17

4-4	4 FLASHES	4 FLASHES	The door reverses for no apparent	Obstruction, binding or sticking
				door
			reason or after touching the floor
4-5	4 FLASHES	5 FLASHES	The opener runs approximately	Communication error to travel
			150-200 mm and stops and/or	module
			reverses
4-6	4 FLASHES	6 FLASHES	The door reverses for no apparent	Safety sensors were temporarily
			reason while travelling down	obstructed or misaligned

These are additional troubleshooting issues that will not show up in the diagnostic codes:

Reset limits & force, service door.

Reset limits & force contact service centre

Remove obstruction, or realign sensors

My garage door opener beeps every 30 seconds:

Refer to Battery Status LED section.

My remote control will not activate the door:

*Verify the Lock feature is not activated on the door control.

*Reprogram the remote control.

*If the remote control will still not activate the door check the diagnostic codes to ensure the garage door opener is working properly.

*Ensure the antenna wire is hanging down from the garage door opener.

My garage door opener light(s) will not turn off when the door is open:

The garage door opener is equipped with a feature that turns the light on when the safety reversing sensors have been obstructed or when the motion sensor on the door control detects movement in the garage. These features can be disabled using the door control, refer to the Door Control section.

My neighbour's remote control opens my garage door:

Erase the memory from your garage door opener and reprogram the remote control(s).