Lately, our garage door opener has been acting up. We have a rolling
metal door, and it goes up just fine. But when we try and lower the
door, the opener unit flashes as if there's an obstruction and the
door reverses direction and goes back up. We can find no obstruction.
If we push and hold the wall-mounted button, it will lower the door
all the way, but only if we hold the button for the duration of the
lowering. Any suggestions on how to fix this problem?
That sounds like a problem with the photocell safety circuit.
Check the photocell safety circuit for alignment, dirty lenses, etc.
When our house was new, we had a problem in the summer with late
afternoon sun blinding the receiver. Had to have somebody stand and
shadow the receiver in order to close the door. Problem went away when
the olive tree in the front yard grew enough to block the late
afternoon summer sun.
Is the door properly balanced? Disconnect it from the opener and pull the
door so that it's halfway down. If it doesn't stay there, it isn't balanced
and the opener will have a hard time opening or closing the door, depending
on which way the door is out of balance. Call a garage door co. to fix this.
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