03-09-2011, 10:48 AM
Hi,
I installed a LiftMaster sub 300 system over five years ago and they have operated trouble free for all this time.
Recently I have changed the motor connections over to give the single opening leaf to the opposite gate (even wear). This has highlighted a problem that the now single opener which is also the delayed opener doesn’t always open.
The motor can be heard running but the gate is firmly locked. The gate opens usually on the second attempt and it appears to occur if the gates have not been opened for some time such as over night.
I installed a LiftMaster sub 300 system over five years ago and they have operated trouble free for all this time.
Recently I have changed the motor connections over to give the single opening leaf to the opposite gate (even wear). This has highlighted a problem that the now single opener which is also the delayed opener doesn’t always open.
The motor can be heard running but the gate is firmly locked. The gate opens usually on the second attempt and it appears to occur if the gates have not been opened for some time such as over night.