High Velocity door issue

[wash4me]

About once a week I have someone that tells me they paid at my Hamilton Goldline and the door goes up about a foot then goes back down. I have Airlift sectional doors that are about 10 years old. Any ideas?

 

[wash4me]

Still have this issue, any ideas? The doors go up and down well so i think it's an electrical issue somewhere.

 

[22MVR22]

You can most likely eliminate the High Velocity UCC by swapping out relay 1200 for entrance door up and inspecting the wires on terminated on the relay. The relays for the door controls are used as a set of dry contacts, if the relay isn't working properly or if there is a loose wire on one of the terminals it could interrupt the the door going up. Other than that it may be a connection on the door controller itself.