Electric gate will not close

[iceman]

Hi, I would check out the safety sensors 1st.

Hope this helps

Hope someone can help.
My swing gates are set to close automatically after driving through them, however recently rather than the gate trying to close it has tried to reopen again i.e it repeats the opening (or it would were it not already open). It is a hydraulic system made by SEA
I have checked the obstruction sensor in case anything was causing this to engage but that is not the problem.
The indicator lights on the motherboard change sequence from the opening to the closing part of the cycle but the gate is still trying to move to open rather than close.
Any thoughts?