Nice gate stuck on open

[Michael]

We opened the gate with the fob  but then it did not close.
When we pressed button on fob nothing happened and there was no light.
So we freed the gate using the key and closed it putting it back on . Signal still did not work.
Later we noticed gate was open again without intervention.
It looks as though it's stuck on open or has gone into open mode. The receiver still does not ashow any lights.

Hi,

This sounds like a photocell issue, could you please tell me what how many flashes does the bluebus light indicate followed by a pause?

Regards 
Mike