This error sequence usually indicates an internal fault to the projector.
We would recommend firstly removing the power to the projector for 30 minutes and seeing if this error sequence persists.
If it does, we would recommend contacting us with the serial number directly so we can further assist as this may need a repair.
You can contact us directly on the below link by either phone or email:
I hope this information helps.
Promethean Technical Support
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