[IronicDeadBird]

I had to describe some of the times it is appropriate to contest matches to a student at the Colorado Regional and I did so roughly like this.
If for some reason the FIELD falls out of specifications in a way that makes it impossible to play the game in a way that is safe to all those involved and fair to both sides (effects the outcome of a match or prevents the match from being played properly) to those involved then a field fault then you CAN POLITELY ask if a field fault could be considered. Keeping in mind that it is also well within your right if a field fault causes a match to be replayed directly after a completed or mostly completed match you can ask if a Field Timeout could also be considered.
Otherwise don't blame your bad battery or loose connections on the field.

I will admit this is always my least favorite part of the manual to read because I've never needed to cite it due to a "positive" circumstance.