Yep, it can happen. The scenario would be a poor neutral connection so
that a 120 volt on one 'phase' may be significantly higher or lower
than the 120 while the 240 to the oven or AC unit is fine.



Also if DIY work has been done, there's no telling what could be the case. A
120V branch circuit or receptacle wired to 240V can certainly do this,
though it's usually quickly obvious something is wrong. Yes, I've seen it
done. If only newbies insisting on doing their own work would at least pick
up a DIY book first.