The Integration Team found that the ITMY RH was giving off some false readback numbers like 7E+34 Amps, which is sure to be false. The glitch seems to have occurred on 12/24/13 around 8:19 AM PT.  The SVN shows that the code has not been changed since 12/10/13 and we had tested the pair on 12/04/13 as noted in ALOG 8816 so things were working before Christmas Eve.

After seeing this, I power cycled the chassis and ring heater driver and it seems to have fixed the problem.  Just as a precaution, I also added the trend of the vacuum pressure during this time and it doesn't show signs of any pressure changes.  I'll try to keep an eye on this in the future to see what the root cause might be.