J. Kissel

Since I just got through reviewing the last two months of LVEA HVAC system woes (LHO:70284), I happened to have the LVEA HVAC's Air Handler Unit metrics still up on my computer. 

As such, I noticed that on June 07 2023 14:46 PDT (Wednesday afternoon) that the LVEA Zone 1B (think 3IFO storage area) took a ~0.4 deg F dip, and then recovered by ~20:00 PDT (that same Wednesday night). Not a big deal, but it's suspicious because no other metric -- the zone heaters percent "on-ness", the airflow meters from the fans, the air handler damper percent "openness", the coiling coil temperatures, i.e. the human/computer controllable temperature actuators -- show any similar excursion. 

Further, at an indeterminate amount of time ~20-24 hours later, but definitely by June 08 2023 18:00 PDT (Thursday afternoon), Air Handler Unit 2 (AHU2) Fan 3 shows a slow and steady increase in air flow (see H0:FMC-CS_LVEA_AH_AIRFLOW_3) from 7800 cubic feet per minute (CFM) to 8500 CFM -- see purple trace in 3rd panel of the last week.

You can also see that the Zone 1B (orange) and even Zone 1A (blue) in the top panel of that same trend may also be starting to increase.

Again, probably not a big deal in terms of LVEA temperature, but given the last couple of months of HVAC issues, I want to call folks attention to this early since we're about to head into a weekend.