THEY KEEP RESETTING THE ALARM WITH THE BREAKER - TRANE CGAM CHILLER
Vložit
- čas přidán 7. 09. 2024
- Service call for an air cooled Trane CGAM chiller - customer kept resetting the alarm using the main breaker for the unit - thankfully no major issues! Coil Cleaning and system performance check up
Video update !!!
The issue kept coming back at random times for about a month after this call. I went back and updated the software with tech view as it was 5 or 6 updates behind . This resolved the problem and we haven’t had the issue since. Apparently some of the major updates in newer software version specifically pertained to EXV malfunctions like this .
On the older firmware it would attempt to "unload" the compressors if head pressure was too high (from failed fan or blocked condenser) by opening the EEVs to prevent going into high head trip as a compromise between run integrity and preventing compressor damage. This of course can cause it to go into low/negative SH and trip the Low SH alarm anyway. This is one of those rare cases where the symptom is disconnected from the cause by automation that fails to monitor itself.
The issue kept coming back at random times for about a month after this call. I went back and updated the software with tech view as it was 5 or 6 updates behind . This resolved the problem and we haven’t had the issue since. Apparently some of the major updates in newer software version specifically pertained to EEV malfunctions like this .
@@dfwhvac Funny how "edge cases" that affect the PID tuning for those EEVs are more real world than the software engineers expected. Stuff is harsher in the real world than engineers seem to ever expect. 🤣 While you can squeeze a few more percent efficiency with software, they need to remember that in those few percent there be dragons.
Excellent video 👍
Fantastic job!! 👏🏼
Awesome video!
Sweet, man.
Who we replaced old control to new