Hey, yes, that’s exactly why I’m questioning whether someone may have done something to the control board as well. As ridiculous as it sounds, my NTI TRX120 boiler is permanently showing an APS status of 1/ON (which means closed), regardless of whether the boiler is running or idle. This has been validated by the manufacturer’s online support at least three times, yet the boiler has been running with no error codes. The APS status will never show 0/OFF (open)
I believe not only that the APS was jumped, but that someone also tampered with the board. During the installation, there was mention of “getting a board” from the manufacturer, which in retrospect sounds extremely suspicious, and I am now asking the authorities to step in.
Now, the air intake cap is indeed removed, but that piece of plastic was sealing the entire boiler for six weeks, and it still kept running.
drive.google.com
drive.google.com