Hi @senseinaz. We had our Data Science lead take a look at the stall data here and had a few notes. Although we’re not HVAC experts, there are some additional findings we want to share with you here so other community members can provide insight and hopefully provide some more direction on next steps for you.
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We did see an undetected stall at shut-off.
Note: The controller inside an A/C is supposed to protect against this. Sometimes until the pressures somewhat equalize between the two sides of the compressor, the compressor won’t have enough torque to start up again, causing a stall. -
We did see multiple stalls that do not look like the stalls that are typically caused by a faulty capacitor, which we can recognize rather well.
Note: Start capacitors are what we’ve primarily been detecting faults in (they are cheap to replace). Other faults that are not linked to the capacitor could be more costly. -
We are seeing some abnormal stalls here. They’re abnormal compared to what we typically see here (as i mentioned above, typically we see capacitor faults).
Note: Some “abnormal” behaviors are one-offs, so we recommend watching for it happening again moving forward.
I’ve included additional screenshots for community members below
This is the signature we typically see for a stall:
This is a back-end view from Data Science of your stalls with the “abnormalities” circled:
