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Looks like circuit one was overcharged in an attempt to raise the suction pressure, which is low due to a heat transfer issue.

Post back and let us know what the final fix is. One thing I'd look...

In order for the low charge idea to hold water, the tech would have had to mistakenly thought the problem was the txv, and after the repair, load in an insufficient charge a second time. I think the...

My two cents is low heat load due to poor airflow. I would also want to see subcool a little lower, unless the manu says otherwise.