I usually wait until the end of May to schedule my PM. We had a couple of warm days so I turned on the a/c. While the heat load was minimal, it was uncomfortable in the house, but I had to lower the set point but still wasn't comfy.
The airflow is set to 400 CFM/T, condensate production was less due to lower RH. I checked the DT and found it to be 14* (was 18 at last year's PM).
My unit has high and low pressure safeties, so I feel secure if I need to run it occasionally until its checkup.
My question: If heat load and RH are lower, would I expect my DT to be lower, or could this be a sign of lost refigerant?