Customer call their unit was continuously running. Arrived on site checked outdoor unit found it was an off position. Met customer at front door she informed me unit was still running can hear blower motor running from ductwork. Once a thermostat found fan was in on position, so tuned it to Auto position turn up temperature to 65F wherethe customer wanted it at. Checked out during was running at this time. I forgot to switch van from on to Auto when leaving from doing Diagnostics on January 10th 2024. System isn't working condition at this time.