Upon arrival inspected system and found in limit fault. Inspected filter and filter was clean dated 12/3/25 humidifier bypass open unit producing 78° rise. Unsure of cause of shift in temperature rise. Adjust gas pressure down to 3.2 and adjust blower speeds to allow 10% more airflow during heat. check temp rise now doing 65°. Unit only went into limit fault from extending runtime with extended demand from lots of in and out traffic. Gas pressure being 3.6 temp rise being high with clean filter remove diag fee