What was found
IN AUTO RIGHT, AC WENT FULL HOT, SMOKE IN CABIN LAVATORY, ALARMS WENT OFF. SWITCHED TO FULL COLD IN MANUAL, CABIN CLEARED, ALARMS OFF. TRIED AUTO MODE AGAIN, ONLY HELD FULL COLD IN ANY POSITION. OPERATES NORMAL IN MANUAL. REMOVED AND REPLACED CABIN TEMP SELECTOR, OPS CHECK GOOD.