Completed furnace, maintenance and inspection. I cleaned flame sensor and wiped down furnace. I checked amp draws and components. I tested airflow, pressure and temp splits. I tested humidifier operations and found that the humidifier did not have any water running to it. The quarter turn valve was clogged up with hard water deposit. The water resistor in the water tube, most likely cause this. I took out the water resistor and was able to clear out the quarter turn valve so the humidifier is working properly. Furnace is operating within manufacture specifications at departure.