Completed two system maintenance and inspection. I cleaned flame sensors and wiped down furnaces. I checked components and amp drawers. I tested air pressure and temp splits. Main floor furnace is running a little hot. I recommended using a Merv a filter to allow the system to breathe a little better till the airflow gets fixed. Upstairs system was sending an alert to customer’s phone stating that it was waiting on the equipment. The system was going into a lockout due to number of tries where it could not start. I found that the dual pressure switches were not operating correctly. One of the wires was bent pretty far and I blew out the air tubes. After this, the upstairs furnace kicked on and ran twice and satisfied the thermostat. Both furnaces are operational at departure.