- Called client to provide homeowner courtesy heads up prior to my arrival and spoke with Keila. Homeowner verified address. - The homeowner that answered door was named Dean J. Liter. - Mr. Liter explained that his issue today was that they weren’t receiving any airflow downstairs. - Asked client if we could turn both thermostats to test the zoned system. - During diagnostic technician found Honeywell Zone control board displaying a temperature sensor fault preventing operations. - 20x25x4 filter installed backwards/ not dated/ dirty - Temporary removal of Sensor from board verified failure as equipment began to function properly and open both zones demanding a call for cooling. - Explained diagnostics to homeowner and homeowner authorized the provided estimate for immediatedean repair/replacement of comprised temperature Sensor with a VIP annual maintenance enrollment. - Properly installed/replaced Honeywell temperature sensor and performed minor AC/cooling diagnostic. - Honeywell Zo