Performed heating maintenance on two systems. Checked filters, lighting, ductwork, plenums, attic insulation, amp draws, door switches, blower wheels, bearings, wiring, grounding, flame color, ignition start up sequences, auxiliary limit lockouts, ignition failure lockouts, pressure switch lockouts, flame sensors, igniters, induced draft assemblies, gas lines, gas flex, cut off valves, static pressure, heat exchangers, flue pipe, drain pans, indoor air quality, etc. Cleaned work area. Thanks!
