Performed heating maintenance on two basement furnaces 2023 Payne single stage 95% efficient 120kbtu Replaced 20x25x4 filter Cleaned flame sensor Found condensate trap gasket leaking inside the furnace Replaced trap gasket and flushed trap with water Furnace cycling on high limit due to insufficient return duct tied into the furnace Compensated with reducing gas pressure down to 3.0"wc and increasing blower speed to max Furnace is no longer overheating 2011 Lennox single stage 93% furnace Cleared condensate lines inside the furnace Trap is clear Replaced 20x25x4 filter Cleaned flame sensor This furnace is operating within specs without any adjustments today
