狗一下?Clogged air intake or exhaust
If the air intake or exhaust is clogged with debris,
-augo(lig);
2022-1-21{233}(#14292917@0)
the pressure switch can remain in the OPEN position. This is because blockages prevent the inducer fan from creating negative pressure. A furnace pressure switch stuck open is a common problem for many homeowners
外面进出口被❄堵了?