Oven pressure switches have slightly different designs in different types of ovens. In a conventional single-stage oven, there is a pressure switch and it has a hose that leads to the body of the induction fan.
A single stage condensing oven has a pressure switch with two hoses in the switch, one to detect the pressure in the draft inductor / burner cabinet and the other to detect the proper ventilation pressure in the condensate collector box.
Two-stage ovens can have two pressure switches and modulation ovens can have three pressure switches.
A pressure switch that does not turn on can be caused by several problems, including:
Traction inductor failure
Air intake restricted
Strictly combustion air vent
Leaks around assemblies
Drained condensate drain
Pressure switch electrical failure
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