Rheem Gas Furnace: R95PA Re: Status & Fault Codes The furnace control comes standard with a 7-segment diagnostic display. During Standby mode (with no faults), the display will read "0". During normal Heating, Cooling or Continuous Fan operation, a letter will be displayed to...

Rheem Gas Furnace: R95PA Re: Flashing Code 57 Code 57 = Furnace Pressure Switch Open when it should be Closed. Qty Possible Causes: Bad Inducer Motor Water in inducer 1 Clogged or Restricted Vent Bad Pressure Switch Clogged / Frozen Drain...