Rheem Error Codes

Rheem error codes verified against official Rheem support pages, owner's manuals and manufacturer service charts, by appliance.

• Rheem furnace error codes
• Rheem ac & heat pump error codes
• Rheem tankless water heater error codes
• Rheem tank water heater error codes

All code pages

Rheem furnace 3 blinks (limit switch open) Rheem furnace 2 blinks (pressure switch failure (remains open)) Rheem furnace 1 blink (soft lockout (1 hour)) Rheem ac & heat pump LEDs off (no power to control board) Rheem tankless water heater 11 (gas shut-off valve not fully open) Rheem tankless water heater 12 (gas service interrupted or LP running low) Rheem tankless water heater P1 (not enough water flow)