Amana Refrigerator / Freezer FB

Amana error code FB indicates: Amana Temp Assure Side-by-Side & Bottom-Mount Refrigerator: Status notification FB indicates water filter bypass plug is installed; water dispenser operating without active carbon filtration..

The primary root cause for Amana code FB is: On Amana refrigerators (Amana Temp Assure and Jazz electronic control platform): Water filter cartridge removed and bypass plug engaged, or filter head microswitch stuck closed (12V DC circuit)..

To resolve error code FB: Install genuine replacement water filter cartridge and rotate clockwise 90° until fully seated. Flush 3 liters of water through dispenser to clear air and reset indicator. Press and hold Refrigerator Temp and Freezer Temp adjustment buttons simultaneously for 3 seconds to reset Jazz board.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Amana code FB persists, the physical component causing On Amana refrigerators (Amana Temp Assure and Jazz electronic control platform): Water filter cartridge removed and bypass plug engaged, or filter head microswitch stuck closed (12V DC circuit). must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test PTC Heater Pellet / Pulse Solenoid / Microswitch Contacts across Across PTC heater terminals on lock bezel; switch contact reads <0.2Ω when locked. Expected nominal reading is 800Ω–1.5kΩ (PTC terminals L-N) / 60Ω–120Ω (Pulse Solenoid). Tolerance: ±15%. Switch contacts must read open (OL) when unlocked and 0.0Ω–0.2Ω when fully latched..

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.