Bauknecht PO

Bauknecht error code PO indicates: Bauknecht ProFresh & Dynamic0° Total NoFrost Refrigerator: Power outage alert PO indicates extended mains interruption; internal temperature rose above safe food storage threshold..

The primary root cause for Bauknecht code PO is: On Bauknecht refrigerators (Bauknecht Zen Motor Direct Drive brushless BLDC and L1373 / DEA700 power control architecture): External blackout, tripped electrical safety breaker, loose wall receptacle, or momentary neutral voltage drop..

To resolve error code PO: Verify freshness and temperature of frozen perishables. Check wall socket voltage (230V AC ±10%). Silence buzzer and acknowledge alarm: Hold Alarm Reset button for 3 seconds until alarm indicator turns off and evaporator fan resumes normal cycle.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Bauknecht code PO persists, the physical component causing On Bauknecht refrigerators (Bauknecht Zen Motor Direct Drive brushless BLDC and L1373 / DEA700 power control architecture): External blackout, tripped electrical safety breaker, loose wall receptacle, or momentary neutral voltage drop. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test Compressor Motor Windings (Run/Start) & Defrost Heater across Across 3 compressor pins (Common, Run, Start): R(C-S) + R(C-R) = R(S-R). Winding to earth: >20MΩ (OL).. Expected nominal reading is 15Ω–25Ω (Run C-R), 20Ω–35Ω (Start C-S), 200Ω–400Ω (Defrost Heater). PTC Relay: 10Ω–30Ω at 25°C.. Tolerance: ±10%. Any low insulation resistance to casing (<2MΩ) trips the breaker. Defrost bimetal reads <0.5Ω when sub-zero..

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.