Daewoo dr

Daewoo error code DR indicates: Daewoo Nano-Silver / Total NoFrost Side-by-Side & Combi Refrigerator: Diagnostic fault code dr registered by the microcomputer controller. Door ajar acoustic warning alarm triggered: refrigerator or freezer door open continuously >2 minutes.

The primary root cause for Daewoo code DR is: On Daewoo appliances engineered with Nano-Silver antibacterial coating, Multi-Air Flow dynamic ventilation ducting, motorized air baffle damper, electronic defrost heater sheath, and precision 2.0 kΩ/10 kΩ NTC thermistors: Door gasket compressed or torn, hinge sagging causing latch misalignment, magnetic reed switch displaced, or door obstructed Metrological tolerance verification: magnetic reed door switch contact resistance: door closed < 0.1 Ω (continuity), door open = open circuit (infinite resistance)..

To resolve error code DR: Disconnect mains power before servicing. Unplug the harness at the main PCB and use a calibrated digital multimeter: verify door seal integrity with paper sheet slip test; inspect magnetic reed switch with magnet and test contact continuity (<0.1 Ω). Inspect contacts for pin oxidation or loose terminals. Replace defective part if out of tolerance, re-energize and clear error: Open fresh food door. Press and hold 'Refrigerator Temp' and 'Super Freeze' (or 'Ice Maker Off') buttons on the control panel simultaneously for 5 seconds until an acoustic chime sounds. Hold 'Alarm Reset' (or 'Freezer Temp') for 3 seconds until the display chimes twice and returns to normal temperature settings, clearing stored error history.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Daewoo code DR persists, the physical component causing On Daewoo appliances engineered with Nano-Silver antibacterial coating, Multi-Air Flow dynamic ventilation ducting, motorized air baffle damper, electronic defrost heater sheath, and precision 2.0 kΩ/10 kΩ NTC thermistors: Door gasket compressed or torn, hinge sagging causing latch misalignment, magnetic reed switch displaced, or door obstructed Metrological tolerance verification: magnetic reed door switch contact resistance: door closed < 0.1 Ω (continuity), door open = open circuit (infinite resistance). 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.