Samsung Refrigerator DG3-301-2, Replaces c8a400
DG3-301-2 Refrigerator Main Control Board — The main control board is the central processor of your Samsung refrigerator — it manages the compressor, fans, defrost cycle, temperature sensors, and display. When it fails, the refrigerator may stop cooling entirely, the compressor won’t start, the display shows persistent error codes, or the fridge behaves erratically despite all other components testing good. This is the genuine OEM Samsung replacement board, direct fit for compatible models.
Is This the Right Part?
Confirm the complete model number before ordering. Similar parts may use different connectors, dimensions, hose positions, electrical ratings, or mounting points.
- Refrigerator not cooling — compressor not running despite power being on
- Persistent error codes on the display that won’t clear after a reset
- Fridge and freezer both warming up with no obvious cause
- Compressor, fans, and defrost heater all test good but fridge still won’t cool
- Display is blank, flickering, or showing garbled information
- Fans run but compressor never starts
- Refrigerator cycles on and off erratically or won’t maintain set temperature
- Ice maker stopped working alongside other cooling issues
- OEM Part Number: DG3-301-2
- Manufacturer: Samsung
- Condition: Genuine OEM — new, factory original
- Compatible Brands: Samsung
- Component: Main control board (main PCB) — central refrigerator controller
- Skill Level: Intermediate — requires accessing the control board compartment
- Estimated Time: 20–40 minutes
- Always unplug the refrigerator before beginning any repair
- The main control board is typically located in the rear lower compartment or behind a panel at the back of the unit — consult your model’s service manual for exact location
- Photograph all wire harness connections before unplugging — connector positions and colours matter
- Handle the board by its edges only — static discharge can damage the new board before installation
- No programming required on most models — direct OEM swap
- After installation, allow the refrigerator 24 hours to reach stable operating temperature before evaluating performance
The main control board is one of the most expensive refrigerator parts — and one of the most commonly misdiagnosed. Before ordering, test the compressor start relay (a $10–20 part that fails far more often), check for a tripped thermal overload on the compressor, and verify the temperature sensors are reading correctly. A failed start relay mimics a dead compressor and a dead control board almost identically. Replacing the relay first takes 5 minutes and costs a fraction of the board price.
Part Details
Use a qualified technician when diagnosis or installation is outside your experience. Gas parts should be installed by a licensed technician.
✅Compatibility & Cross Reference
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.
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