Samsung Refrigerator Not Cooling? Compressor MKV190CL2B/ASH – Fix Cooling Failure Fast
A refrigerator that won’t cool, runs constantly, or has a warm freezer is most often caused by a failed compressor. In most Samsung refrigerators, the compressor is the heart of the sealed cooling system — when it fails, refrigerant stops circulating and both the fridge and freezer compartments warm up completely. When it fails, food spoils rapidly and the unit may run continuously without reaching temperature. ⚡ Compressor failure is the leading cause of complete cooling loss in Samsung refrigerators. Part MKV190CL2B/ASH is the genuine OEM R-134A compressor that restores full sealed-system cooling performance to your Samsung refrigerator.
❓ Is This the Right Part?
This is the correct fix if ALL of the following are true:
- ✔ Your refrigerator is a Samsung model that uses R-134A refrigerant
- ✔ The compressor does not start, runs briefly then stops, or runs continuously without cooling
- ✔ Condenser coils and evaporator fan are confirmed clean and operational
- ✔ Start relay has been tested and replaced if faulty (rule out relay first)
- ✔ ONLY problem is complete cooling loss or compressor not running — not a defrost, fan, or control board fault
Not sure? Send us your model number — we’ll confirm before you order.
🔧 Common Symptoms
- Refrigerator not cooling — both fridge and freezer compartments warm
- Compressor clicks on then immediately shuts off (start relay or compressor failure)
- Compressor runs continuously but temperature never drops
- Loud clicking, buzzing, or humming from the back of the unit at startup
- Compressor completely silent — no vibration or heat at the back of the unit
- Food spoiling rapidly despite thermostat set correctly
✔ If these symptoms match, this is the most likely failed component in the system.
✔ In most cases, replacing the compressor with a certified technician restores full cooling performance.
📦 Part Details
- Part Number: MKV190CL2B/ASH
- Type: Refrigerator Compressor — R-134A Refrigerant
- Replaces: OEM direct-fit Samsung compressor assembly (no modification required)
- Brands: Samsung
Always replace the compressor start relay at the same time — a failed relay is often the root cause of compressor burnout and costs under $15. Also flush and recharge the sealed system with fresh R-134A refrigerant; reusing contaminated refrigerant will shorten the new compressor’s lifespan significantly.
⚙️ Installation
Skill Level: Advanced — Professional installation required. Compressor replacement involves working with a sealed refrigerant system and requires EPA 608 certification to legally handle R-134A refrigerant in Canada and the US. Unplug the refrigerator and allow it to fully defrost before beginning. A certified technician must recover existing refrigerant, braze the new compressor into the sealed system, pull a deep vacuum, and recharge with the correct R-134A quantity per the unit’s data plate. Do not attempt this repair without proper recovery and recharge equipment.
💡 Pro Tip
Before committing to a compressor replacement, remove and shake the start relay — if it rattles, it’s failed and is the most common cause of compressor no-start symptoms. A new start relay costs under $20 and takes 5 minutes to swap. If the relay tests good and the compressor still won’t start, then compressor replacement is the correct next step.
Related repair guides and model hubs: Samsung Refrigerator Compressor Repair, Samsung Refrigerator Not Cooling, Samsung Refrigerator Parts
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✅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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