Kenmore 79641072311 Refrigerator Not Cooling – What Part Fixes This?
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Understanding the Problem
If your Kenmore model 79641072311 refrigerator is warm in the fresh food section or freezer, it’s usually caused by one (or more) failed components in the cooling or air‑distribution system, or by poor heat rejection. Common culprits include a failed evaporator fan (no cold air circulating), a faulty defrost system (ice building on the evaporator coil), a bad thermistor/temperature sensor sending incorrect readings, or dirty condenser coils/restricted airflow making the compressor work inefficiently. Start with basic, safe checks: listen for the compressor running, check whether the evaporator fan runs when the door is closed, inspect the freezer for frost build-up on the rear evaporator cover, and make sure condenser coils are clean and the fridge has proper clearance. These observations usually point to the specific part at fault. If multiple symptoms appear (ice build-up plus no fan operation), you may have more than one failing component or a control board problem that needs professional diagnosis.
Common Symptoms
Warm fresh-food section or freezer, frost or heavy ice buildup on freezer rear panel, evaporator fan not running, compressor running constantly (or cycling rapidly), water pooling from defrost drain or poor cooling after door is closed.
Common Causes
- Failed evaporator (interior) fan motor preventing cold-air circulation
- Defrost system failure (bad defrost heater, defrost thermostat/bi-metal, or defrost control) causing ice buildup on evaporator coil
- Faulty thermistor/temperature sensor or main control board giving incorrect temperature readings
- Dirty condenser coils or blocked condenser fan causing poor heat rejection
- Compressor start device/relay or compressor failure (less common but possible)
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
With the unit powered on and the freezer door open, carefully listen and feel for the evaporator fan motor; if the compressor runs but the fan is silent, the evaporator fan motor is the most likely faulty part. Use a multimeter to check thermistor continuity (consult service sheet for expected resistance at 25°C) and check defrost heater continuity to confirm defrost failures.
Frequently Asked Questions
Can I diagnose and replace these parts myself?
Yes, some checks and parts replacements are DIY-friendly if you have basic tools and safety knowledge: cleaning condenser coils, testing/ replacing the evaporator fan motor, checking defrost heater continuity, and swapping thermistors. Always unplug the refrigerator before working on electrical components. For compressor, sealed system, or control-board diagnoses you should hire a certified technician.
How much will it cost to fix a cooling issue on this Kenmore?
Costs vary by problem: replacing an evaporator or condenser fan motor typically runs $50–$150 for parts and possibly similar for labor; defrost heater or thermistor replacements are usually $50–$200 total; control board or compressor repairs can be $300–$1,200+ depending on part and labor. Get a diagnosis first to avoid replacing unnecessary parts.
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