Side-by-Side Refrigerator Not Cooling – What Part Fixes This Problem?
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Understanding the Problem
A side-by-side refrigerator that stops cooling can be caused by several systems failing: airflow (fans or door/damper), the defrost system icing the evaporator, the sealed refrigerant system (compressor or a leak), or control/temperature sensing components. The freezer section often cools first and the refrigerator relies on airflow through a damper and fans; when those fail the fridge side will be warm while the freezer may remain cold or iced over. Diagnosing requires checking airflow, frost patterns on the evaporator, and whether fans and the compressor are running. Start with easy checks: clean the condenser coils, listen for the compressor and both fans, inspect the evaporator for heavy frost, and verify the temperature settings. If fans and defrost components are working but the compressor isn’t running or the sealed system has lost refrigerant, you'll need a trained technician with gauges and vacuum equipment. Electrical components such as thermistors, relays, or the main control board can also cause intermittent or complete loss of cooling and are generally diagnosable with a multimeter.
Common Symptoms
Warm refrigerator compartment while freezer is cold or iced; frost buildup on evaporator; fans not running; compressor clicking or not running; temperatures fluctuate or fail to reach setpoint.
Common Causes
- Evaporator fan motor failure or blocked airflow (damper/vents)
- Defrost system failure causing evaporator icing (defrost heater, thermostat, or control)
- Condenser fan motor failure or dirty coils causing poor heat rejection
- Compressor failure or sealed system refrigerant leak
- Faulty temperature sensors (thermistors) or main control board/damper control
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 ProsourceParts.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Listen and feel: if compressor is hot and running but no cold air in fridge, check evaporator fan and damper; if freezer is iced solid, test defrost heater and defrost thermostat. Use a multimeter to check fan motors and thermistors for continuity before buying parts.
Frequently Asked Questions
Can I fix a side-by-side refrigerator that's not cooling myself?
You can perform basic checks: unplug and clean condenser coils, ensure vents/damper aren’t blocked, listen for and visually check fans (evaporator and condenser), and look for heavy frost on the evaporator. You can test fan motors, thermistors, and defrost components with a multimeter for continuity. Do not attempt sealed-system repairs (compressor or refrigerant) yourself — those require EPA certification and specialized equipment.
How much will it cost to repair a refrigerator that won't cool?
Costs vary by cause: simple items (fan, thermistor, relay) typically run $50–$250 parts plus labor. Defrost system repairs are usually $150–$400. Compressor or sealed-system repairs are expensive — often $400–$1,200 or more and can approach the cost of a new fridge depending on age and model. Get a diagnostic from a licensed technician to get an accurate estimate.
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