Side-by-Side Refrigerator Not Cooling – What Part Fixes This Problem?
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Understanding the Problem
A side-by-side refrigerator not cooling can present in a few ways: the freezer stays cold while the fresh-food side warms up, both sections are warm, or there is heavy frost buildup in the freezer. Because side-by-side models share a single cooling system and rely on fan/damper airflow between compartments, a fault in airflow or the sealed system often affects cooling performance. Common mechanical and electrical causes include a failed evaporator fan (no air circulation from the freezer to fridge), a clogged or iced-over evaporator coil due to a defrost failure, dirty condenser coils or a failed condenser fan that prevents heat rejection, and problems with the compressor or its start relay. Simple user checks (door seals, temperature settings, listening for fans and compressor) often point to the likely area to inspect before ordering parts or calling a tech.
Common Symptoms
Freezer cold but refrigerator warm; both compartments warm; heavy frost/ice on freezer evaporator cover; loud or clicking compressor; no airflow from freezer to fridge; higher energy usage or frequent running.
Common Causes
- Evaporator fan motor failed or obstructed (no circulation of cold air)
- Defrost system failure (defrost heater, thermostat/timer or control) causing evaporator coil icing and airflow blockage
- Compressor or start relay failure, or sealed-system refrigerant leak preventing cooling
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 fridge powered on and the compressor running, open the freezer door and listen—if you don’t hear the evaporator fan running when the compressor is on, the evaporator fan or its motor/control is a prime suspect.
Frequently Asked Questions
My freezer is cold but the refrigerator side is warm — is that the evaporator fan?
Yes, that is the most common cause. Side-by-side models rely on the evaporator fan in the freezer to circulate cold air through a shared duct into the refrigerator compartment. If the freezer is cold but the fridge is warm, check for the evaporator fan running, an obstructed air duct/damper, or heavy frost on the evaporator coil (which indicates a defrost problem).
Should I replace the compressor if the fridge isn't cooling?
Not immediately. First check easier and less expensive items: condenser coils (clean them), condenser fan motor, evaporator fan, start relay, and defrost components. If the compressor is not running and the start relay is faulty, replacing the relay may fix it. Compressor replacement or sealed-system repairs are expensive and usually require a licensed HVAC/ refrigeration tech and leak testing to confirm a true compressor or refrigerant-seal failure.
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Whether your dishwasher won't drain, your dryer stopped heating, or your fridge isn't cold, we've created simple repair guides for the most common appliance problems homeowners face. Each guide explains what's going wrong, the most likely causes, and which replacement parts fix the issue. When you're ready to order, we link directly to PartsDiscount.com where you can search by model number and get the right part shipped fast.