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Hi TheNetherland, based on the Frigidaire side‑by‑side refrigerator owner’s manual and common troubleshooting info for that type of model (like your 22.3 cu ft side‑by‑side), here’s why you’re hearing a loud motor‑type noise from the freezer that stops when you open the fridge/freezer door: What’s Likely Happening 1. Evaporator fan noise when doors are closed - Inside the freezer is an evaporator fan that circulates cold air through the freezer and fresh food compartment. When a fridge door is opened, the refrigerator electronics usually shut the fan off so you don’t lose cold air, which explains why the noise stops as soon as you open the door. When the door closes, the fan restarts and the loud noise returns. 2. The fan might be worn or obstructed - If the fan motor bearings are wearing out or ice has built up around the fan blades, the sound can be louder than normal, often a grinding, humming, or vibrating motor‑type noise. Ice buildup can happen if the defrost system isn’t working perfectly or if moisture enters the freezer compartment. 3. Not a panel or bottom motor - Since you checked and cleaned the compressor/motor at the bottom and it didn’t change anything, it’s expected that the motor usually runs quietly and doesn’t stop when doors open. The sound coming from the freezer area points to internal airflow/fan components rather than the compressor. Many sounds are normal, including fan airflow and compressor hum, but a loud buzzing or loud motor hum that clearly changes when doors open and close is usually fan‑related. What You Can Check 1) Ice buildup around the evaporator fan Remove the shelves and the rear interior freezer panel (if you’re comfortable doing that), and check for ice or frost around the fan blades. Ice hitting the blades will make a loud noise as it spins. 2) The fan itself Try turning the fan blade by hand (with the fridge unplugged). If it feels rough or doesn’t spin freely, the fan motor may be failing. 3) Defrost Function Ice buildup can be a sign of a defrost system issue. If defrost isn’t working, ice will accumulate and cause noise. Likely Fixes - Thaw the freezer fully unplugged for a few hours to melt ice around the fan. - Replace the evaporator fan motor if the bearing is failing. - Ensure freezer door seals properly, so moisture doesn’t enter and freeze around the fan. If, after checking/defrosting the fan area, the noise persists, the fan motor itself may need replacement, which is common on Frigidaire models with noisy internal fans. Technician service can diagnose and change that part safely if you’re not comfortable doing it yourself. - Maico
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