Rongsheng Refrigerator BCD-172K Not Cooling:Why is my Rongsheng Refrigerator BCD-172K not cooling even though the compressor seems to be running?

Q: Why is my Rongsheng Refrigerator BCD-172K not cooling even though the compressor seems to be running?

A: If the compressor of your Rongsheng BCD-172K is running but the refrigerator is not cooling, the most likely culprit is a refrigerant leak. Over time, the sealed system can develop small leaks at joints or the evaporator, causing the refrigerant charge to drop below the level needed for proper cooling. Another possibility is a partial blockage in the capillary tube or a failing compressor that runs but no longer pumps efficiently. Start by checking if the condenser coils are clean and the fan is working, because dirty coils can mimic a low charge. If the compressor is hot and cycling on overload, the start relay or capacitor may be weak. For a definitive diagnosis, a technician should measure the low-side pressure and inspect for oil traces at joints. Adding refrigerant without finding and fixing the leak is only a temporary fix. If the unit is older and uses R134a, a professional recharge and leak repair are usually the best route before considering replacement.

Q: What should I check if my Rongsheng BCD-172K freezer works but the refrigerator section is warm?

A: On the Rongsheng BCD-172K, the freezer and refrigerator compartments share a single cooling system, so a cold freezer with a warm fridge often points to an airflow or defrost problem. First, make sure the fridge compartment isn't overloaded and blocking the air vents at the back. If the evaporator fan is not running, cold air won't circulate from the freezer to the refrigerator section. You can listen for the fan or feel for air movement. Another common cause is a failed defrost system, where ice builds up on the evaporator coils and blocks airflow. Check the defrost heater, defrost timer, and defrost thermostat for continuity. A stuck-open damper or a faulty air damper control can also prevent cold air from entering the fridge. If the evaporator coils are heavily frosted, manually defrost the unit for 24 hours and see if cooling returns. If it does, replace the defrost components. If not, the issue may be a weak compressor or refrigerant loss, which requires a technician.

Q: My Rongsheng BCD-172K stopped cooling after a power outage. What could be wrong?

A: After a power outage, your Rongsheng BCD-172K may fail to cool due to a tripped overload protector or a damaged start relay on the compressor. Power surges can burn out the start relay, leaving the compressor unable to start; you may hear a clicking sound every few minutes but no cooling. Another possibility is that the electronic control board or thermostat was damaged by the surge, so the compressor never receives the signal to run. Check the outlet and power cord first, then inspect the start relay for burn marks or a rattling sound. If the compressor hums but doesn't start, the run capacitor may also be faulty. In some cases, the compressor itself may be locked up. Unplug the refrigerator for 10 minutes, then plug it back in and listen. If you hear clicking but no compressor hum, replace the start relay and capacitor. If the compressor tries to start but trips the overload, call a technician. A surge protector is recommended to prevent future damage.

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Common scenarios of "Rongsheng Refrigerator BCD-172K Not Cooling"

【User】 My Rongsheng Refrigerator BCD-172K stopped cooling. The freezer is fine but the fridge section is warm. What could be wrong?

【Technician】 Thanks for reaching out. A common cause for this model is a blocked air damper or a failed evaporator fan. Is the compressor running continuously?

【User】 Yes, it runs almost nonstop. I also noticed some frost buildup at the back wall of the freezer.

【Technician】 That points to a defrost system issue. If the defrost heater or timer fails, ice blocks the air passages, so cold air can't reach the fridge section. Can you check if the freezer back panel has heavy ice?

【User】 Yes, there's a thick layer of ice behind the panel. Should I unplug it and let it thaw?

【Technician】 Exactly. Unplug it, leave the doors open for 24 hours with towels, then restart. If the fridge cools again, the defrost system is faulty and needs replacing.

【User】 Okay, I'll do that. But if it doesn't fix it, what else should I check?

【Technician】 Next, check the air damper between freezer and fridge. It may be stuck closed. Also test the evaporator fan motor—if it doesn't spin freely, replace it.

【User】 How do I test the fan motor? I have a multimeter.

【Technician】 Unplug the fridge, access the fan behind the freezer panel, and measure resistance across its terminals. It should read a few hundred ohms. If open or infinite, it's bad.

【User】 Got it. And what about the thermostat or thermistor?

【Technician】 Yes, a faulty thermistor can misread temperature. Check its resistance at room temp—should be around 5k to 10k ohms. If off, replace it.

【User】 I see. Could a clogged condenser coil also cause this?

【Technician】 Absolutely. Dirty coils reduce cooling efficiency. Clean them with a vacuum brush. Also ensure the fridge has 2 inches of clearance around it.

【User】 I'll clean the coils and check the fan. If the compressor is weak, would that affect only the fridge section?

【Technician】 Yes, a weak compressor often shows uneven cooling. But first rule out defrost and airflow issues—they're far more common on the BCD-172K.

【User】 Thanks. I'll try the manual defrost first. If it works, which part should I order?

【Technician】 Order a defrost heater and defrost timer or control board, depending on your version. Check the model sticker inside for the exact part number.

【User】 Will do. If the defrost doesn't fix it, I'll call a pro. Thanks for the help!

【Technician】 You're welcome. Stay safe and unplug before any repairs. Good luck!