On December 22, 2024, I successfully repaired a GE GSH25JSTCSS refrigerator for a local customer in Rochester, MN who was facing persistent frost buildup. Drawing on that experience, I’ve compiled this guide to help you understand the causes, implement DIY fixes, and determine when to call in a professional. If your GE GSH25JSTCSS refrigerator is building up heavy frost despite running normally, you’re not alone. Heavy frost can disrupt cooling efficiency, raise energy bills, and even spoil your food. At Appliance Repair Rochester, I’ve handled similar issues firsthand.
Call Now for Emergency Appliance Repair Services In Rochester, MN
Why Your GE Refrigerator Has Heavy Frost
Frost forms when moisture enters the freezer and freezes on the coils. Common culprits include:
- Faulty Defrost Heater: A broken heater won’t melt ice during defrost cycles.
- Defective Defrost Thermostat: This component triggers the heater—if it fails, frost builds up.
- Malfunctioning Door Switch/Seal: A door that doesn’t close properly lets warm, humid air inside.
- Board or Sensor Issues: Even new main boards (replaced in 2022) can malfunction.
User Observations & Community Insights:
- The fan runs when the door is open → Likely a door switch problem.
- Frost persists after a “natural” defrost cycle → Points to heater/thermostat failure.
- Using a steamer was faster than a hair dryer.
- Ohm the heater; look for blackened, smoked elements.
- Never use a hair dryer on plastic-lined fridges.
How I Fixed Frost in GE Refrigerators: Step-by-Step Guide
1. Manual Defrosting (Temporary Fix)
- Unplug the refrigerator.
- Remove food and place towels to catch melting ice.
- Let frost thaw naturally (never use sharp tools!).
- This buys time until parts arrive but doesn’t fix the root cause.
2. Run the Control & Sensor Self-Test (0 7)
The GE GSH25JSTCSS has a built-in diagnostic mode:
- Press and hold “Light Filter” + “Temp Down” for 3 seconds.
- Enter test code 0 7 to check sensors and controls.
- Look for error codes (e.g., “FF” = freezer sensor failure).
3. Inspect the Door Switch and Seal
- Test the door switch with a multimeter.
- Check the seal for cracks or gaps. A faulty seal lets humidity in, accelerating frost.
4. Test the Defrost Heater and Thermostat
- Defrost Heater: Use a multimeter to check for continuity. No continuity = replace.
- Defrost Thermostat: If it doesn’t activate at ~20°F, it’s defective.
When to Replace the Defrost Heater & Thermostat in GE Fridge
If your tests confirm heater/thermostat failure, replacement is critical. At Appliance Repair Rochester, we recommend:
- GE WR60X10052 Defrost Heater
- GE WR09X10003 Defrost Thermostat
Pro Tip: Always replace both parts together to avoid recurring issues.
Why the Fan Runs When the Door Is Open
A constantly running fan suggests:
- Faulty Door Switch: The switch should turn the fan off when the door opens.
- Wiring/Board Issue: The 2022 main board replacement might have a loose connection.
When to Call Appliance Repair Rochester
DIY fixes work for minor issues, but persistent frost often requires professional expertise. Our technicians:
- Diagnose hidden issues (e.g., evaporator coil leaks, sensor malfunctions).
- Provide same-day heater/thermostat replacements.
- Offer a 90-day warranty on all repairs.
📞 Schedule Service Today: +1 (507) 322-7341 | Serving Rochester, MN, and Surrounding Areas.
Explore our another recent experience: How I Fixed Byron City Resident Frigidaire Ice Crusher Issue
Local Resident ask Questions About fixing frost in GE Refrigerators
Why is my GE refrigerator freezer frosting up?
Your GE freezer is frosting up because the defrost system isn’t working correctly. The defrost cycle should melt any ice that builds up, but if the timer, heater, or sensor fails, frost can accumulate. Also, a broken door seal or frequent opening of the door can let warm air in, which adds to the problem.
Why is my GE refrigerator freezing food in the refrigerator?
If food in your GE refrigerator is freezing, cold air from the freezer might be flowing into the fresh food area. This can happen if the air vents are blocked or if the temperature is set too low. Rearranging items to allow better air flow and checking the thermostat can help fix the issue.
How do you fix a freezer that keeps frosting up?
To fix a freezer that keeps frosting up, first check the defrost system. Make sure the timer, heater, and sensor are working properly. Next, inspect the door seals to ensure they are tight, and clear any blocked air vents. Cleaning out excess frost and setting the correct temperature can also help prevent future frosting.
Why is my GE refrigerator ice maker freezing up?
The ice maker in your GE refrigerator may freeze up if it is exposed to too much cold or if moisture builds around it. Problems with the defrost cycle or a faulty water line can also cause ice buildup. Checking these areas and ensuring the temperature settings are correct can stop the ice maker from freezing up.
How do you unclog a defrost drain on a GE refrigerator?
Unclogging a defrost drain is simple. First, unplug the refrigerator for safety. Then, locate the drain hole in the freezer and remove any ice or debris blocking it. Use warm water, preferably with a bit of mild detergent, to flush out the drain with a turkey baster or small funnel. Once the water flows freely, your drain should be clear, helping to keep your refrigerator running smoothly.
Why Local Homeowners Trust Us
