There’s nothing worse than opening your RV fridge and realizing it’s warm inside—especially when you’re hours from the nearest repair shop. RV refrigerators are notorious for being finicky, power-sensitive, and vulnerable to movement, making them one of the most commonly reported RV issues.
If your fridge is running but not cooling—or worse, not running at all—this guide will help you understand what’s causing the issue, how to troubleshoot it, and when it’s time for professional repair.
❄️ Common RV Refrigerator Issues and What They Mean
RV fridges operate differently from residential models. Most use absorption technology and can run on:
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Propane (LP gas)
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120V shore power
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12V battery power (for control board & fans)
This versatility is great—but it also means there are more potential failure points.
✅ Most Common Problems:
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Fridge clicks on but doesn’t cool
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Strong ammonia smell near the fridge
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Interior light works, but no cooling
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Water dripping inside or outside the fridge
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Freezer cold, but fridge section is warm
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“Check” or error lights flashing
🛠️ Step-by-Step Troubleshooting
1. Check Power Source
Start with the basics:
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Is the RV level? (Absorption fridges must be level to function properly)
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Is your battery charged?
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Are you connected to shore power or using propane?
Fridges that rely on absorption cooling need to stay perfectly level for proper fluid flow. Running off-level—even briefly—can cause long-term damage.
2. Inspect the Control Board
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Look for flashing error codes or “Check” lights
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Reset the control panel (often a simple on/off cycle)
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On some models, test with a multimeter for 12V input
3. Test the Heating Element (Electric Mode)
The 120V heating element could be burned out.
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If the element doesn’t draw power, cooling won’t happen
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Often requires removing the fridge for full access
4. Switch to LP Gas Mode
If electric isn’t working, try running the fridge on propane.
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Do you hear the ignitor clicking?
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Is the flame lighting?
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Clean any soot or blockages from the burner assembly
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If you smell propane without ignition, shut it off and inspect immediately
💡 When Only the Freezer Cools
This often indicates:
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Blocked airflow between the freezer and fridge compartments
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Faulty thermistor (temperature sensor)
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Failing cooling unit on older models
Airflow is essential. Some models rely on fans to circulate cold air from freezer to fridge—if a fan fails, the lower section won’t stay cool.
🧊 Signs the Cooling Unit May Be Failing
The cooling unit contains ammonia, hydrogen, and water in a sealed system. If the chemical mix leaks or crystallizes:
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You’ll smell strong ammonia
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There may be yellow or white residue at the back
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Fridge may never reach cooling temperatures, despite running constantly
Unfortunately, once the cooling unit fails, replacement is usually the only option.
🧽 RV Fridge Maintenance Tips to Prevent Issues
Stay ahead of problems with these preventative tips:
🔧 Quarterly Maintenance Checklist:
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Clean the burner assembly (LP mode)
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Check and clean all exterior fridge vents
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Test for airflow inside with a paper strip or small fan
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Defrost regularly to prevent ice buildup
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Make sure fridge is completely level when stationary
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Run the fridge at least monthly, even in off-season
✅ Bonus Tip: Install an internal fridge fan to improve cooling efficiency in hot climates.
🧯 Safety First: What Not to Ignore
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A strong ammonia smell is hazardous—turn off the fridge immediately and ventilate the area.
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Don’t run an RV fridge on propane while driving unless it’s fully vented and allowed by local laws.
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Never cover or block exterior fridge vents; this leads to overheating and fire risk.
📞 Mobile RV Fridge Repair in Florida
Whether it’s an electrical issue, a failed cooling unit, or your fridge just won’t stay cold—Boondocks Mobile RV can diagnose and repair most refrigerator issues on-site without hauling your RV to a shop.
📞 Call (813) 460-8565 to schedule RV refrigerator service wherever you’re parked in Central Florida.