Dometic 2652 frig. temp up and down
2000 class A frig, last week on 120volt only it was 15* in freezer and 35* in frig. this week the freezer went down to about 20* then up to 30*. the frig got down to 40* then up to 50* I have propane shut off, and plugged into 120Volt, I took the side vent off, the cooling unit was very hot, then took the top cover off roof vent and every thing looked ok. when I had both covers off it seemed to get about 10* cooler. do I need to clean out the flue vent stack? I am new to this, thanks
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