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I don't think a UPS will help for a GFCI tripping. There's something on the circuit that the GFCI is powering that's causing the trip. Usually it's moisture getting into/onto the plug, or it could be moisture getting in the contacts somewhere in the freezer. I'm guessing your freezer is in the garage, or on a back porch - both areas can see enough humidity in the air to trip the GFCI. The UPS will filter (clean) the power going to the freezer, but I don't think it will filter any feedback coming from the freezer to the GFCI. My suggestion is - first, try to find the source of the moisture (could even be insects). If it all seems to be dry, I would replace the GFCI with a normal (non-GFCI) receptacle.
Sorry, there was a problem. Please try again later.If your GFCI is tripping because it's finding unsafe conditions, a crucial questions is whether there really are unsafe conditions (like a short in your freezer), or if your GFCI is broken. If you replace the GFCI and the problem continues with the new one, that would certainly indicate you have a potentially life-threatening issue with your freezer (or the wiring leading to it) that you would really really want to understand and solve.
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