Our fan went out on our chest freezer, so I took a fan from another freezer and switched them out, but after we plugged it back in, the fan works fine but there is what looks like a small electronic switch then every 5 full seconds or so it clicks and then a second or two after that you hear a noise from inside the compressor (almost like air releasing). I had to open the lil box that all the electronics are connected to and when I put it back there was one wire that I don't know where it goes. I did not see it at all when opening it. Its one of two wires comming for a cylinder shaped thing, all the other freezers have a very similar cylinder. I've been trying to find a schematic, even for just a basic chest freezer so I can find where exactly that should be hooked up to (without luck). The freezer was unplugged over night, We're not sure if that noise might just be normal untill it gets back down to freezing temps or not. Sorry so much information, if you need any more just ask. A schematic or any information would help extremely. Thanks.
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It may be on "superfreeze", if there is a yellow light, or it may be set for too low a temperature (try setting the thermostat down to 1 or 2). Check the condenser is clean, and fan working if it has a fan, Check lid is closing properly and the ambient temperature isn't too high.. Lastly, if all else working correctly, suspect short of refrigerant.
A noisy chest freezer can be more than aggravating, it can also be a sign that something may be wrong with the appliance. With a little investigation, you will be able to find the cause for the noise so that you can determine how to rectify it.
Self-defrosting If you chest freezer is a self-defrosting variety, you will find that it has a fan on one of the inside walls that enables this process to take place. Open the door and check whether this makes the sound worse; if this is the case, the problem is likely to lie with the fan. Ensure that it is not blocked by any food items or ice and is running properly. Clear away any items that are blocking it and tighten any loose fasteners. The motor that runs the fan can also cause a noise if it is old or defective and is struggling to continue running, if this is the case, the motor will need to be replaced.
Door Seal Examine the door seal of the chest freezer to ensure that it is intact and has no defects. If there is a problem with the seal, it can prevent the door from closing properly which will force the freezer to work harder as it will also be cooling the air around the freezer. Replace the door seal and ensure that the door is able to close properly to see if this reduces the noise.
Element The wire element that is either located on the rear or the base of your chest freezer. The element can often become noisy after getting covered in dust and debris. Rectify this by switching off the power supply before vacuuming the element. Carefully use a cloth to clean any other surrounding components that are affected by stubborn grime.
Ice Build Up Where your chest freezer is unable to regulate itself, you may find that it can suffer a buildup of ice. When the ice become sufficiently thick, it will stop the freezer from being effective and will force the motor to work harder in order for it to keep working. Prevent this problem by defrosting your freezer on a regular basis or whenever it is required.
Condenser Fan The condenser fan is likely to be located at the rear of the freezer and can become noisy if it is defective or covered in dirt. After switching off the power supply, use a cloth to clean the blades of the condenser fan if you find that the noise is coming from this component.
Compressor The compressor is the black box that you will find on the base or rear of your freezer and is where the normal noise of the running the freezer comes from. The pipes and wires necessary for the freezer to work stem from this box and can become noisy if there is a problem, which is more likely with an older appliance. A defective compressor cannot be repaired so it will need to be replaced.
Is your circulating fan working?
Sometimes they stick and need a shot of WD 40 and then work
it back and forth a little until it wants to take off again. Keep me informed
and PLEASE give a Thumbs Up for the effort. The Raz Shack
I would think that the reason the red power wire melted, was because of high amperage, not getting wet. After you replaced it the condenser fan came on, but did the compressor? It may have went out before and that's what caused the bad wire. If you have a volt/ohm meter I can help you check it out.