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There are two fans running on a side by side, one is behind the back freezer panel on the side of the freezer side( if it is iced up the fan blade could be hitting ice) May be a defrost problem...... (this fan circulates air from the freezer side to the refrigerator side, as the air is pulled through the coils heat is removed)
The second fan is in the back, you have to pull out unit and remove lower back panel to listen and or look to see if condenser cooling fan is running quiet or the compressor right next to it. Could be this fan blade is hitting something or a bearing going out.......
If the compressor is making the noise you are probably not going to repair it.....
Lastly on some there is a defrost timer motor usually found by the thermostat but not always that could be making noise(least likely) May have a adaptive defrost control board, not sure.....
Don't worry about the line, it is supposed to be the way it is. If you are talking about the condenser coil, located on the back bottom part of the unit, with a small fan in front of it, yes, it is supposed to be hot.
The condenser job is to disipate the heat absorbed by the evaporator (the coil inside the freezer). Make sure the condenser is clean and condenser fan is working, also, make sure there is air circulating thru the back of the unit to help cooling the condenser.
The noises you hear, are probably the defrost coil melting the ice on the evaporator, this function is on a timer and happens 3 or 4 times a day.
A hot compressor and freezer not working properly can be a few things.
1. The Compressor may not be running at full speed due to a dragging rotor or a bad run capacitor. Additionally a weak thermal overload / Klixon and or PTC relay on the compressor itsdel can cause the same symptom.
2. The Evaporator is clogged with ice due to a defrosting problem causing poor airflow through the evaporator coils and lower freezer temps.
Here is what I recommend you do first off.
A. Unplug the unit for about 30 minutes to allow the compressor to cool down. At the end of that 30 minutes just as you plug in the unit have someone listen to make sure the compressor starts and runs properly. If it runs properly at that point it can still be any of the items described in paragraph 1. above.
1) Montor the temps after the 30 min off period for 24 hours. If it is normal fine. If not see next paragraph.
B. Poor freezer temp condition persists perform a MANUAL defrosting:
Again unplug the unit. Remove the contents of freezer and place a fan blowing into the freezer section for a little 2 hours. This will make a water mess so be prepaired. After the 2 hours plug the unit back in and reload the freezer contents. 4 - 6 hours later check your freezer tremos to see if they have returned to normal. If the temps are normal your unit has a problem with the defrost cycle and will require further service to correct the defrosting problem.
There is a bit more but the above is a good start. If you stillhave the problem reply here and we can go into the defrost circuit or compressor troubleshooting procedures.
The fan you should replace is called the condenser fan. It's the one that blows air across the outside coils. When it fails, you'll usually notice abnormal heating of the front of the divider between freezer and fridge.
Is it hot all the way around, or just on the face of the divider between the freezer and fridge? If it's just the divider, then it's probably not a defrost problem. When that divider gets hot, it usually means there is inadequate air flow over the condenser coils outside the unit.
When the compressor is running, check for air blowing under the unit. If no air is moving, then you probably have a failed condenser fan. If the fan is running, then use your vacuum cleaner to clean the coils, and make sure there is space behind the fridge for air to flow.
Dont know about the noise prob. but I can help with the over heating cabinet. Your condensing coil is dirty and needs cleaned. it is located under your refrigerator or behind the back panel. You should use a brush and vac. it out. Air must travel through the tubing freely in order to cool properly. It should be easy to find following the tubes coming out of your compressor.
Sounds like you have a plugged drain line remove thwe bottom drawer and look in the pan see if the little drain hole is frozen over if so use a hair dryer to unthaw and pour a glass of hot water down to make sure it is clear it will go into the pan under the unit if it still wont run free use a Turkey baster to blow out the drain line as something is stuck in it
check freezer for frost build up and if fan blowing, check condenser make sure clean, and fan blowing, by compressor
Make sure compressor is running and not shutting off on overload.. u said comp. hot.. should be warm... Not hot
check vents in refrig. make sure no blockage, freezer control should be in the middle setting,
you can try turning that to Warmer freezer allowing MORE air to refrigertor side.
check freezer for frost build up and if fan blowing, check condenser make sure clean, and fan blowing,
check vents in refrig. make sure no blockage, freezer control should be in the middle setting, you can try turning that to Warmer Freezer allowing MORE air to refrigertor side.