Hello my freezer is not cooling properly and the defrost timer is . making a loud buzzing noise. Please help

When you shut your top wire shelf you do a few things. First of all you activate your fan. Your fan sits in back of a large evaporator coil which is prone to defrost issues. I would imagine your fan is hitting ice due to a defrost issue. You may want to check your defrost system out. Ie your defrost timer.
or alternatively your fan could be getting old and needs replacing, it could just be making noise.
Joe B, Certified refrig.

Hello,

Depending on model it have a defrsot timer or perhaps a electronic defrost control but they usually will be located in the control panel if you have a knob used to set the tempature and if it has a digital display that you set the temp. by pushing the button on the front it will have a defrsot control and thats not so easy to put into defrost as the timer is.

Please reply with exact model number as found on the label in the fresh food compartment and i will tell you if you have a defrost timer or electronic control


GENE

Is it coming from inside the freezer or outside? If outside either the auto defrost timer is a problem. If the noise comes from the compressor, almost certainly the starter relay inside the electrical cover needs to be replaced. It can be purchased at most refrigeration outlets. If coming from inside, you need to defrost the freezer properly for 12 hours then restart. The noise should go away then.

Hello,

Insufficient cooling is a fridge repair job that you can do without the help of a professional. Often the fridge has a frost-free failure, or the compressor is faulty but there are many other reasons for a fridge not cooling properly.
Step 1 - Find the Problem

Your first job is to locate the source of the problem. Consider each of the following:

* Gaskets - Make sure the gaskets/seals are not torn and are sealing properly.
* Evaporator fan - Make sure it is working. If it is now working you may have a problem with the fan motor. Check for power to the motor and also examine the fan switches around the door (not all fridges have these switches).
* Air damper - Sometimes the air damper will not open up to allow the cold air from the freezer part to blow into the fridge section.
* Condenser coils - Check to see that the condenser coils don't have a dust build-up and that the condenser motor is working.
* Compressor - Make sure your compressor is working with on and off clicking noises.

Step 2 - Frost-Free Failure

This is the most common cooling problem in fridges. Expose the evaporator coils by accessing the panel in the freezer section. The coils in the freezer section can sometimes get clogged up with frost. This can stop the evaporator fan motor from blowing cold air around, or cause the fan to hit it and stop, or become noisy. The defrost timer can be a bit tricky to find but it is usually located behind the back bottom corners of the fridge, although they can sometimes be found in the ceiling of the fresh food section, or behind the cold control cover.
Step 3 - Find the Timer

When you find the timer, turn the wheel-like screw slowly with a screwdriver until the fridge shuts off. The refrigerator is now defrosting. If you find that the fridge starts now, you will need to replace the defrost thermostat and the defrost timer.
Step 4 - Volt Test

If the heaters do not come on, use a volt meter to ohm test the defrost heater or volt test for 120 volts to the heater. You can bypass the defrost thermostat if you haven't got power to the defrost heater to check if the defrost heater will come on. To bypass the thermostat, join the two wires together. Replace the defrost thermostat and the defrost timer if the heater comes on now.

If there is a ticking or squealing noise in the defrost timer, or it seems hot to touch, replace it.

Many fridges have and inline fuse on both sides of the defrost heater. You will need to replace the whole heater if one of those fuses blows. Check these fuses with a volt meter if the defrost heater doesn't work.

A quick check if you have a cooling problem is to inspect the evaporator coils. If there is a build up of white snow on the coils, this indicates a frost free problem; if there is balled ice on part of the coils with the rest bare, this indicates a system problem, like a problem with the pumping compressor.
Take care in solving the problem....

Hi,
Check out these tips...they can help you figure out whats going wrong...

Refrigerator not Cooling or Fridge not Cooling
http://www.fixya.com/support/r3662945-refrigerator_not_cooling_or_fridge_not

How to Defrost Refrigerator Defrost Timer Problem
http://www.fixya.com/support/r3771673-defrost_refrigerator_defrost_timer


Water Running in Refrigerator from Freezer
http://www.fixya.com/support/r3780310-water_running_in_refrigerator_from

heatman101

This would indicate moisture is getting into the freezer and not getting out.
Run a manual test of the defrost cycle.

Hi,
Check out these tips...they can help you figure out whats going wrong...

Refrigerator not Cooling or Fridge not Cooling
http://www.fixya.com/support/r3662945-refrigerator_not_cooling_or_fridge_not

How to Defrost Refrigerator Defrost Timer Problem
http://www.fixya.com/support/r3771673-defrost_refrigerator_defrost_timer


Water Running in Refrigerator from Freezer
http://www.fixya.com/support/r3780310-water_running_in_refrigerator_from

heatman101

Since I could get no one to tell me about new freezer compressor making buzzing noise while on, I had the store come a pick it up and give me my money back.

The defrost timer is located in the mechanical compartment, back by the compressor and condenser.

Lots of stuff can cause noise. The only moving part in the freezer is the fan. I don't know of anything else that moves. If ice build up is an issue, then there are several things to concider.

Not enough defrost time. Cycle too short or heaters are not hot enough for some reason. Could be undersized heaters from manufacturer.(?) Defrost timer could be bad causing short or no defrost at all. This timer also controls the defrost heaters and compressor being off during defrost.

Be sure the seal around the door is tight. No air gaps. Warm air (contains moisture) will cause freeze ups. Long shot is that the thermostat is bad and unit never shut off. If timer is bad, compressor coudl be running during defrost cycle.

Hope this helps