My 6 year old kenmore has started freezing up and I have to manually defrost it. Doesn't do this all the time. Works for 3, 6, 9 weeks then get frosty inside or the drain whole freezes up and water goes into frig. It is real consistant. Appears that sometimes the defrost cycle works other times it doesn't.
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Re: Kenmore 71192100 frost free keeps freezing up
Hi. thanks for the question . The first thing i would do is clear the drain tube .that could be why the freezer ices up .too much moisture Clean the drain, And the coils at the back. thanks the appliance doc
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If there is no cooling at all , before we go further we must confirm the first step of confirming the compressor and gas pressure. So shut off the fridge and leave it off while you clean and check the evaporator for frost. If frost is seen it is a good indication as the compressor is working with sufficient gas within. Now after about 6 hours plug in the fridge to start. Observe cooling to happen in about one hour and ice to from under three hours. However if Ice forms then observe the fridge for about 24 hours for cooling to continue and the fridge to cut off . If not the auto defrost timer, or the thermostat must be checked. If defrost timer works but frost keeps forming check while the compressor shuts if the heaters are working, check continuity of the heaters. So try this test from the outside and make your observations so that we come to the solution.
Remove the access panel in the freezer section to expose the evaporator coils. If the coils in the freezer section get plugged up with frost, this frost will block the evaporator fan motor from blowing the cold air around. The fan blade can also hit this frost and either become noisy or stop altogether. Locating the defrost timer can be tricky....they are often hidden behind the back bottom corners of the fridge at the bottom, in the last few years the timers have been located in the ceiling of the fresh food section, and some behind the cold control cover. Once you locate the defrost timer, slowly turn the screw like wheel in the middle of the defrost timer with a straight screwdriver until the fridge shuts off. You are now in defrost. If the defrost heater(s) comes on now, replace the defrost timer and defrost thermostat. If the heater(s) does not come on, you can ohm test the defrost heater for continuity or volt test for 120 volts to the heater(s). If you have no power to the defrost heater(s) you can also bypass the defrost thermostat to see if the defrost heater will come on, join the 2 wires together to bypass the defrost thermostat. If the heater now comes on, replace the defrost timer and defrost thermostat. If the heater itself is bad, defrost the fridge with a hair dryer, replace the defrost heater* and defrost thermostat. If the defrost timer seems "hot" to the touch or is noisy ( like a ticking or screeching noise )...replace it.
I you might have a defrost problem. Frost free models have a heating element that is controlled by a timer to automatically defrost ice, defrost timer turns on defrost heating element every 12 hours to melt ice in freezer and allow good air flow. You can test defrost element with an ohm meter(located inside freezer coils-will have two wires going to a plug connection), if OK replace defrost timer (located in various places depending on make and model
All frost-free refrigerator-freezers have a thing in the system called
a Defrost Timer. The thing is a little clock of sorts that tracks
accumulated running time. Every 8 hours of run time the thing cycles
through a defrost cycle. The defrost cycle is necessitated by the
humidity that forms ice crystals on the freezing coils, if the frost is
not eradicated it can build up to the point where no air flows over the
coils to chill the inside of the box. The Defrost timer in all boxes
fails eventually from old age. When that happens, the coils frost over
until they become pretty much just a solid block of ice. Your case may however be the exception, as it seems likely that the timer quit during a defrost cycle. Most timers
are located on the front of the machine, behind that removable grille
under the door. The timer has a round hollow shaft through it, and can
be turned with a screwdriver. If the compressor is not running, give the
shaft a slow twist until a click is heard. The compressor should start. If it does, check the fridge in 12 hours to make sure it is not stopped again. Sometimes the nudge will make the timer run for a
while. You will need to get a replacement timer. If that doesn't make it take off you should call a servicer.
Do you have any frost buld up in freezer compartment?if so sounds like a freezing issue.If no frost build up is your fan running in freezer part if not you may need evap fan or a manual defrost.Your fan may have ice stoping it from turning.If your fan is running you may need to pull off your start switch located on your compressor.Shake it around if you here noise like burnt parts in it you will need a start switch.And remmember never turn your fridge up full blast normal is good or you will freeze it up. Good luck:)
Look for problems you can see. Check for frost on the back wall of the freezer, If you find frost on the back wall locate the defrost timer and rotate the clutch head screw clockwise SLOWLY until you hear one click. With the timer now in the defrost position you will hear sounds in the freezer compartment such as expansion, sizzling, after a few minutes. If after say 25-30 minutes the system does not return to cooling mode ( Compressor starting) rotate the timer again SLOWLY until you hear a second click. This would indicate a bad defrost timer. If you get no defrost your problem could be a defect in the heater circuit such as an open heater or defrost thermostat. Normal defrost time would be 18-22 minutes.