I keep having to manually defrost the coil in the freezer cause it won't defrost. It takes a couple of months to get where the fridge starts warming up, then I open up the back of the freezer and use a heat gun to melt out all of the frost. So what is not working to make it not defrost? Thanks.
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The defrost circuit is not working, there are usually 3 things that normally go bad, defrost timer, defrost heater, and thermal switch. Would have serviceman check it out as cooling fins on coils will cut you like a razor.
yes, dust build-up will cause over-heating and burn-out the defroster circuit-board....you will need to have serviced to see which control board failed for sure. Keep those vents clear....every couple of months vacuum them.
clean out all the vents,syringe the drain holes with clorine bleach,check the door seals for air tightness all round...after a full defrost(do not help it with a hairdryer as this only defrost the ice you can see....try to defrost it when you can leave it for 24/36 hours....with the doors open and switched off....then dry thoroughly.
you either have a blocked drain in the freezer or a bad, failing defrost element, timer.
If you have a manual for you fridge you can locate the place to check for blockage in the drainline. I you dont have a manual you can check online at searspartdirect and locate one.
The heating element for the defroster is located right beneath the freezer coils so you need to take the inner panels off the inside of the freezer to get to those.
You can replace the heating element and timer fairly easily. You should be able to buy both of them for around 90-100 bucks if necessary. But try clearing the draining first. You can test the line by defrosting the fridge and pouring some water into the drain and see how quickly it goes into the drainpan below the fridge.
defrost problem,check,freezer fan,remoce freezer back panel,check heater,find and check defrost timer,most are in the frig.if it is manual put it in defrost then check to see if the heater ib the freezer comes on,if it does then you have a bad defrost timer,if not,the freezer heater or terminater(attached to coils)is bad,chevk with your meter,let me know-mike
repl the defrost timer and and defrost thermostat the defrost thermost sists right on top of evaporator coils and if it looks like it explode then that is your problem but it looks ok then repl both timer and defrost thermostat , you didn't give enough info on model but if you repl both parts that will solve the defrost problem if you take your model# and buy the parts you will fix this under 200.00
your having a defrost promblem either the adc-auto defrost control board is bad or the defrost termination thermostat is bad or the heater is bad thats rare but does happen if you will open the refridgerator door and get me the model number off the serial plate on the toop of the compartment just look up when you open the door then let me see if it has an adc or timer i can reply and be more spefic about fixing your promblem hold my rating till we are done ok