Question about Refrigerators
I want to set the timer at 6am and goes off at 7am to used to defrost the freezer that icing up .
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Posted on Jan 02, 2017
SOURCE: Freezer Troubles
Skap, the question is whether the evaporator coils are completely frosted up or just the top section. Frigidaire has had a lot of issues with restrictions which would cause just freezing on the top half. I will attach some pictures. Your unit has an adaptive defrost. I believe that you can advance it into defrost by pressing the light switch 5 or 6 times. If you pull the bottom grill, there should be a tech sheet with the instructions behind it. Usually when this adaptive defrost unit fails, you will not have a freezer fan, for it runs through this adaptive defrost board. Your heaters are calrod and usually do not fail. They can become unplugged due to ice build-up. You can check to see if you have 120V getting to them after putting the unit into defrost. If not, check the defrost thermostat (bi-metal). If it's bulged, it's usually a bad sign. Defrost the unit with a hair dryer while unplugged. You have to remove the back freezer panel to get at the bi-metal, defrost the unit and check the drain pan.
Posted on Sep 11, 2006
SOURCE: Freezer defrosts too long.
Outside of HVACRH20 excellent advice, here a few stats about this model. The main control board will monitor the resistance of the evaporator thermistor. This is located near the top of the evaporator. This thermistor determines when the unit goes into and out of defrost. The bi-metal is redundant to the operation. It will terminate the defrost only if the thermistor fails. Check the values of the thermistor with the attached chart. Catriver..post back
Posted on Jan 28, 2007
SOURCE: fridge doesn't get cold enough
you have either a Defrost heater / a defrost timer/ or a defrost bi-metal that is bad. if you post your model # i can look it up and show you how to set it into defrost to see if the heaters are ok
Since you replaced the timer already that leaves two things you need to check set it into defrost if you know how and remove the panel in the back wall of the freezer you should see the heater(s) are on if not check pwr 120vac at the heaters if 0 volts the bi-metal is bad
Posted on Feb 22, 2008
While the freezer is cold, cut out defrost thermostat and measure
resistance, if open, replace, if it's ok check defrost heater.
Temporarily short the wires that went to the defrost thermostat and now force defrost.
If no defrost, you have a bad adaptive defrost board.
Posted on Aug 29, 2008
Here is the Amana website with the manuals which should show you where the defrost timer etc. is located. Witht your model number and manual it will be a lot easer
And yes the defrost timer thermostat and heater are the most likely problem.
Do not let this keep running and running or you may lose your compressor too which means a lot more expense than now.
Posted on May 09, 2009
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