I discovered that my fridge did not defrost. I diagnosed the problem to the control board.
I replaced the control board with one I ordered from Sears. After installing the new board it flashed (turned on then off then on, etc.) "0" and "0" in the temperature settings display (one for fridge the other for freezer). The compressor did not switch on.
Why is the display flashing? Is there some turn on sequence or reset procedure? I tried unplugging the power and replug the power but no change. All lights in the fridge worked.
The board came in a box labeled "MAYTAG BOARD - CON 67006740". The new board looks identical to the old except a sticker on the old saying "JAZZ10" and the new says "JAZZ14".
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It maybe something wrong with defrost system or maybe the evaporator fan motor is not working open the panel of freezer back wall and see if its iced up all over but the fan is working then you need to locate the defrost timer on your fridge in some fridges there is no defrost timer it controlled by the electronic circuit board in that case just defrost the ice so it will start working again for few days and its better to call technician because it will be hard for you to diagnose that which part need to replace. Just for your information if the fan is working on your fridge then there are three things which need to get checked 1. Defrost timer of Defrost Board 2. High Limit Thermostat and 3. Defrost Heater
Sounds like you simply have a defrost problem going on.
Without the model number that looks like this 321.456789 example I am not sure
what parts you will need. If you can find your correct model number I can show
you what to look for. Things that fail with a defrost problem are defrost
heater, defrost thermostat and defrost control or timer, ThanksSea Breeze
The main control board is probably the problem . Part number WR55X10656 . This board controls the operation of the fan motors and everything else on the refrig . This is also the " defrost timer " . However , the coils frosting up , is probably because the fan motor is not pulling air across them . Not because of a faulty " defrost timer " . This board is located on the back of the refrig , behind an 8"X10" panel . Usually a resistor burns out relating to the fan motor operation . Cannot replace the resistor , only the board .
If it's the freezer control you keep at 9, it's probably a defrost problem. If the evaporator coils behind the back panel of the freezer
are icing up because of auto defrost failure that will stop the circulation of
cold air and eventually affect the freezer too.
check defrost timer, defrost heater, defrost thermostat. In
most newer models the timer has been replaced by an electronic control board.
If the heater and thermostat are ok it’ll be the control.
You can turn the defrost timer till it clicks
and everything shuts down. The heater should now come on. If it does, replace
the timer. If it doesn't, check the heater and defrost thermostat. Turn the
timer again till everything starts back up to end the defrost cycle.
If it's the fridge temp control you're talking about The fridge gets its cold air from the freezer through a vent(damper)
between the freezer and fridge.The fan in the freezer blows air through
it.There is a flap you adjust with the
fridge temp. control. Make sure it's opening and closing when you adjust the
fridge temp ..
Great advice from medeer, I had the same ER DH error code, and my refrigerator began to warm up. I replaced the defrost thermostat assembly part # 6615JB2005H which is located inside the freezer, on the right side behind the white plastic panel. I accessed it by removing the freezer door, all components inside the freezer, and the tracks mounted on the sides of the freezer. Be careful when removing the white panel because a fan is mounted to the left side of the white panel and plugs into the back left side of the freezer compartment.
Found the green technical data sheets under the refrigerator in a small plastic bag near the front.
My refrigerator is 20 months old, just a few months past the warrentee,