Question about Maytag MSD2756G Side by Side Refrigerator
Refrigerator Model MSD2756GEW, S/N is 15716924AC. The auto defrost function was non-op. The defrost thermostat checks OK (0 ohms at < 10 deg F, 240K ohms > 10 deg F). The defrost heater measures 21.3 ohms. Could not force the defrost cycle to start by shorting L1 and Test pins on the Adaptive Defrost Control board. Conclusion: ADC bad. Purchased a replacement (p/n 61005988). Installed it and it failed within 2 days. Got an exchange replacement. Before installing the 2nd ADC, I would like to know if there's anything I've overlooked and whether the defrost heater resistance is within acceptable range for this unit.
21.3 ohms is just fine for a defrost heater. this heater is low wattage since it is an adaptive defrost. you could have problem with temperature sensor since you have replaced the board already.
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Posted on Sep 30, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
It is quite common for a refrigerator to begin the first signs of a defrost problems once he fresh Food section begins to warm. Auto Dampers are an additional component to check while searching for the true reason for Fresh Food compartment warming. First look inside the freezer compartment and and see if there is a layer of frost building on the rear wall. If yes you will need to manually defrost unless you have anothr place to store the freezer goods. Unplug refrigerator and then remove the rear panel of freezer to get a good look at the snow covering your evaporator coils. Defrost with a hair drier. Now we need to look for the cause Auto Damper, Click here for the photo location of these parts=> MSD2756GEW Controls Section the adaptive defrost control is most likely the problem and is listed in the photo as location 13 and the auto damper
The Auto Damper model refrigerator has two controls and both have capillary sensing.
The Auto Damper controls the fresh food temperature and the Freezer Temperature
Control guides the freezer temperature. The fresh food compartment temperature is maintained by a damper assembly located at the back of the temperature control housing. Changes in air temperature cause the damper door to open and close. A control rod and gear connect the fresh
food control knob to the damper control.
Turning the fresh food control knob to the coldest position increases the flow of freezer air into the fresh food section. The freezer compartment temperature control warms at a faster rate and cools at a slower rate, increasing the compressor run time necessary to maintain a satisfied freezer temperature control.
Click Here=> Here is how to test a Maytag MSD2756GEW Auto Damper
There is always other possiilities but I see two other things that may cause this and that is the defrost heater with defrost Thermostat=> 61006199 Defrost Heater Assembly
I know this was long and possibly confusing but please ask if you should have questions or one on one assistance, Thanks, Sea Breeze
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