Question about Maytag MSD2756GES Side by Side Refrigerator
My fridge is not defrosting. I pulled out the heating element and it appears to not have any resisitance across the contacts. If it is resistance heat, why is there on resistance. It is also curved down badly. I do not know for usre if the element is broken or if the controller/timer board is bad. It is a Maytag model MSD275GE.
Most refrigerators and freezers are frost-free. In this type of unit, a heater is automatically turned on by a timer in order to melt the frost inside the unit. Frost is melted by the heater at several different spots in the unit, starting with the coldest and most frosted areas. When the frost is completely melted, the thermostat automatically switches to a cooling cycle in order to maintain the standard freezing temperature. Because this process is automatic, frost does not build up inside the box.
The unit's compressor system, which forces the coolant through the coil system, is driven by a capacitor-type motor. Other basic parts of the cooling/defrosting system include switches, thermostats, heaters, condensers, and fans. A do-it-yourselfer can test and replace many of these refrigerator components.
Servicing the Defrost Timer If the compressor doesn't run, it is likely that the defrost timer is malfunctioning. This part is located near the compressor. To test the defrost timer:
Step 1: Unplug the refrigerator.
Step 2: Disconnect the wires from the timer and timer motor. Remove the timer from its brackets by backing out two retaining screws.
Step 3: Test the defrost timer with a VOM set to the RX1 scale. Clip one probe of the VOM to each defrost timer -- not motor -- wire, and turn the timer control screw shaft until it clicks. If the defrost timer is functioning, the meter will read zero. If the needle jumps, the defrost timer is faulty. Replace it with a new one of the same type.
Step 4: Connect the new defrost timer the same way the old one was connected.
To check the defrost timer motor, clip one probe of the VOM to each motor wire, setting the scale to RX100. If the meter reads between about 500 and 3,000 ohms, the motor is functioning properly. If the meter reads higher than 3,000 ohms, the timer motor is faulty. Replace it with a new one of the same type. Connect the new motor the same way the old one was connected.
Servicing the Defrost Heater
This component is a heating element located on the evaporator coil. When the refrigerator or freezer switches to the defrost cycle, the defrost heater is turned on to melt the frost in the compartment. Failure of the defrost heater causes failure to defrost.
Test the element with a VOM set to the RX1 scale. To gain access to the heating element, remove the compartment's wall panels. Clip one probe of the VOM to each element terminal. The meter should read between 5 and 20 ohms. If it doesn't, the heating element is faulty and should be replaced. Replace the heater with a new one of the same type and electrical rating. Connect the new heater the same way the old one was connected.
Posted on Jun 05, 2010
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Posted on Jan 02, 2017
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