Question about KitchenAid Refrigerators
My evaporator freezes up & wondering if there is a test to see if the board is bad or the defrost heater element is bad. freezes up to the point the fan bladed hits on the ice build up.
Heater and bi-metal defrost thermostat can be tested for continuity with an ohm meter. If both of them are good, then board is bad.
Posted on Oct 05, 2018
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Posted on Jan 02, 2017
SOURCE: evaporator not defrosting
element can be checked by continuity test, you should have continuity through it. theres a defrost thermostat clipped to the top of the evap also common to go bad.. closes at specific temp ( written on side of thermo) allowing heater to come on, if it remains open the heater wont be energized
Posted on Mar 07, 2008
Could be that, or it could be the temperature sensor on the evaporator - if that goes, then as soon as the freezer starts a defrost cycle, it will think it's got the evaporator hot enough and will start cooling again.
Suggest you let the freezer thaw out then, with a voltmeter connected across the terminals on the board which connect to the sensor, turn the freezer on and see if the sensor reacts sensibly to the evaporator cooling down. It's usually done with a thermistor, but just for the moment, I can't remember whether it's usually a PTC or an NTC.
That way, if it is the sensor, you'll be spared the expense of replacing a serviceable pcb.
Posted on Apr 13, 2008
check the defrost bimatal or defrost thermanstat it will be located on the evaperator suction line (large line) it should read continuity with the ref cold if it showes continuity then the defrost timer is the problem
Posted on Apr 13, 2008
TAKE AND DISCONNECT THE POWER TO TH UNIT AND ON THE VERY BACK THERE IS A CONTROL BOARD THE IS UNDERNEITH A WHITE PLASTIC COVER THAT YOU WILL HAVE TO REMOVE THEN DISCONNECT AND RECONNECT THE WIRES TO THE CONTROL BOARD AND SEE IF THAT DOESTHE TRICK.
Posted on Mar 07, 2009
It is possible you have a defective fan motor in the condenser area or evaporator area. Sometimes when they become defective they will run for a while and just warm up and stop while the compressor continues to run. I learned that one on four costly returns to the home. The cost was to me not the customer. Thanks, Sea Breeze
Posted on Aug 05, 2009
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