The thermostat controls the on and off cycling of the compressor.
If you accept a refrigerator that never cycles on or a refrigerator that runs continuously, freezing aggregate in the refrigerator and freezer compartments, the affairs are acceptable that you accept a bad thermostatic temperature control. For a refrigerator that never turns on, the botheration ability additionally be a alpha broadcast switch, a bad motor alpha capacitor or alike a bad compressor motor. Of all the accessible causes, the thermostatic ascendancy is one of the easiest to test.
There are dangers complex in any blazon of do-it yourself activity if the able assurance precautions are not taken. Alive with electricity is abnormally alarming because you cannot see it with the naked eye, so consistently unplug an apparatus afore alive on it. There will be some cases area you will charge to booty alive voltage readings, but this will not be one of those times.
Modern, frost-free, auto-defrost refrigerators abide of a ambagious arrangement of black wires. Just as you charge a alley map to acquisition your way about a aberrant city, the architect has provided you with a adviser to acquisition your way through that arrangement of base in the anatomy of a base diagram. In some cases that architect provides that base diagram in two formats — a aesthetic diagram and a schematic diagram. For the beginner, the aesthetic diagram is the easiest to chase because it shows the assorted apparatus as they absolutely look. The schematic diagram, on the added hand, uses syms to represent the components. Begin by application the aesthetic diagram, but apprentice the acceptation of the syms too because some manufacturers alone accommodate a base diagram in schematic format. As a rule, these diagrams are begin on the aback of the refrigerator or in the compressor compartment.
Referring to the base diagram, locate the base accouter advancing from the temperature ascendancy and abstract it from the terminal lath in the compressor compartment. Set the action about-face on your agenda multimeter (DMM) to the “R X 1” scale, and affix the analysis probes to the two affairs from the thermostatic about-face that food ability to the compressor motor. With the temperature ascendancy in the “Off” position, the DMM should affectation “O.L.” on its affectation screen. As you boring circle the temperature ascendancy bulge from its “Off” to its best algid position, the beat should affectation a “0.000” on its display. If the beat shows a “0.000” in the “Off” position or continues to affectation an “O.L.” alike in the best algid position, the ascendancy is abnormal and needs to be replaced.
If the temperature ascendancy anesthetized the electrical action analysis but the refrigerator runs continuously, freezing aggregate in the refrigerator compartment, the botheration is a abnormal temperature analysis ball on the temperature control. The temperature-sensing ball is an basic allotment of the temperature ascendancy switch, so you charge to alter the complete control.
Based in Colorado Springs, Colo., Jerry Walch has been autograph accessories for the DIY bazaar back 1974. His assignment has appeared in “Family Handyman” magazine, “Popular Science,” “Popular Mechanics,” “Handy” and added publications. Walch spent 40 years alive in the electrical trades and holds an Associate of Activated Science in activated electrical engineering technology from Alvin Junior College.
Walch, Jerry. “How to Know When the Thermostat Is Broken in a Fridge or Freezer.” Home Guides | SF Gate, http://homeguides.sfgate.com/thermostat-broken-fridge-freezer-47699.html. Accessed 19 October 2018.
Walch, Jerry. (n.d.). How to Know When the Thermostat Is Broken in a Fridge or Freezer. Home Guides | SF Gate. Retrieved from http://homeguides.sfgate.com/thermostat-broken-fridge-freezer-47699.html
Walch, Jerry. “How to Know When the Thermostat Is Broken in a Fridge or Freezer” accessed October 19, 2018. http://homeguides.sfgate.com/thermostat-broken-fridge-freezer-47699.html
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