Description
Description
Restore proper temperature regulation in your freezer or fridge with the universal cold control part TJ90SM673 from Supco. This thermostat is designed to replace failing or unreliable controls that cause inconsistent cooling or frost build-up. Because temperature controls vary widely by model year, brand and system design, please check with your maintenance technician to confirm TJ90SM673 is correct for your full appliance model number and that the thermostat is indeed the failed component before ordering.
Features & Benefits
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Universal design: Covers many older-style refrigerator/freezer units where original thermostat controls have failed or were discontinued.
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Wide temperature range: Suitable across typical freezer/freezer-compartment settings (refer to manufacturer specs).
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Multiple mounting options: Often supplied with suction cup, Velcro or screw mounting choices for flexible installation.
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Cost-effective solution: Replacing the thermostat is far less expensive than replacing the compressor, sealed system or entire appliance.
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Reliable repair: Engineered for durability and repeated use in refrigerated environments.
Common Symptoms That Indicate Replacement
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Freezer or refrigerator fails to maintain correct temperature—too warm or too cold—despite compressor and fans operating normally.
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Frost or ice build-up in freezer compartment where defrost or cooling cycles seem incorrect.
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Temperature fluctuations or inconsistent cooling, despite correct settings and filter/ventilation being clear.
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The old thermostat shows visible damage, or part number matches a discontinued control.
If any of these symptoms occur, have your technician verify that TJ90SM673 is the right control and that no other major component (compressor, evaporator fan, defrost heater) is at fault.
Compatibility / Partial Model Info
Because this is a universal replacement control, compatibility covers various older refrigerators and freezers—but you must confirm your full appliance model number with the technician before ordering. Examples:
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Freezer-only units, older refrigerator models where the original thermostat is labelled TJ90SM673 or similar.
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Units where the temperature control has failed and the original part number is obsolete or unavailable.
Note: We do not have a published full model list for TJ90SM673—verify based on your appliance’s service tag.
Cross Reference & Alternate Numbers
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Supco SC1002 is a known universal cold control that replaces numbers like TJ90SC1002, AP4503077, etc. appliancepartspros.com+2supplyhouse.com+2
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If your unit shows number “TJ90SM673” it may be in the same family of universal controls—check mounting, wiring and temperature range before substitute.
Compatibility Notes
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Matching the entire model number of your appliance (including letters/suffix) is critical—even if the old thermostat looks identical.
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Replacing the control addresses the thermostat only—if the root issue lies in the compressor, defrost system, wiring or evaporator the symptom may persist. Technician diagnosis is recommended.
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Installation typically: disconnect power, remove old control, observe wiring and dial/knob orientation, mount the new control (suction/Velcro/screw), reconnect wiring, restore power, adjust temp setting, and monitor for correct cycling.
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After installation, monitor for at least one full freeze cycle to ensure correct performance.