{"product_id":"tempstar-ptac-low-temp-thermostat-for-teb12r50dca-ships-today","title":"Tempstar PTAC Low-Temp Thermostat for TEB12R50DCA — Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM thermostat assembly is the complete temperature-control package for the Tempstar TEB12R50DCA PTAC unit. It combines the control knob (OEM 1058437), the PTAC thermostat body (OEM 1058517), and a low-temperature cutout thermostat (OEM 1059022). The low-temp thermostat protects the unit in cold conditions — it locks out the compressor when ambient or coil temperature drops too low, preventing icing and compressor damage in heat-pump operation. Together these controls manage setpoint, cycling, and cold-weather protection. Symptoms of failure include erratic cycling, no compressor operation in cold weather, or a control that ignores the knob entirely.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Numbers\u003c\/td\u003e\n\u003ctd\u003e1058437 (Knob), 1058517 (Thermostat), 1059022 (Low-Temp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePTAC Thermostat with Low-Temp Cutout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eKnob + Thermostat + Low-Temp Thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect OEM replacement for the Tempstar TEB12R50DCA PTAC unit and related ICP \/ Tempstar \/ Heil TEB-series terminal units that use a low-temperature lockout. Match your existing part numbers (1058437 \/ 1058517 \/ 1059022) to the unit's service label before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the unit disconnect and verify zero voltage with a multimeter before servicing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the PTAC front cover and thermostat trim panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the thermostat wiring, low-temp sensor placement, and knob orientation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the knob, disconnect thermostat and low-temp leads, and unclip both controls from their brackets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new thermostat and low-temp cutout, reconnect leads per your photo, and press on the new knob.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run through heat and cool, and confirm the low-temp cutout allows normal operation at room temperature.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor won't run in cold weather even on a valid call.\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or runs continuously regardless of setpoint.\u003c\/li\u003e\n\u003cli\u003eKnob has no detents or spins freely.\u003c\/li\u003e\n\u003cli\u003eCracked, melted, or discolored thermostat housing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021643301235,"sku":"1058437-GEN","price":59.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048470462835,"sku":"1058437","price":77.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-thermostat-nonprogrammable-1058437_6b31ecf4-0e28-4c4d-a568-fcfbc4cd0750.jpg?v=1782960725","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-ptac-low-temp-thermostat-for-teb12r50dca-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}