{"product_id":"icp-thermostat-for-ryb017gaa-24v-heat-pump-control-ships-today","title":"ICP Thermostat for RYB017GAA – 24V Heat Pump Control | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM thermostat (part number 1526859, factory reference TSTAT 3AAT82B35A2 ARCO X) is the 24V low-voltage temperature control engineered for the ICP RYB017GAA heat pump system. The thermostat reads indoor air temperature and signals the equipment to call for heating, cooling, or fan operation, switching the 24V control circuit that drives the contactor, reversing valve, and blower. A failing thermostat is one of the most common causes of \"no heat\" or \"no cool\" complaints even when the equipment itself is healthy. Typical failure symptoms include a blank or frozen display, temperature readings that drift from actual room conditions, short-cycling, or the system failing to respond to setpoint changes. Installing the correct OEM-matched control restores accurate switching and protects the rest of the 24V circuit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1526859\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFactory Reference\u003c\/td\u003e\n\u003ctd\u003e3AAT82B35A2 ARCO X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHeat Pump Thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP\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\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eHeat Pump System Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis thermostat is the OEM-specified control for the ICP RYB017GAA heat pump and the equivalent Tempstar, Heil, and Comfortmaker units built on the same platform. Always confirm your existing wiring and equipment model against the OEM part number before installing.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e – Disconnect power at the breaker and verify zero voltage at the air handler with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e – Remove the existing thermostat from its wall plate and the service panel at the air handler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e – Photograph every wire and its terminal label before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e – Label and disconnect the low-voltage conductors, then remove the old thermostat and sub-base.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e – Mount the new thermostat, reconnect each conductor to the matching terminal per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e – Restore power and verify heating, cooling, reversing-valve, and fan calls all respond correctly.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBlank, frozen, or erratic display\u003c\/li\u003e\n\u003cli\u003eSystem does not respond to setpoint changes\u003c\/li\u003e\n\u003cli\u003eTemperature reading drifts from actual room temperature\u003c\/li\u003e\n\u003cli\u003eShort-cycling or stuck heating\/cooling calls\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\u003cp\u003eShips same day on orders placed before 3 PM CST. 30-day returns on unused parts. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63021835649395,"sku":"1526859","price":76.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047721812339,"sku":"1526859-GEN","price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-thermostat-nonprogrammable-1526859.jpg?v=1782895975","url":"https:\/\/nationalhvacparts.com\/products\/icp-thermostat-for-ryb017gaa-24v-heat-pump-control-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}