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the Maxitrol TD121B must be matched with a sensor that shares the same 120-170°F color code/range
Whether you are troubleshooting a 3-flash diagnostic code on a Goodman gas furnace or performing seasonal maintenance on an Amana air handler
reducing the overall electrical load on the control circuit
Simplified Wiring: Color-coded leads or standard terminal configurations facilitate rapid field replacement
OEM Compatibility: Exact dimensional match for Trane 13 3/8 x 12 5/8 wheels
Trane TCONT103AN21HA Thermostat L99H008 the Maxitrol TD121B must beThe Trane TCONT103AN21HA is a professional grade, non programmable digital thermostat engineered for precise 2 stage heating and 1 stage cooling applications. As a veteran HVAC technician, I recommend this unit for its reliability in systems utilizing heat pump technology, gas, oil, or electric furnaces. This model is the direct OEM replacement for legacy controls including the TCONT401AN21MA, TCONT401AN21MAA, XR401, and ACONT401AN21MA. It features a