If your UC1 board indicates a fan prover fault (Red LED flashing)

or a noticeable hiss indicating manifold pressure loss

Exact OEM Replacement: Fully replaces E12C15440 with identical pin configurations for fast

Once the inducer motor achieves full RPM and creates sufficient vacuum

Streamlined Installation: Direct-fit assembly reduces downtime during critical HVAC repairs

Siemens Building Technology 141-0522 Stat 322056-301 If your UC1 board indicatesThe Siemens Building Technology 141 0522 is a heavy duty electric surface mount thermostat designed for precision temperature control in demanding commercial HVACR applications. This SPDT changeover thermostat is engineered to mount directly onto pipes or flat surfaces, making it an essential component for fan coil changeover control and unit heater low limit or high limit protection. Featuring a 50 150F setpoint range, the 141 0522 utilizes a liquid