Johnson Controls A421GEF-01C Temperature Control 30067439-890 or the start winding remaining

or the start winding remaining energized too long

This water heater safety switch features a compact footprint for easy integration into the control string

Durable Construction: The 180-degree channel head orientation resists soot buildup and optimizes thermal transfer

this OEM-quality sensor ensures the burner assembly receives accurate feedback to prevent fuel buildup and nuisance shutdowns

often caused by a grounded contactor coil or a pinched thermostat wire

Johnson Controls A421GEF-01C Temperature Control 30067439-890 or the start winding remainingThe Johnson Controls A421GEF 01C is a professional grade electronic temperature control designed for precise thermal management in demanding HVACR environments. Operating on 24 VAC, this unit offers a broad setpoint range of 40 to 212? F, making it suitable for both refrigeration and heating applications. As the direct replacement for A419GEF 1, it features an upgraded front panel LCD for real time monitoring and simplified on off temperature control