This kit restores valve performance to original factory specifications without the labor-intensive process of replacing the entire valve body

including D-series

or intermittent "limit switch open" or "pressure switch" error codes caused by backed-up drainage

or the blower failing to start at the proper time

Johnson Controls A19AAA-40 Temperature Control 30067439-890 This kit restores valve performanceThe Johnson Controls A19AAA 40 is a heavy duty, single stage remote bulb thermostat designed for precision temperature regulation in demanding HVACR environments. Engineered with a liquid filled sensing element, this control provides consistent "repeat" accuracy that remains unaffected by barometric pressure or cross ambient temperature fluctuations. This specific model features a temperature range of 20? F to 80? F (? 5? C to 28? C), making it an