Field Serviceable: The Alco 200RB series design allows for easy maintenance of internal components without removing the valve body from the piping

this 2-wire non-communicating sensor features a warmer/cooler adjustment lever for localized setpoint shifts

this normally closed actuator features a robust spring return mechanism

check the resistance across the lead wires

Carrier HN61KJ310 Power Relay 30067439-890 Field Serviceable: The Alco 200RBThe Carrier HN61KJ310 Power Relay is a specialized 18 amp component designed for high performance switching in residential and commercial HVAC units. This heavy duty OEM Carrier replacement relay ensures structural integrity and precise electrical timing, maintaining the factory specifications required for furnace control circuits and blower motor operations. Built to handle 18 amp inductive loads, it functions as a critical interface in the systems