Resideo AT72D1188 Transformer 319852-301 also identified as the RMT24

also identified as the RMT24 Room Thermostat

or your diagnostic board throwing a "pressure switch stuck open" error code

Reduced Arcing: High-performance contacts reduce electrical noise and wear

Common Questions Can this element be used in a 208V system

Can I use a higher amp fuse to prevent nuisance trips

Resideo AT72D1188 Transformer 319852-301 also identified as the RMT24The Resideo AT72D1188 Transformer is a heavy duty, plate mounted solution designed for consistent step down power in 24V control circuits. This 40VA HVAC transformer features a 120V primary input and a 24V secondary output, making it a standard choice for technicians servicing thermostats, gas valves, and relays. Engineered for industrial grade durability, it includes a NEMA Type D rating and a 4"x4" mounting plate designed to secure onto a junction