Armstrong Fluid Technology 207937-343 Valve 321702-401 Why is my Reznor heater

Why is my Reznor heater flashing 3 blinks with this blower

With a compact plug-in design

This pilot-operated valve is rated for 5-150 PSI and is compatible with air and inert gases

Why is my millivolt system dropping voltage under load

and YCY036 series models

Armstrong Fluid Technology 207937-343 Valve 321702-401 Why is my Reznor heaterThe Armstrong Fluid Technology 207937 343 Valve is a high performance pressure water reducing valve engineered to maintain consistent downstream pressure in complex hydronic heating and plumbing systems. Built with a rugged brass body and featuring a 3 4" Female NPT connection, this Model RD 40 regulator is a critical component for protecting system fixtures from high pressure surges. It arrives with a precise 12 PSI factory setpoint, though it offers