"pressure switch open" error codes

Smith 100109680 Pilot Assembly is a critical OEM replacement part engineered for precise ignition control in high-efficiency residential and commercial gas water heaters and boilers

Using a non-OEM board can cause "communication error" codes and potentially damage the compressor or DC fan motor

This OEM water heater part features a standard 3/4-inch NPT inlet and outlet configuration with an integrated high-limit thermistor connection

Its 6" x 6" x 6" enclosure compatibility and native 120-volt input make it the standard choice for professional contractors replacing aged or pitted contacts

France Transformer 28219 Transformer R-134A "pressure switch open" error codesThe France Transformer 28219 is a heavy duty oil burner ignition transformer engineered for high performance combustion systems. This 5LAY 15 model features a robust 120V primary and 10000V secondary output, providing the high intensity spark required for reliable ignition in Carlin 99, 100, and 101 burner series. Designed as a direct service replacement for Webster 313 28AB85, this transformer utilizes a specialized spring clip contact HV terminal