Gas valve with overpressure diagnostics

A combustion appliance comprising:

• a valve assembly for controlling flow of a fuel for combustion by the combustion appliance when the combustion appliance is running, the valve assembly comprising:
• a valve body having an inlet port and an outlet port, with a fluid path extending between the inlet port and the outlet port;
• a valve situated in the fluid path between the inlet port and the outlet port;
• a valve actuator for selectively moving the valve between a closed position, which closes the fluid path between the inlet port and the outlet port, and an open position;
• a pressure sensor in communication with the fluid path upstream of the valve, the pressure sensor sensing a pressure of the fuel in the valve body upstream of the valve;
• a communication link configured to output a signal readable by a remote device;
• a controller physically secured to the valve body and in operative communication with the pressure sensor, the controller including a non-volatile memory for locally storing indications of overpressure events;
• the controller configured to compare a measure related to the sensed pressure of the fuel in the valve body upstream of the valve with an overpressure threshold value, and if the measure surpasses the overpressure threshold value, the controller is configured to:
• provide a predetermined output signal to the communication link for communication to the remote device located remotely from the valve assembly, the predetermined output signal indicating that an overpressure event has occurred;
• and
• store an indication of the overpressure event in the non-volatile memory of the controller for subsequent retrieval, along with an indication of a cumulative number of overpressure events over a lifetime of the valve assembly.