00017 is a Liquid Propane smart gas valve by Honeywell used on Mr Heater, Enerco, and Heatstar units.
The 00017 Honeywell model SV9510 is a direct spark ignition gas valve that features a ON-OFF lighting sequence and uses 1/2" pipe thread for gas inlet and outlet. 00017 Honeywell smart valve has a built-in diagnostic program, which will assist in troubleshooting in the event of a valve-related problem.
The LED is located on the top of the valve as shown in the pictures above.
This 00017 Liquid Propane valve is the gas valve on the following Liquid Propane Heat Star ERXL units: