The customer reported a loss of heat in the home. She stated that she attempted to reset the boiler once; however, the boiler did not attempt to fire. Upon arrival, I found the burner motor had tripped and failed. The burner motor and nozzle were replaced, and the boiler was restarted. I allowed the boiler to run up to the high limit and observed system pressure rising to approximately 40 PSI. At that time, the pressure relief valve did not discharge. The expansion tank and pressure relief valve were replaced. After restarting the boiler, system pressure stabilized at approximately 20 PSI. During operation, the relay control board was observed chattering. Further inspection revealed a failed automatic zone valve (AutoMag) serving the second-floor heating zone. Power to the automatic zone valve was disconnected, which resolved the control board chattering issue. Due to the age of the system and the overall condition of the boiler and its components, boiler replacement is strongly re
