Is the pump making noise? Is it drawing current? Does it have a control box or direct wired? If the pump isn't making noise and isn't drawing current. check the impedance on the motor leads.
If you cut the power, does the pressure hold at 17 PSI if no water is drawn from the system? If you lose pressure, there is likely a leak in the line.
Did you dip the well to check water level? Maybe the pump is sucking air and overheating.