I CHANGED THE JUMPER SETTING TO OFF ON THE FAN & PUMP OVER RIDE , NOW I HAVE A ERROR CODE A03 SHOWING ON THE DISPLAY, CHANGED IT BACK BUT THE A03 ERROR CODE STILL COMES BACK AFTER THE DHW HAS BEEN RUNNING FOR ABOUT 15 MINS & ALSO THE FAN & PUMP WONT STAY ON AFTER THE HOT WATER HAS BEEN TURNED OFF LIKE ITS SUPPOSE TO DO FOR ABOUT 2MINS.

A13FXR, October 2009