Hot tip on this problem from our friends at Maytag:

A poor connection between the wire terminals and the heater relay causes high current draw and damages the terminals on the heater relay on the main control board.

The correction is to replace the main control board as well as both 1/4″ female tin terminals on the wire harness and any damaged wire.

Production changes for units made after Feb. 25, 2005 have corrected this problem.