APPARENTLY THIS CAUSED THE DRAIN SOLENOID TO 'BURN OUT'. I REPLACED IT ASSUMING IT HAD BEEN A LEMON, AND THE REPLACEMENT 'BURNED OUT' AFTER A COUPLE OF DAYS. I THINK THIS IS A CASE WHERE THE 'PROBLEM' FOR WHICH THE CHECK VALVE WAS THE 'CURE', WAS LESS OF A PROBLEM THAN THE 'CURE' (THE CHECK VALVE). IN OTHER WORDS, THE CURE IS WORSE THAN THE PROBLEM.
JOHN DICKERSON, December 2005