Product review (5 stars): GREAT REPLACEMENT PART..WHY TROUBLESHOOT REPLACE THE WHOLE THING
DIRECT REPLACEMENT...YOU DO NEED TO RE-USE THE ARM AND COVER BUT WORKS PERFECT AND APPEARS TO BE GENUINE OEM.  AT THIS PRICE AND EASE OF INSTALL ITS JUST NOT WORTH TROUBLESHOOTING OR TRYING TO FIX THE CONTROL BOARD OR THERMOSTAT--JUST REPLACE THE ENTIRE UNIT AND BE DONE.. 3 SCREWS AND ONE WIRE CONNECTOR AND YOUR DONE.