SRD FAQ #2b

After powering up, the controller displays "CPU Fail 3". This message indicates a recipe checksum error has occurred.

The following procedure Erases all Recipes.
(This procedure can be performed with the controller connected or disconected to the SRD).

• This procedure can be performed with the controller connected to the SRD or on a bench.
• Remove controller lid.
  
• Turn on controller power switch.
  
• Depress both Memory Clear Buttons.
  (SW8 and SW9 buttons located on the main logic board, see photo below).
• Release SW8 first (SW8 switch located on right), then release SW9 (located on the left).
  
• If the error does not clear, contact
  Rhetech Customer Service