I have the same issue, however, whirlpool and the three recommended service...
Equipment is Whirlpool double oven RBD305PDS14 built-in. After a very stormy summer 2007, I thought a power surge may have zapped the control board. Problem initially presented on display as error & fault "E6 F2"; simply pressing "Timer Off" would usually clear this error & fault code.
However, some months later, the display would often go completely blank followed by the beep sequence "short-long-short-short-short" (Morse code: dit dah dit dit dit). No error & fault code would appear. Pressing any keypad oven control did not work at all in this condition. When power was cycled at the breaker panel, the usual "PF" with clock display did not appear.
[TURN OVEN POWER OFF AT BREAKER!!!]
After following the excellent information on "how to remove the control panel" posted in this forum, I first tested the "control panel thermal fuse" (refer to the tech sheet that should be behind the control panel once it is removed). It showed a closed circuit.
I turned my attention to the "flexible" keypad connector cable (error & fault code "E6 F2" is a keypad or keypad connector problem; again, refer to tech sheet). The control panel has a board mounted female connector with two tabs that may be gently pulled upward to release the flexible cable.
I cleaned the flexible cable contact area (it seats into the board mounted female connector) carefully with a Q tip and some isopropyl alcohol. I reinserted the flexible cable and gently pressed down on the two tabs (noted above) on the board mounted female connector. VERY GENTLY tug on the flexible cable to insure it is gripped by the connector.
After all of this monkey business, I re-mounted the control panel display panel on the oven and restored power. So far, so good. After applying power, the "PF" with clock display always appears. I am able to set the clock and press "Start". Over functions normally. The clock displays as normal and I no longer observe the problem I described above.
BTW, I noted the incoming 240V has transient suppression (no surge protection, however).
on Dec 22, 2010 | Whirlpool RBS245PDS Electric Single Oven