Either way the error code is a mis-communication error... which means a faulty power board... click on the link below... Here's the tech. data sheet for your model that explains what to do for error code F6 E4:
manuals/Tech_Sheet_9761387.pdfYou would need the rest of the model number to make sure you have the correct board... and here is the Power Board for your model...
F6 Systems E4 LOST COMMUNICATION
PROCEDURE: Before proceeding, perform steps 1 through 3 above chart on page 5 to enter the Diagnostic mode.
A. Unplug range or disconnect power.
B. Open the back panels and make sure the P2 connector is fully plugged in on the power board and on the display board.
- If it is not, plug it in to the connector and go to step F.
- If it is plugged in, go to step C.
C. Visually inspect all the four wires between P2 on the power board and P2 on the display board. Make sure the wires are not cut or pinched. If the wires appear to be intact, perform a continuity check between pin 4 of the power board and pin 4 of the display board. Do the same for pins 1, 2, & 5. Both of these checks should result in a reading of less than 5.
- If either of these checks fail, go to step E.
- If these checks pass, reconnect P2, then go to step D.
D. Replace the power board. Ensure all connectors are properly seated and then go to step F.
E. Replace the wiring harness (signal) and go to step F.
F. Ensure all wiring connections are made. Replace the back panels.
G. Plug in range or reconnect power. Observe for longer than 1 minute.
H. If error does not appear, initiate a bake cycle. Let the cycle run at least 1 minute.
* If no error occurs, cancel the cycle. The problem has been repaired.
* If the error occurs again, restart the troubleshooting procedure at step A (except in step D replace the display board if power board has already been replaced).
Hope helps.