For Service Technician Use Only
DIAGNOSTICS & TROUBLESHOOTING
2-18
n
Whirlpool
®
Smart Wall Ovens
Code
Description
Explanation and Recommended Procedure
F6E4
User interface/ACU
state status mismatch
NOTE: Before starting any test, cycle power to the oven (power off, wait 10 seconds, and power
on).
PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and
selecting “Error Diagnostics”.
NOTE: If other error codes are stored, troubleshoot those other error codes first.
1.
Unplug the oven or disconnect power
2.
Replace Copernicus ACU.
3.
Reassemble all parts and panels before operating.
4.
Plug in the oven or reconnect power.
5.
Cycle power. If error persists after the Copernicus ACU is replaced, unplug the oven or
disconnect power. Go to Step 7.
6.
If the error is gone, go to Step 10.
7.
Replace UI.
8.
Reassemble parts and panels before operating.
9.
Plug in the oven or reconnect power. Follow the steps in the “General Procedure: Cavity Size
Select” section if the UI was replaced.
10.
Verify operation is normal. Re-enter the Diagnostics mode and remove error code(s).
F6E8
Lost communications
with microwave oven
ACU
NOTE: Before starting any test, cycle power to the microwave oven (power off, wait
10 seconds, and power on).
PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and
selecting “Error Diagnostics”.
1.
Make sure the oven is plugged in. Open microwave door to check if the light comes on.
2.
Check that Sabbath mode for the oven is disabled during this check. Press TOOLS and select
“More Modes”, then press “Sabbath” to turn off. Confirm the display shows “Sabbath mode
off”.
3.
Unplug the oven or disconnect power.
4.
Check the connection between HMI-Central/UI board Control Panel Assembly J1-3 (yellow)
to J1-4 (orange) and Microwave ACU P26-3 (orange) to P26-4 (yellow).
5.
If harness is correct, replace the Microwave ACU.
6.
Reassemble all parts and panels before operating.
7.
Plug in the oven or reconnect power.
8.
If the error appears again, unplug or disconnect power and replace UI.
9.
Reassemble all parts and panels before operating.
10.
Plug in the oven or reconnect power.
11.
Verify operation is normal. Re-enter the Diagnostics mode and remove error code(s).
HMI-Central/
UI Board Control
J1
Wide/Power
YL
OR
OR
YL
P26
Microwave
1
ACU
1
2
2
3
3
4
4 5
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