Whirlpool WOC75EC7H, Service Manual

Page: 33 / 84

For Service Technician Use Only
DIAGNOSTICS & TROUBLESHOOTING
Whirlpool
®
Smart Wall Ovens
n
2-15
Code Description Explanation and Recommended Procedure
F5 Inputs
E1
Latch not operating NOTE: Before starting any test, cycle power to the oven (power off, wait 10 seconds, then power
on).
PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and
selecting “Error Diagnostics”.
1. Enter the Diagnostics Menu and select “Component Activation.” Touch or scroll to “Door
Latch Motor”, then touch “OK”. Touch “Latch Door”. Wait at least 15 seconds, then check
if latch status changes on screen. If status does not change, go to Step 2. If status changes,
unplug the oven or disconnect power, replace Copernicus ACU and go to Step 6.
2.
If latch status on screen is “open”, unplug microwave oven or disconnect power and check
for loose harness connection between motor latch switch and P3-5 and P3-7.
3.
Disconnect connector J8 from Copernicus ACU.
4. Measure the resistance between connectors J8-2 and P5-1. It should be
500 Ω to 3000 Ω at 77°F (25°C).
5. If the resistance check is outside the range, replace the door latch assembly. Verify that the
error is gone. If all checks were correct, replace Copernicus ACU.
6.
Reassemble all parts and panels before operating.
7. Plug in the oven or reconnect power.
8.
Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics”, and clear
the history.
Copernicus
ACU
Motor Latch Switch
P3
Door Switch
BU
TN
BR
OR/BK
5
6
1
2
3
4
9
7
8
10
Copernicus
ACU
P5
J8
YL
WH
WH
N
Motor Door Latch
1
2
5
3
4
6
7
1
2