Service Guide

For Service Technician Use Only

DIAGNOSTICS & TROUBLESHOOTING

Whirlpool

Smart Wall Ovens

2-15

Code Description Explanation and Recommended Procedure

F5 Inputs

Latch not operang NOTE: Before starng any test, cycle power to the oven (power o, wait 10 seconds, then power

on).

PROCEDURE: Before proceeding, verify the error code by entering the Diagnoscs Menu and

selecng “Error Diagnoscs”.

1. Enter the Diagnoscs Menu and select “Component Acvaon.” 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 connecon 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 operang.

7. Plug in the oven or reconnect power.

8. Verify operaon is normal. Enter the Diagnoscs Menu, select “Error Diagnoscs”, and clear

the history.

Copernicus

ACU

Motor Latch Switch

Door Switch

OR/BK

Copernicus

ACU

Motor Door Latch