Tech Sheet

FOR SERVICE TECHNICIAN’S USE ONLY

Failure/Error Display Codes

No Display - control is blank

Switch Mode Power Supply (SMPS), User

Interface (UI)

SUGGESTED CORRECTIVE ACTION PROCEDURE

NOTE: Before starting any test, cycle power to the oven(power off, wait 10

seconds, and power on).

1. Unplug oven or disconnect power.

2. Remove plastic cover from U.I. Check the connection from display to U.I.

User Interface not reacting

to touch

Control Panel Assembly

SUGGESTED CORRECTIVE ACTION PROCEDURE

NOTE: Before starting any test, cycle power to the oven(power off, wait 10

seconds, and power on).

1. Unplug the oven or disconnect the power.

2. Check if the touch cables are properly connected.

3. Plug in the oven or reconnect power and verify if oven operation is

normal.

4. If the touch keys don’t work, unplug the oven or disconnect power again.

5. Replace the Control Panel assembly.

6. Reassemble all parts and panels before operating.

7. Plug in the oven or reconnect power.

8. Verify that oven operation is normal.

No Sound Speaker, Control Panel Assembly

SUGGESTED CORRECTIVE ACTION PROCEDURE

Replace Control Panel assembly.

FAILURE ERROR LIKELY FAILURE CONDITION

F1 E3 MWO ACU Internal error

SUGGESTED CORRECTIVE ACTION PROCEDURE

1. Run a U.I. conguration. Check the functionality of each cycle. Available

cycles depend on the model. The possible cycles available are Cavity

Fan, Cooling Fan, Drain Pump, FC Valve and Turntable.

2. Unplug oven or disconnect power and x the connections of the non-

functioning loads. Reassemble all parts and panels and plug in oven or

reconnect power. If the error code does not reappear, follow the “Final

Steps” section.

3. If the error code does reappear, unplug oven or disconnect power. Test

the continuity of the non-functioning loads. If it is an open circuit, replace

the loads. If the error code does not appear, reassemble all parts and

panels, follow the “Final Steps” section.

4. If the error code does appear after replacing the loads, or if it is not an

open circuit, unplug oven or disconnect power and put the replaced load

back and replace the AM control board.

5. Reassemble all parts and panels and follow the “Final Steps” section.