Jenn-Air JMC2427IM Fiche Technique page 10

FOR SERVICE TECHNICIAN'S USE ONLY
FAILURE ERROR LIKELY FAILURE CONDITION
F1 E5
Microwave Oven Inverter Error
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10
seconds, and then power On). After powering on, be sure that a load, such as
a microwave-safe cup of water, is present in the microwave oven cavity, and
start a microwave cooking function. Wait 1 minute, and then verify that the
failure happens again.
1. Make sure that all interlock switches work properly: when door is open,
microwave light is On; when door is closed, microwave light is Off.
2. Unplug oven or disconnect power.
3. Check the following on the Microwave Appliance Manager:
a. Relay 4903.
b. Connector P8.
P8
To MW
Relay
4903
P355
P354
4. Check the following connections on the Inverter board:
a. CN701.
b. CN702.
c. CN703.
5.
If the door works properly and all connections are okay, replace the
Microwave Inverter Board.
6.
Reassemble all parts and panels before operating.
7. Plug in oven or reconnect power.
CN701
MW Inverter
BU
PWM
CN703
WH
E701
CN702
RD RD
YL/
GN
Magnetron
8. To check if the error code is still present, be sure that a load, such as a
microwave-safe cup of water, is present in the microwave oven cavity,
and start a cooking function in the microwave oven. Wait 1 minute to
check if the error appears. If error remains, then go to Step 9. If not, go to
Step 17.
9. Unplug oven or disconnect power.
10. Replace the Magnetron.
11. Reassemble all parts and panels before operating.
12. Plug in oven or reconnect power.
13. To check if the error code is still present, be sure that a load, such as a
microwave-safe cup of water, is present in the microwave oven cavity,
and start a cooking function in the microwave oven. Wait 1 minute to
check if the error appears. If error remains, then go to Step 14. If not, go
to Step 17.
14. Unplug oven or disconnect power and replace the Microwave ACU.
15. Reassemble all parts and panels before operating.
16. Plug in oven or reconnect power.
17. Verify operation is normal. Enter the Diagnostics Menu, select "Error
Diagnostics," and clear the history.
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