Jenn-Air JMW2427IL Mode D'emploi page 10

FOR SERVICE TECHNICIAN'S USE ONLY
FAILURE ERROR LIKELY FAILURE CONDITION
F1 E4 Microwave oven relay 4903 error
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power off, wait 10
seconds, and 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. Wire connections to Relay 4903
Line Fuse
20A
1
BR
L1
Primary
Interlock
Switch
b. Check if Relay 4903 is shorted. If so then go to Step 7.
4. Reassemble all parts and panels before operating.
5. Plug in oven or reconnect power.
6. 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, go to Step 7. If not, go to Step
10.
7. Unplug oven or disconnect power and replace the Microwave Appliance
Manager.
8. Reassemble all parts and panels before operating.
9.
Plug in oven or reconnect power.
10. Verify operation is normal. Enter the Diagnostics menu, select "Error
Diagnostics," and clear the history.
Microwave Relay
Inverter
4903
BU
CN702
4
FAILURE ERROR
F1 E5
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power off, wait 10
seconds, and 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
To MW
Relay
4903
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.
10
LIKELY FAILURE CONDITION
Microwave oven inverter error
P8
CN701
MW Inverter
BU
PWM
CN703
WH
P355
E701
CN702
RD RD
P354
YL/
GN
Magnetron