Whirlpool WOC75EC7H, Service Manual

Page: 43 / 84

For Service Technician Use Only
DIAGNOSTICS & TROUBLESHOOTING
Whirlpool
®
Smart Wall Ovens
n
2-25
Code Description Explanation and Recommended Procedure
F6 E1 Over temperature (main/
upper oven)
NOTE: Before starting any test, cycle power to the oven (power off, wait
10 seconds, and power on).
PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics
mode and selecting “Error Diagnostics”.
1. Unplug the oven or disconnect power.
2.
Check for elements shorted to ground. Check resistance of elements:
a. PX4-2 and PX3-2 to check Broil element (13.2Ω to 14.6Ω)
b. PX1-1 and PX3-2 to check Bake element (19Ω to 21Ω)
c. PX1-3 and PX3-2 to check Convect element (15.2Ω to 17.3Ω)
3.
If there is a short to ground, replace the corresponding element.
4. Check for shorted relays. Disconnect PX1, PX2, and PX4 connectors and check
for shorts between:
a. PX1-1 and PX1-2 (Bake relay)
b. PX1-3 and PX1-4 (Convect relay)
c. PX4-1 and PX4-2 (Broil relay)
5. If there is a shorted relay, replace the Copernicus ACU control.
6.
Go to Step 13.
7. If everything is correct, disconnect connector P3 from the Copernicus ACU and
measure the resistance of the oven sensor. It should be 1000Ω to 1200Ω at
77°F (25°C). Check sensor for short to ground. If checks on sensor are not
correct, replace the sensor and repeat the checks.
8.
Reassemble all parts and panels before operating.
9. Plug in the oven or reconnect power.
10.
Enter the Diagnostics mode and select “Sensors & Switches” to verify that the
corresponding oven temperature displayed is correct (ambient temperature).
NOTE: On the status screen, the unit of measurement is Celsius.
11. If it is not, unplug the oven or disconnect power.
12.
Replace the Copernicus ACU board.
13. Reassemble all parts and panels before operating.
F6 E3 Over temperature (lower
oven)
K11
K2
K10
K3
PX4
PX1
PX3
Upper Copernicus
ACU
BU
RD
YL YL
BU
RD
RD
RD
BK
Broil - 4000W
Bake - 2800W
Upper Convect - 3400W
Temperature Limiter
RD/WH
Open Temp 338€F (170€C)
N L2 L1
1
2
1
2
3
4
BK
1
2
BK
1
1 2 2
K11
K10
K2
K3
PX4
PX1
PX3
Lower Copernicus
ACU
BU
RD
YL YL
BU
RD
RD RD
BK
Broil - 4000W
Bake - 2800W
Upper Convect - 3400W
Temperature Limiter
RD/WH
Open Temp 338€F (170€C)
N L2 L1
1
2
BK
1
2
1
2
3
4
BK
1
2 1
2
Upper Copernicus
ACU
Upper Oven
Temperature
V
Sensor
V
1
2
5
3
4
10
P3
6
7
8
9
Lower Copernicus
ACU
Lower Oven
Temperature
V
Sensor
V
1
2
5
3
4
10
P3
6
7
8
9