KitchenAid Kitchen Aid KICU500X Technical Education page 37

Failure Description
Service Code
Shown on Display
F-36, F37 Temperature sensor is not working
F-40 Power control board failure
F-42 P o w e s r
F-47 Power supply from power control
board to User Interface is missing
or WIDE communication error
between UI and power control
board or an open fuse on the lter
board
Troubleshooting (continued)
Type of Failure
Type 1
Type 1 or Type 2
u p p y l y T
Type 2
Repair Suggestions
1. Disconnect power.
2. Check that the temperature sensor is between 184,000 Ω - 292,000
Ω at room temperature and is rmly plugged in. If the
sensor is not between 184,000 Ω - 292,000 Ω, replace the coil
and go to Step 5. If the sensor is between 184,000 Ω - 292,000 Ω
and the electrical connection is good, go to Step 3.
3. Replace all parts and panels before operating.
4. Reconnect power and check that the coil is working. If it is not
working, disconnect power and replace the non-working coil and
the control board.
5. Replace all parts and panels before operating.
6. Reconnect power.
7. If the control was replaced in Step 4, recon gure the cooktop
following the directions in "Manual Con guration Mode."
1. Disconnect power.
2. Check that the cable between the User Interface and the power
control board is good and properly connected. If the cable needs
repair, x it.
3. Replace all parts and panels before operating.
4. Reconnect power.
5. Verify if error is still present. If yes, disconnect power.
6. Replace the power control board.
7. Replace all parts and panels before operating.
8. Reconnect power.
9. Recon gure the cooktop following the directions in "Manual
Con guration Mode."
p e 2 1. Check for 240 volts AC at the main incoming power supply
connection by completing the following steps.
2. Disconnect power.
3. Connect voltage measurement equipment.
4. Reconnect power and check for 240 volts at J1 L to N, and then
J2 L to N at the EMI lter board, and then J1 L to N at both power
control boards. If voltage is correct, disconnect power, replace
the power control board and go to Step 5. If voltage is not
correct, disconnect power and check for an open fuse on the EMI
lter board. If there is not an open fuse, have a quali ed
electrician check the home power supply.
5. Replace all parts and panels before operating
6. Reconnect power.
7. Recon gure the cooktop following the directions in "Manual
Con guration Mode."
1. Disconnect power.
2. Check that the cables between the User Interface and the power
control board are not damaged and are rmly plugged in.
3. Replace all parts and panels before operating.
4. Reconnect power and check that it is working. If it is not working,
disconnect power and replace the cables between the User
Interface and the power control board.
5. Replace all parts and panels before operating.
6. Reconnect power and check that it is working. If it is not working,
go to Step 7.
7. Disconnect power.
8. Check the continuity between black luge at the terminal block
and both L2 terminals on the EMI board. If there is not continuity
on one or both of these lines, replace the thermofuse harness.
9. Replace all parts and panels before operating.
10. Reconnect power and check that it is working. If it is not working,
go to Step 11.
11. Disconnect power.
12. Check the continuity of the fuses on the EMI board. If either of the
fuses is blown, replace with a new one.
13. Replace all parts and panels before operating.
14. Reconnect power and check that it is working. If it is not working,
go to Step 15.
15. Disconnect power.
16. Change both control boards.
17. Replace all parts and panels before operating.
18. Reconnect power and recon gure the cooktop following the
directions in "Manual Con guration Mode." Check that it is
working. If it is not working, go to Step 19.
19. Disconnect power.
6-5
20. Change the User Interface.
21. Replace all parts and panels before operating.
22. Reconnect power and recon gure the cooktop following the
directions in "Manual Con guration Mode."