KitchenAid KGRA806P Technical Education page 75

FAILURE ERROR
(Leftmost (Rightmost
2 Clock 2 Clock
SUGGESTED CORRECTIVE ACTION PROCEDURE
Digits) Digits)
E0 DOOR LATCH MSMATCH or DOOR LATCH MISMATCH
(Door and latch switches do not agree.)
NO OPERATING LATCH or LATCH NOT OPERATING
E1
F5
Inputs
E2 DOOR SWITCH FAULT
E4 LATCH SWITCH FAULT
UNLOCK DOOR ERROR or CAN NOT UNLOCK DOOR
E7
PROCEDURE: Before proceeding, perform steps 1 through 3 above chart on page 6-3
to enter the Diagnostic mode.
TO VERIFY DOOR SWITCH:
A. While in Diagnostics, open the oven door. "1" should appear in the second clock
digit from the left. Close the oven door. The clock digit should toggle to "0".
If the digit did not toggle, go to step B.
If the digit did not toggle after replacing the door switch, go to step D.
If the digit did not toggle after replacing the door switch harness, go to step F.
If the digit did toggle, door switch is operating correctly.
B. Unplug range or disconnect power.
C. Replace door switch. (If door switch is integral to the door latch motor assembly,
replace the entire door latch motor assembly). Go to step H.
D. Unplug range or disconnect power.
E. Check integrity of all harness wires and connections between the power board and
the door switch. Ensure no shorted wires to cabinet.
If the wiring is bad, replace the door switch harness. Go to step H.
If the wiring is good, go to step H.
F. Unplug range or disconnect power.
G. Replace power board. Go to step H.
H. Plug in range or reconnect power.
I. Enter the Diagnostic mode described in steps 1-3 above chart on page 6-3. Repeat
step A.
TO VERIFY DOOR LATCH SWITCH / MOTOR ASSEMBLY:
A. While in Diagnostic mode, press the CLEAN key to cycle the latch motor to the
locked position. 1 should appear in the first clock digit from the left when locked.
Press the CLEAN key to cycle the latch motor to the unlocked position. The clock
digit should toggle to "0".
If the digit did not toggle, go to step B.
If motor runs continuously, wait until motor reaches the unlocked position,
open the door. Press the CANCEL key, go to step B.
If motor did not run, go to step H.
If the digit did not toggle after replacing the door latch motor assembly, go to
step D.
If the digit did not toggle after replacing the door latch switch harness, go to
step F.
If the digit did toggle, door latch switch is operating correctly.
B. Unplug range or disconnect power.
C. Replace door latch motor assembly. Go to step K.
D. Unplug range or disconnect power.
E. Check integrity of all harness wires and connections between the power board and
the door latch switch. Ensure no shorted wires to cabinet.
If the wiring is bad, replace the door latch switch harness. Go to step K.
If the wiring is good, go to step K.
F. Unplug range or disconnect power.
G. Replace power board. Go to step K.
H. Unplug range or disconnect power.
I. Check integrity of latch mechanism from cam / eccentric through actuating rod, to
latch pawl and door slot. Ensure that pawl aligns with the door slot. Correct any
mechanical malfunction.
J. Check continuity of the latch motor and of electrical connections between power
board P4 and motor. If continuity is present, replace power board. Go to step K.
K. Plug in range or reconnect power.
L. Enter the Diagnostic mode described in steps 1-3 above chart on page 6-3. Repeat
step A.
MESSAGE/DESCRIPTION
FAILURE ERROR
(Leftmost (Rightmost
2 Clock 2 Clock
SUGGESTED CORRECTIVE ACTION PROCEDURE
Digits) Digits)
F6 E4 LOST COMMUNICATION
Systems
PROCEDURE: Before proceeding, perform steps 1 through 3 above chart on page 6-3
to enter the Diagnostic mode.
A. Unplug range or disconnect power.
B. Open the back panels and make sure the P2 connector is fully plugged in on the
power board and on the display board.
If it is not, plug it in to the connector and go to step F.
If it is plugged in, go to step C.
C. Visually inspect all the four wires between P2 on the power board and P2 on the
display board. Make sure the wires are not cut or pinched. If the wires appear
to be intact, perform a continuity check between pin 4 of the power board and pin 4
of the display board. Do the same for pins 1, 2, & 5. Both of these checks should
result in a reading of less than 5.
If either of these checks fail, go to step E.
If these checks pass, reconnect P2, then go to step D.
D. Replace the power board. Ensure all connectors are properly seated and then go
to step F.
E. Replace the wiring harness (signal) and go to step F.
F. Ensure all wiring connections are made. Replace the back panels.
G. Plug in range or reconnect power. Observe for longer than 1 minute.
H. If error does not appear, initiate a bake cycle. Let the cycle run at least 1 minute.
If no error occurs, cancel the cycle. The problem has been repaired.
If the error occurs again, restart the troubleshooting procedure at step A (except
in step D replace the display board if power board has already been replaced).
F6 E5 CANCEL KEY ERROR
Systems
PROCEDURE: If step 2 above chart on page 6-3 has not been performed, perform
steps 2 and 3to verify error. If error persists, replace the display board.
6-5
MESSAGE/DESCRIPTION