Service manual

6-4
FAILURE
(Leftmost
2 Clock
Digits)
ERROR
(Rightmost
2 Clock
Digits)
MESSAGE/DESCRIPTION
SUGGESTED CORRECTIVE ACTION PROCEDURE
H. Replace all parts and panels before operating.
I. P lug in oven or reconnect power. Wait 60 seconds.
J
. If error code returns after 60 seconds, proceed to step K.
K
. Unplug oven or disconnect
power.
L. Replace cable connecting user interface and keypad.
M. Replace all parts and panels before operating.
N
. Plug in oven or reconnect power. Wait 60 seconds.
O
. If error code returns after 60 seconds, proceed to step P.
P
. Unplug oven or disconnect
power.
Q. Replace oven user interface.
R
. Replace all parts and panels before operating.
S
. Plug in oven or reconnect power. Wait 60 seconds.
T
. Verify operation is normal. Press OFF, OFF, START
to reenter the Diagnostic
Mode and complete checks.
F3
Sensors
E1
E3
LOWER MAIN OVEN SENSOR SHORTED OR OPEN
MEAT PROBE SHORTED
PROCEDURE: Before proceeding, press OFF, OFF, START to enter the
Diagnostic mode.
A
. Verify cavity temperature on Screen 1.
B
. If dashes appear in main temperature display go to step C.
C
. Unplug oven or disconnect
power.
D. Remove back panels and ensure the indicated
temperature sensor is plugged
in properly and fully inserted. If not, plug in the connector
and proceed to step I.
If sensor is plugged in properly go to step E.
E
. Check connector P2 on the appliance
manager. Ensure P2 connector is
plugged in properly and fully inserted. If connector is inserted properly go to
step I. If not go to step F.
F
. Visually inspect the wires between P2 on the appliance manager and the
indicated temperature sensor. Make sure the wires are not pinched or cut. If
wires appear intact, unplug P2 connector on the appliance manager.
Go to step G.
G
. Measure the indicated sensor resistance value (measure between appropriate
P2 connector pins). For the following sensors, the resistance value should read:
LowerOvenSensor: Between 931 and 2869 Ω (Approx.1080 Ω at room temp.)
Meat Probe Sensor: Between 1,300 and 103,000 Ω (Approx. 59,000 Ω at room temp.)
(Insert meat probe into meat probe jack located
inside the oven cavity prior to reading resistance.)
If indicated temperature sensor does not meet these requirements go to step H.
If indicated temperature sensor does meet these requirements go to step J.
H
. For LOWER sensor:
Replace appropriate temperature sensor. Repeat step G.
If the requirements are not met, replace sensor harness.
Repeat step G.
For MEAT PROBE sensor:
Replace meat probe sensor. Repeat step G.
If the requirements are not met, replace sensor harness.
Repeat step G.
If the requirements are still not met, replace the meat probe jack.
If the meat probe sensor is still not operating correctly go to step I.
I
. Replace the appliance manager. Ensure all connectors are properly placed and
firmly connected.
J
. Replace all parts and panels before operating.
K
. Plug in oven or reconnect power. Wait 60 seconds.
L
. Enter into Diagnostic mode and read sensor for main oven sensor, warm drawer
and meat probe on immediate
display.
F3
Sensors
E2
WARMING DRAWER SENSOR SHORTED OR OPEN
PROCEDURE: Oven is not equipped with this feature. If error occurs press OFF,
OFF, START enter into Diagnostics Mode, then replace user interface with correct
control associated with this product.
F4
Microwave
Sensors
E1
E2
E4
CAVITY TEMPERATURE SENSOR ERROR
INTERNAL TEMPERATURE
SENSOR
HUMIDITY SENSOR
FAILURE
(Leftmost
2 Clock
Digits)
ERROR
(Rightmost
2 Clock
Digits)
MESSAGE/DESCRIPTION
SUGGESTED CORRECTIVE ACTION PROCEDURE
PROCEDURE: There are three sensors for the microwave. They are the Cavity
Sensor, Ambient Sensor (integrated on the MW appliance
manager), and Humidity
Sensor. Before proceeding, press OFF, OFF, START to enter the Diagnostic
mode.
A. Press the number "6" key to transition to the Sensors screen.
B
. Verify in diagnostics
the temperature readings on sensor.
C. The sensors for the combo microwave oven will scroll through the list of sensors.
D
. If a sensor reading on the display shows (-
--) dashes, the sensor is not
connected
or otherwise inoperable. If sensor that shows dashes is the
ambient sensor, proceed to step O.
E
. Unplug oven or disconnect
power.
F. Remove top panel to gain access to the microwave control system.
G
. Ensure the cavity temperature sensor (P6) and the humidity sensor (P4) are
plugged in properly to the appliance manager. If not, plug in the connector
and proceed to step R. If connectors are plugged in proceed to step H.
H
. Visually inspect the wires between P4 and cavity sensor from the appliance
manager to the back of the unit to ensure they are not pinched or cut. If
wires appear to be intact, unplug connector and proceed to step I.
I
. Measure the indicated sensors resistance
value from the P4 connector. For
this sensor, the resistance value should read 231 kΩ at 25°C.
J
. Visually inspect the wires between P6 and humidity sensor from the appliance
manager to the front of the unit to ensure they are not pinched or cut. If wires
appear to be intact, unplug connector and proceed to step K.
K
. Measure the indicated sensors resistance
value from the P6 connector. For this
sensor, the resistance value should read 2.8 kΩ at 25°C (between pins 3 and 1
or between pins 3 and 2).
L
. If indicated temperature sensor does not meet these requirements proceed to step M.
M. Replace cavity sensor. Ensure the cavity sensor
is properly inserted and
plugged into P6. Continue to step P.
N
. Replace humidity sensor. Ensure the humidity sensor is properly inserted and
plugged into P4. Continue to step P.
O
. Replace microwave appliance manager. Ensure all connectors are properly
placed and firmly connected.
P
. Replace all parts and panels before operating.
Q
. Plug in oven or reconnect power. Wait for 60 seconds.
R
. Enter into the Diagnostic Mode and press key "6" to scroll to the sensor display.
Read the sensor reading for the three sensors,
ensuring the cavity, humidity
and internal sensors are reading correctly.
F5
NONE IDENTIFIED FOR MICROWAVE METHOD FOR
DETERMINING
FAILURE
PROCEDURE: Before proceeding, press OFF, OFF, START to enter Diagnostic
Mode. Using the main screen upon entering diagnostics open and close door on
microwave. In the hours field, the second digit should show "0" when door is open
and "1" when door is closed.
If display shows a "0" when door is closed and does not
transition to a
"1", verify position of door switches and replace as necessary.
F5
E0
E1
DOOR AND LATCH SWITCH DO NOT AGREE
DOOR LATCH NOT OPERATING.
PROCEDURE: Before proceeding, press OFF, OFF, START to enter the Diagnostic mode.
TO VERIFY DOOR SWITCH:
A
. While in diagnostics, open the oven door. The second digit on the clock display
should toggle between “1” and “0” as the door opens and closes.
When door is
closed display should show “1”, when the door is open display should show “0”.
If the second digit on the clock display 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.
B
. Unplug oven 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 oven or disconnect
power.
E . C heck the integrity of the harness wires and connections between the
appliance manager and the door/latch assembly.
Ensure there are no shorted
or pinched wires.
If the wiring harness is pinched or damaged, replace the door switch harness.
Go to step H.
If wiring harness is good, go to step H.
F
. Unplug oven or disconnect
power.
G. Replace appliance manager. Go to step H.
H
. Replace all parts and panels before operating.
I
. P lug in oven or reconnect power.
J
. Press OFF, OFF, START to reenter Diagnostic
mode. Repeat step A.