Servicing The Sump Assembly; Section Four; Troubleshooting Chart - KitchenAid KAD-7 Technical Education

SERVICING THE SUMP ASSEMBLY

Removing the Sump Assembly
The entire sump assembly can be removed from inside the dishwasher tub.
1. Remove the access and toe panels from
underneath the dishwasher door by re-
moving the two (2) screws securing it to
the dishwasher frame. (Fig. 3-16)
2. Disconnect the wiring harness connectors
from the drain pump motor terminals, the
soil sensor and the thermistor.
3. Disconnect the drain tube from the soil sensor
(if present) on the drain pump outlet.
4. Remove the soil sensor, if present.
(See procedure below.)
5. Remove the drain pump motor. (See
procedure below.)
6. Remove the three (3) sump tabs that
secure the sump assembly to the dish-
washer tub. (Fig. 3-17, Inset)
7. From inside the tub, lift the back of the
sump up approximately ½ inch.
Push the assembly back, lift up the front
and then lift it out.
NOTE: When reinstalling the sump assembly,
align the locator key with the corresponding
slot in the tub opening. (Fig. 3-17)
Removing the Soil Sensor
If so equipped, a soil sensing pressure switch is mounted on the drain pump outlet. Disconnect the two
wiring harness connectors from the switch terminals. Disconnect the drain tube. (Fig. 3-18A) Re-
move the Torx T-15 screw securing sensor assembly to the pump base. Lift it from the pump outlet.
(Fig. 3-18B)
Pressure Switch
Fig. 3-18A
Removing the Drain Pump Motor
1. With one hand, press back on the plastic tab that holds
the pump motor from rotating. (Fig. 3-19)
2. With the other hand, rotate the pump motor counterclock-
wise approximately ¼ turn. The pump motor will now be
free of the pump assembly.
Access Panel
Toe Panel
Fig. 3-16
Locator Key
Inset
Sump Tab
Fig. 3-17
Soil Sensor
Fig. 3-18B
Drain Pump
Fig. 3-19
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PROBLEM
Dishwasher does not run
or stops during a cycle
Sump
Dishwasher will not fill
Tab
Sump
Tab
Dishwasher will not drain
Dishwasher will not
dry dishes

SECTION FOUR

TROUBLESHOOTING CHART

POSSIBLE CAUSES CORRECTION/TEST
1. Door is not latching properly. 1. Check to make sure handle
is properly seated in door
latch assembly. Check that
the door switch is opening
and closing properly.
2. Child lock is "ON". 2. Turn child lock "OFF". See Use
and Care Guide.
3. Wash Cycle not set properly. 3. Review setting Wash Cycles
in the Use and Care Guide.
4. Household fuse blown or circuit 4. Have a qualified electrician
breaker tripped. check the circuit breaker or
fuse.
5. Dishwasher is not wired into a 5. Have customer call a qualified
circuit with proper voltage. electrician.
1. Overflow protection float is 1. Check that the overflow pro-
stuck in "up" position. tection float is free to move
"up" and "down" Check that
the overfill switch in opening
and closing properly.
2. Fill valve is inoperable. 2. Check for continuity between
contacts on fill valve.
3. Control board is inoperable. 3. Check for 120VAC between
P8 and P2-3.
1. Air gap (if installed) is clogged. 1. Follow air gap manufacturer's
directions for cleaning.
2. Pump motor is inoperable 2. Disconnect pump motor from
wiring harness and check for
continuity between GY & BU/
BK.
3. Control board is inoperable. 3. Check for 120VAC between
P8 and P3.
1. Heater element is open or shorted. 1. • Check for continuity be-
tween the terminals of the
heater element.
• Check for 120VAC between
P8 and Neutral.
2. Hi-limit thermostat inoperable. 2. Check for continuity between
terminals of the hi-limit
thermostat.
3. Active vent wax motor inoperable. 3. • Check for continuity be-
tween terminals of the
wax motor.
• Check for 120VAC between
P8 and Neutral.
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