Specifications

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Troubleshooting the Wash Pump Motor

The wash pump motor does not start immediately

when the dishwasher cycle has started. The tub

will begin ﬁ lling with water and the motor will start

approximately 40 seconds into the ﬁ ll cycle. If the

motor hums, but will not start, make certain the

pump impeller is free from obstructions and the

motor shaft can turn freely. If the capacitor is open

or shorted, the motor will hum and will not start.

Check for 120 VAC (±10%) at the wash pump motor

terminals. Take the voltage measurement while

"under load" (as the motor is trying to start). This will

eliminate the possibility of a poor wiring connection.

If the 120 VAC (±10%) is present and the motor will

not start, the motor will have to be replaced.

Wash Pump Motor Strip Circuit

Controller

Wash Pump

Pin 5 on CN1

Pin 9 on CN2

WBU