Whirlpool CATALYST Specifications download pdf (Page 33)

Test #4. Motor Control System Test

This test checks that the appropriate relays are delivering voltage to the motor and

that the wiring connections from the control board to the motor are good.

1. See the Pressure Transducer / Agitate Test in the Service Diagnostic Tests table.

As test progresses, 110 - 125 VAC should be measured across the following test points for

each agitation speed.

High Speed Across P9-2 and P7-2

Medium Speed Across P9-2 and P9-1

Low Speed Across P9-2 and P7-4

2. If 110 - 125 VAC is not measured across any of the points, replace the control board.

3. If 110 - 125 VAC is measured across these points but the motor does not run, go to the motor

test. This test will check the wiring to the motor and the motor.

Alternate Motor Test

1. Unplug the washer. Check resistance of Low, Med, and High speed motor windings as shown

in the chart. Note: The start winding coil must be checked at the motor.

2. If the measurement shows infinite ohms, there is either an open circuit in the motor winding or

in the connection between the control board and the motor. To locate the open circuit, mea-

sure the resistance at the motor instead of across P7 and P9.

3. If the resistance is still infinite, replace the motor.

4. If the resistance at the motor test OK, there is an open circuit in the wiring between the

motor and control board. Repair or replace the wiring harness.

WINDING

Low

Medium

High

Start

RESISTANCE

2.6Ω

1.5Ω

2.3Ω

5.1Ω

P7 - 4

WH/OR

P7 - 1

P7 - 2

WH/VT

MEASURE BETWEEN

P9 - 2

WH/BK

P9 - 2

WH/BK

P9 - 2

WH/BK

Measured at the motor across

the RD and YL colored wires.

2. If the resistance is outside of range, replace the valve assembly.

Test #3 - Off-Balance Solenoid Switch Test

1. Unplug the washer and disconnect connectors P5 and P6 from the control board before check-

ing the resistance. Make the checks at contacts shown. NOTE: Off balance arm must be

depressed to read solenoid resistance. Move basket to rear of unit to actuate arm.

SOLENOID

Off Balance

Coil

RESISTANCE

1200Ω Lid Sw Harness

GY/WH

MEASURE BETWEEN

P5 contact 3

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 43 44

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Whirlpool CATALYST Specifications Page 33

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