Whirlpool WED9500TU1 Troubleshooting Guide download pdf (Page 5)

TECH SHEET - DO NOT DISCARD PAGE 5

FOR SERVICE TECHNICIAN’S USE ONLY PART NO. W10177456A

➔

If there is no continuity, disconnect the white

wire of the harness from the power cord at

the location illustrated in figure 5, page 4.

Test the continuity of the power cord neutral

wire as illustrated in figure 6. If an open

circuit is found, replace the power cord.

Otherwise, go to step 6.

6. In a similar way, check the continuity between

the L1 terminal of the plug and P9-2 (black

wire) on the control board.

➔

If there is continuity, go to step 8.

➔

If there is no continuity, check the continuity

of the power cord in a similar way to that

illustrated in figure 6, but for power cord’s

L1 wire.

➔

If an open circuit is found, replace the power

cord. Otherwise, replace the main harness.

7. Visually check that the P5 connector is

inserted all the way into the machine control

electronics.

8. Visually check that the console electronics and

housing assembly is properly inserted into the

front console.

9. If both visual checks pass, replace the console

electronics and housing assembly.

10. Plug in dryer or reconnect power.

11. Perform steps under DIAGNOSTIC: Console

Buttons and Indicators, page 1, to verify repair.

12. If indicators still do not light, perform

TEST #2.

TEST #2 Machine Control Power

Check

This test is used to determine if power is present

at the machine control electronics. This test

assumes that TEST #1 has been completed.

NOTE: The drum light is controlled by the machine

control on all models.

1. Plug in dryer or reconnect power.

2. Open the door.

➔

If the drum light illuminates, then power is

present at the machine control. Go to

step 3.

➔

If the drum light fails to illuminate, the

problem may be as simple as a bad bulb.

Replace bulb with a working bulb. If drum

light still fails to illuminate, continue with

step 3.

3. Unplug dryer or disconnect power.

4. Replace the machine control electronics.

5. Plug in dryer or reconnect power.

6. Perform steps under DIAGNOSTIC: Console

Buttons and Indicators, page 1, to verify repair.

TEST #3 Motor Circuit

This test will check the wiring to the motor and the

motor itself. The following items are part of this

motor system:

Part of Motor System

Electric

Dryer

Gas

Dryer

Harness/connection

✔✔

Thermal fuse

✔ no

Belt/belt switch

✔✔

Drive Motor

✔✔

Centrifugal switch

✔✔

Door switch

✔✔

Machine control electronics. See

ESD information, page 1.

✔✔

1. Unplug dryer or disconnect power.

2. Access the machine control electronics and

measure the resistance across P8-4 and P9-1.

See Accessing & Removing the Electronic

Assemblies, page 9.

➔

If resistance across P8-4 and P9-1 is in the

range of 1 to 6 Ω, replace the machine

control electronics.

➔

Otherwise, go to step 3.

3. Check the wiring and components in the path

between these measurement points by

referring to the appropriate wiring diagram (gas

or electric) on page 12.

ELECTRIC DRYER ONLY:

Check the thermal

fuse. See TEST #4b, page 7.

ALL DRYERS

: Continue with step 4 below to

test the remaining components in the motor

circuit.

4. Check the belt switch and drive motor. Access

the belt switch and drive motor by removing

the back panel. See Removing the Back Panel,

page 11. Slowly remove the drum belt from the

spring-loaded belt switch pulley, gently letting

the belt switch pulley down. See figure 7.

5. Remove the white connector from the drive

motor switch. See figure 8.

6. Remove the bare copper wire terminal from

pin 5 of black drive motor switch. See figure 9.

7. Using figure 9, check for the resistance values

of the motor’s Main and Start winding coils as

shown in the following table.

NOTE: Main and Start winding coils must be

checked at the motor.

Winding

Resistance

Contact Points

of Measurement

MAIN

3.3–3.6

Lt. blue wire in back at

pin 4 and bare copper wire

terminal removed from pin 5

of black drive motor switch

START

2.7–3.0

Lt. blue wire in back at

pin 4 and bare copper wire

terminal on pin 3 of black

drive motor switch

➔

If the resistance at the motor is correct,

there is an open circuit between the motor

and machine control electronics. Check for

failed belt switch.

➔

If the Start winding resistance is much

greater than 3 Ω, replace the motor.

8. Check the belt switch by measuring resistance

between the two light blue wires, as shown in

figure 10, page 6, while pushing up the belt

switch pulley.

Main Winding:

Lt.

and Bare Copper Wire

Blue Wire in Back

Start

Winding:

Lt.

and

Bare Copper

Wire

Blue Wire

in Back

Figure 9. Main and start winding measure

points.

COM

Power Cord

Plug

Figure 6. Power cord terminals, gas dryer.

Drum

Belt

Belt Switch Pulley

Figure 7. Slowly remove drum belt.

White

Connector

Drive Motor

Switch

Figure 8. Remove white connector.

1 2 3 4 5 6 7 8 9 10 11 12

Comments to this Manuals

No comments

Whirlpool WED9500TU1 Troubleshooting Guide Page 5

Comments to this Manuals

Related products and manuals for Electric laundry dryers Whirlpool WED9500TU1