Maytag MED5900TW0 Tech Sheet Download Page 8

PAGE 8

TECH SHEET - DO NOT DISCARD

PART NO. W10112987A

FOR SERVICE TECHNICIAN’S USE ONLY

12/06

PROBLEM: Dryer Shuts Off
Before Clothes Are Dry

(Refer to Moisture Sensor Strip Circuit,
page 3; Thermistor Test, page 6;  and
Troubleshooting Guide, page 6.)

1.

Test the moisture sensor by following the
procedure outlined in the Diagnostic
Test, page 1. If the moisture sensor fails
the Diagnostic Test (does not produce a
beep sound):

Unplug dryer or disconnect power.

Check the moisture sensor.

If there is continuity to Ground for
Yellow-Red (Y-R) wire with no load,
look for a short in the Sensor or Y-R
wire. Verify harness connections both
at the sensor and the electronic
control.

If the sensor and Y-R wire are good,
replace the electronic control
assembly.

2.

If Diagnostic Test is passed, verify
thermistor by performing test procedures
outlined in Thermistor Test, page 6.

3.

If problem persists after replacing
moisture sensor and thermistor:

Unplug dryer or disconnect power.

Replace the electronic control
assembly.

PROBLEM: Timer Continuously
Advances

(Refer to Timer Drawing, page 2; Motor
Strip Circuit, page 3; and Troubleshooting
Guide, page 6.)

1.

Unplug dryer or disconnect power.

2.

Verify the Blue wire and the Black L1
wires are in the correct positions. See
timer illustration on page 2.

3.

Test the timer by following the procedure
outlined in the Diagnostic Test, page 1.

4.

If the timer continues to advance past
Off, replace the timer.

MANUFACTURED UNDER ONE OR MORE

OF THE FOLLOWING U.S. PATENTS:

4,669,200
4,700,495
4,754,556
4,840,285
4,865,366
4,899,464
4,908,959

4,989,347
5,066,050
5,560,120
5,809,828
6,020,698
6,047,486
6,199,300

6,446,357
6,597,144
6,604,298
6,685,241
6,732,447
6,784,673
6,819,255

D,314,261
D,314,262
D,457,991
D,457,992
D,495,453

TROUBLESHOOTING (cont.)

IMPORTANT:

Electrostatic (static electricity) discharge may cause damage to

electronic control assemblies. See page 1 for details.

Summary of Contents for MED5900TW0

Page 1: ...en or loose wires Check for wires not pressed into connector far enough to engage metal barbs Resistance checks must be made with dryer unplugged or power disconnected LESS DRY TEST Begin with a fully...

Page 2: ...DRIVE MOTOR 1 3 H P 5M 6M THERMISTOR 10 k BK DL 5400 WATT 2700 WATT EACH LEG ELECTRONIC CONTROL NEUTRAL TERMINAL LINKED TO CABINET CENTRIFUGAL SWITCH THERMAL FUSE 196 F 91 C HIGH LIMIT THERMOSTAT 180...

Page 3: ...BU MOTOR STRIP CIRCUIT 120 VOLTS 240 VOLTS 2M 1M 5M 6M THERMISTOR 10 k ELECTRONIC CONTROL THERMAL CUT OFF TCO 310 F 154 C NEUTRAL TERMINAL LINKED TO CABINET CENTRIFUGAL SWITCH HIGH LIMIT THERMOSTAT 18...

Page 4: ...ntinuity between the L1 terminal of the plug found in step 4 and BK black wire terminal on the timer If there is continuity go to step 7 If there is no continuity check that wires to the terminal bloc...

Page 5: ...2 Remove the wires from the switch to complete this test 3 Reference contact continuity with Pins 1 and 2 to Pin 4 White End of Cycle Signal Switch Table SWITCH POSITION CONTACTS FUNCTION 1 4 2 4 10 o...

Page 6: ...RE CLOTHES ARE DRY Refer to Thermistor Test this page and Moisture Sensor Strip Circuit page 3 HARNESS CONNECTION MOISTURE SENSOR THERMISTOR ELECTRONIC CONTROL MAY NEED TO CHANGE TIMER SETTING TO A MO...

Page 7: ...shooting Guide page 6 1 Perform Temperature Switch Test page 5 2 Unplug dryer or disconnect power 3 Check continuity of heater relay contacts COM to NO should be open If not replace the heater relay 4...

Page 8: ...Test page 6 3 If problem persists after replacing moisture sensor and thermistor Unplug dryer or disconnect power Replace the electronic control assembly PROBLEM Timer Continuously Advances Refer to T...

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