Whirlpool Dryer Fault Codes

 

 

Failure
Code
Condition
Check/Repair
PF
Power Failure
If the household power goes off and the control board was in RUN mode or PAUSE mode, the electronic control board will display a power failure error code.
E1 or E2
Thermistor Failure
The dryer will not operate if the exhaust temperature drops below 18° F. or exceeds 250° F.

When the thermistor circuit is open (>50K ohms), the error code E1 flashes in the display.

When the thermistor circuit is shorted (<500 ohms), the error code E2 flashes in the display.

Normal thermistor resistance values:
60° F. - 15.3K ohms.
70° F. - 11.9K ohms.
80° F. - 9.2K ohms.
E3
Touchpad or Software mismatch
Flashes when there is a touchpad or software mismatch. NOTE: This error code is displayed only in diagnostics mode.

Cabrio Dryer

Failure
Code
Condition
Check/Repair
PF
Power Failure
PF flashes to indicate that a power failure
occurred while the dryer was running. Press
START to continue the cycle, or press
PAUSE/CANCEL to clear the display.
F-01
Primary Control Failure
F-01 flashes when there is a primary control
failure. Replace the machine control electronics.
See Accessing & Removing the Electronic
Assemblies.
F-02
Keypad/ User Interface Failure
F-02 flashes when there is a stuck button or user
interface mismatch. This fault code will ONLY
appear when in the diagnostic test mode. See
TEST #6.
F-22 Exhaust Thermistor Open F-22 flashes if the exhaust thermistor is open.
See TEST #4a.
F-23 Exhaust Thermistor Shorted F-23 flashes if the exhaust thermistor has
shorted. See TEST #4a.
F-26 Motor Drive System Failure F-26 flashes if there is a motor drive system
failure. See TEST #3.
F-28 Moisture Sensor Open F-28 flashes if the moisture sensor strip is open.
This fault code will ONLY appear when in the
diagnostic test mode. See TEST #5.
F-29 Moisture Sensor Shorted F-29 flashes if the moisture sensor strip has
shorted. This fault code will ONLY appear when in
the diagnostic test mode. See TEST #5.

TEST #1 Supply Connections
This test should only be done after confirming proper voltage at the outlet.
1. Unplug dryer or disconnect power.
2. Remove the cover plate from the back of the dryer.
3. Check that the power cord is firmly connected to the dryer’s wire harness.
4. Access the machine control electronics without disconnecting any wiring to the control board.
5. With an ohmmeter, check for continuity between the neutral (N) terminal of the plug and P8-3 (white wire) on the machine control board. If there is continuity, go to step 6. If there is no continuity, disconnect the white wire of the harness from the power cord. Test the continuity of the power cord neutral wire . 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 for power cord’s L1 wire. If an open circuit is found, replace the power cord. Otherwise, go to step 7.
7. Replace the main harness.
8. Visually check that the P5 connector is inserted all the way into the machine control electronics.
9. Visually check that the user interface assembly is properly inserted into the front console.
10. If both visual checks pass, replace the user interface assembly.
11. Plug in dryer or reconnect power.
12. Perform the Console Buttons and Indicators Diagnostic test to verify repair.
13. If indicators still do not light, the machine control electronics has failed: Unplug dryer or disconnect power.
Replace the machine control electronics. Plug in dryer or reconnect power. Perform the Console Buttons and Indicators Diagnostic test to verify repair.


TEST #2 Machine Control Power Check
This test is used to determine if power is present at the machine control electronics.
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, and it is functional. Go to TEST #6. If the drum light fails to illuminate, do not assume the machine control electronics needs replacement. Several conditions may cause the drum light not to illuminate, including a bad bulb. If the drum light does not illuminate, go to TEST #1.


TEST #3 Drive Motor Circuit
This test will check the wiring to the motor and the motor itself. The following items are part of this motor system:
Harness/connection Belt/belt switch Drive motor Centrifugal switch Door switch Machine control electronics
1. Unplug dryer or disconnect power.
2. Access the machine control electronics and measure the resistance across P8-4 and P9-1.
If resistance across P8-4 and P9-1 is in the range of 1 to 6 ohms, 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 and strip circuit in Section 7.
4. Check the belt switch and drive motor. Access the belt switch and drive motor by removing the front panel/drum assembly. Slowly remove the drum belt from the spring-loaded belt switch tension pulley, gently letting the belt pulley down.
5. Remove the white connector from the drive motor switch.
6. Check for the resistance values of the motor’s Main and Start winding coils. NOTE: Main and Start winding coils must be checked at the motor.WINDING RESISTANCE Ω CONTACT POINTS OF MEASUREMENT
MAIN 1.4–2.6 Blue wire in back at pin 4 and bare copper wire on pin 5 of black drive motor switch
START 1.4–2.8 Blue wire in back at pin 4 and bare copper wire 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 4 ohms, replace the motor.
7. Check the belt switch by measuring resistance between the two blue wires while pushing up the belt switch tension pulley.If the resistance reading goes from infinity to a few ohms as pulley arm closes the switch, belt switch is OK. If not, replace the belt switch. If belt switch is OK and there is still an open circuit, check and repair the wiring harness.
8. Door switch problems can be uncovered in the Door Switch Diagnostic Test; however, if this was not done, the following can be done without applying power to the dryer. Connect an ohmmeter across P8-3 (neutral, white wire) and P8-4 (door, tan wire).With the door properly closed, the ohmmeter should indicate a closed circuit
(0–2 ohms). If not, replace the door switch assembly.


TEST #4 Heater
This test is performed when either of the following situations occur: Dryer does not heat Heat will not shut off
This test checks the components making up the heating circuit. The following items are part of this system:
Harness/connection, Heater relay, Thermal cut-off, Thermal fuse, High limit thermostat, Gas burner assembly,
Centrifugal switch, Exhaust thermistor, Machine control electronics, Gas supply.

Dryer does not heat:
1. Unplug dryer or disconnect power.
2. Remove the back panel to access the thermal components.
3. Perform TEST #4b. If the thermal fuse is OK, go to step 4.
4. Perform TEST #4c. If the thermal cut-off is OK, go to step 5.
5. Locate the high limit thermostat. Measure the continuity through it by connecting the meter probes on the
red wire and blue wire terminals. If there is an open circuit, replace the high limit thermostat and thermal cutoff.
Otherwise, go to step 6.
6. Perform TEST #4d. If this is OK, replace the machine control electronics.

Heat will not shut off:
1. Unplug dryer or disconnect power.
2. Access the machine control electronics, remove the P14 connector, then measure the resistance between P14-3 (red-white wire) and P14-6 (red-white wire) at the connector. If 5–15 k ohms are measured, replace the machine control electronics. If the resistance is greater than 20 k ohms, replace the exhaust thermistor.

TEST #4a Exhaust Thermistor
The machine control electronics monitors the exhaust temperature using the exhaust thermistor, and cycles the heater relay on and off to maintain the desired temperature. Begin with an empty dryer and a clean lint screen.
1. Plug in dryer or reconnect power.
2. Start the Timed Dry cycle.
3. If after 60 seconds, F-22 or F-23 flashes in the display and the dryer shuts off, the thermistor or wire harness is either open or shorted. Unplug dryer or disconnect power. Check wire connections at the machine control electronics and thermistor. If wire connections are OK, check exhaust thermistor resistance per step 5.
4. If F-22 or F-23 does not flash in the display, the connections to the thermistor are good. Therefore, check the exhaust temperature value at any or all of the temperature levels in question, using the Timed Dry cycle, and the following process: Hold a glass bulb thermometer capable of reading from 90° to 180°F (32° to 82°C)
in the center of the exhaust outlet. The correct exhaust temperatures are as follows:

TEMP
SETTING
HEAT TURNS
OFF*
HEAT TURNS
ON
High
155° ± 5°F
(68°± 3°C)
10–15°F
(6–8°C)
below the
heat turn off
temperature
Medium
140° ± 5°F
(60°± 3°C)
10–15°F
(6–8°C)
below the
heat turn off
temperature
Low
125° ± 5°F
(52°± 3°C)
10–15°F
(6–8°C)
below the
heat turn off
temperature
Extra Low
105° ± 5°F
(41°± 3°C)
10–15°F
(6–8°C)
below the
heat turn off
temperature

The measured overshoot using the glass
bulb thermometer in the exhaust outlet can
be 30°F (17°C) higher.

5. If the exhaust temperature is not within specified limits, or you have come here from step 3, remove the P14 connector, then measure the resistance between P14-3 (red-white wire) and P14-6 (redwhite wire) at the connector. If the resistance is OK, check P14-3 and P14-6 to machine ground. If resistance is greater than 0 (zero), replace wiring harness. NOTE: All thermistor resistance measurements must be made while dryer is
disconnected from power. The following table gives temperatures and ranges for the associated thermistor resistance values.

Temp

F C

Res

kΩ

Temp

F C

Res

kΩ

50° (10°)
19.0 -22.0
80° (27°)
8.5-10.5
60° (16°)
14.8-16.8
90° (32°)
6.8-8.8
70° (21°)
11.5-13.5
100° (38°)
5.0-7.0

If the thermistor resistance does not agree with table, replace the exhaust thermistor. If the thermistor resistance checks agree with the measurements in the table, replace the machine control electronics.

TEST #4b Thermal Fuse
The thermal fuse is wired in series with the dryer drive motor.
1. Unplug dryer or disconnect power.
2. Access the thermal fuse by first removing the back panel.
3. Using an ohmmeter, check the continuity across the thermal fuse. If the ohmmeter indicates an open circuit,
replace the failed thermal fuse.

TEST #4c Thermal Cut-Off
If the dryer does not produce heat, check the status of the thermal cut-off.
1. Unplug dryer or disconnect power.
2. Access the thermal cut-off by first removing the back panel. .
3. Using an ohmmeter, check the continuity across the thermal cut-off. If the ohmmeter indicates an open circuit,
replace the failed thermal cut-off and high limit thermostat. In addition, check for blocked or improper exhaust
system.


TEST #4d Gas Valve
1. Unplug dryer or disconnect power.
2. Access the gas valve by removing the front panel and drum assembly.
3. Use an ohmmeter to determine if a gas valve coil has failed. Remove harness plugs. Measure resistance across terminals.

TEST #5 Moisture Sensor
NOTE: This test is started with the machine completely assembled.This test is performed when an automatic cycle
stops too soon, or runs much longer than expected. NOTE: Dryer will shut down automatically after 2-1/2 hours.
The following items are part of this system: Harness/connection, Metal sensor strips, Machine control electronics
1. Activate the diagnostic test mode and advance past saved fault codes.
2. Open the dryer door. If a continuous beep tone is heard and an alphanumeric number is displayed on the console as soon as the door is opened, a short circuit exists in the moisture sensor system. If this doesn’t happen, go to step 3. Otherwise, go to step 4. NOTE: Over drying may be caused by a short circuit in the sensor system.
3. Locate the two metal sensor strips on the inside of the dryer. Bridge these strips with a wet cloth or finger.
If a continuous beep tone is heard and a software revision number is displayed on the console, the sensor passes the test. Go to step 8. If not, continue with step 4.
4. Access the moisture sensor wires: Remove the lint screen. Remove the two wires holding the lint screen to the top. Remove the four screws from bottom of the duct in rear. Remove the duct from the dryer to access
the moisture sensor.Disconnect the sensor connector.
5. Access the machine control electronics. Remove the connector P13 from the circuit board. Check the main
harness connections between the sensor connector and machine control for a short or open circuit. Replace the main harness if necessary. If the harness is okay, continue with step 6.
6. Measure the resistance across the outermost contacts of the sensor connector that includes the two MOVs. Sensor Harness with MOVs (Metal Oxide Varistors) Sensor Connector Sensor Blower Housing Disconnect sensor connector. If a small resistance is measured, check for debris across moisture strips inside of the drum; clean if debris is present. If debris is not present, replace sensor harness with MOVs. Otherwise go to step 7.
7. Measure the resistance across each of the outermost contacts and the center terminal (ground connection).
If a resistance less than infinity is measured, replace the sensor harness with MOVs.
8. If moisture sensor diagnostic test passes, check the thermistor: Perform TEST #4a. If the problem persists after replacing the moisture sensor, harness with MOVs and thermistor, replace the machine control electronics.


TEST #6 Buttons and Indicators
This test is performed when any of the following situations occurs during the Console Buttons and Indicators Diagnostic Test:

None of the indicators light up No beep sound is heard
Some buttons do not light indicators None of the indicators light up:

1. See Diagnostic Guide/Before Servicing.
2. Perform TEST #1 to verify supply connections.
3. Perform TEST #2.
4. Visually check that the P5 connector is inserted all the way into the machine control electronics.
5. Visually check the user interface assembly connections.
6. If both visual checks pass, replace the user interface assembly.
7. Plug in dryer or reconnect power.
8. Perform the Console Buttons and Indicators Diagnostic test to verify repair.
9. If indicators still do not light, the machine control electronics has failed: Unplug dryer or disconnect power.
Replace the machine control electronics. Plug in dryer or reconnect power. Perform the Console Buttons and Indicators Diagnostic test to verify repair.

No beep sound is heard:
1. Visually check that the P5 connector is inserted all the way into the machine control electronics. If visual check passes, replace the user interface assembly.
2. Plug in dryer or reconnect power.
3. Perform the Console Buttons and Indicators Diagnostic test to verify repair.
4. If replacing the user interface assembly failed: Unplug dryer or disconnect power. Replace the machine control electronics. Plug in dryer or reconnect power. Perform the Console Buttons and Indicators Diagnostic test to verify repair.

Some buttons do not light indicators:
1. Visually check the user interface assembly connections. If visual check passes, replace the user interface assembly.
2. Plug in dryer or reconnect power.
3. Perform the Console Buttons and Indicators Diagnostics test to verify repair.


TEST #7 Door Switch
Activate the diagnostic test mode and perform the Door Switch Diagnostic test.
Functionality is verified with a beep each time the door is closed and opened, and a number and letter appears in the display (i.e., 0E, 09). If any of the above conditions are not met: Unplug dryer or disconnect power.
Check that the wires between the door switch and machine control electronics are connected. If the connections are OK, replace the door switch assembly and retest. If the door switch assembly has been replaced and dryer still does not start, replace the machine control electronics.