Whirlpool Dryer Service Manual

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Whirlpool three-digit display control panel

Whirlpool two-digit display control panel

DIAGNOSTIC GUIDE

Before servicing, check the following:

• Make sure there is power at the wall outlet.
• Has a household fuse blown or circuit breaker tripped? Was a regular fuse used? Inform customer that a time-delay fuse is required.
• Is dryer vent properly installed and clear of lint or obstructions?
• All tests/checks should be made with a VOM (volt-ohm-milliammeter) or DVM (digital-voltmeter) having a sensitivity of 20,000 Ohm per volt DC or greater.
• Resistance checks must be made with dryer unplugged or power disconnected.
• IMPORTANT: Avoid using large diameter probes when checking harness connectors as the probes may damage the connectors upon insertion.
• Check all harnesses and connections before replacing components. Look for connectors not fully seated, broken or loose wires and terminals, pin insertion, or wires not pressed into connectors far enough to engage metal barbs.
• A potential cause of a control not functioning is corrosion or contamination on connections. Use an ohmmeterto check for continuity across suspected connections.

SERVICE DIAGNOSTIC MODE

These tests allow service personnel to test and verify all inputs to the machine control electronics. You may want to do a quick and overall checkup of the dryer with these tests before going to specific troubleshooting tests.

ACTIVATING SERVICE DIAGNOSTIC MODE

1. Be sure the dryer is in standby mode (plugged in with all indicators off).
2. Select any three (3) buttons (except POWER) and follow the steps below, using the same buttons (remember the buttons and the order that the buttons were pressed): Within 8 seconds,
   • Press and Release the 1st selected button,
   • Press and Release the 2nd selected button,
   • Press and Release the 3rd selected button;
   • Repeat this 3 button sequence 2 more times.
3. If this test mode has been entered successfully, all indicators on the console are illuminated for 5 seconds with "888" or "88" showing in the Estimated Time Remaining three- or two-digit display. If there are no saved fault codes, all indicators on the console will momentarily turn off, and then only the seven segment display will come back on and display "888" or "88".

NOTE: The Service Diagnostic mode will time out after 10 minutes of user inactivity, or shut down if AC power is removed from the dryer.

Unsuccessful Activation

If entry into diagnostic mode is unsuccessful, refer to the following indications and actions:
Indication 1: None of trie indicators or display turn on.
Action: Select any cycle.
If indicators come on, try to change the function for the three buttons used to activate the diagnostic test mode. If any button is unable to change the function, something is faulty with the button, and it will not be possible to enter the diagnostic mode using that button. Replace the user interface and housing assembly.

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