August 1, 2014

How to replace a dryer electronic control board

By Lyle Weischwill
How to replace a dryer electronic control board

This step-by-step dryer repair guide shows how to replace the electronic control board in a dryer. Because the electronic control board manages all of the dryer's components and controls the dryer cycle times, it's difficult to pinpoint the control board as the source of a problem. Unless you see obvious damage to the control board, have a trained service technician do advanced diagnostic tests before replacing the dryer control board with a manufacturer-approved replacement part.

The video below shows a gas dryer, but the basic repair is the same. Use this procedure to replace the electronic control board in many Kenmore, Frigidaire and Electrolux dryers. You also can use the same basic steps to replace the electronic control board in some Whirlpool, Maytag, Amana, Samsung, LG and GE dryers.

Quick links
Tools required
1/4-inch nut wrench
Small slot screwdriver
Vacuum
Work gloves
Ground strap (optional)
Repair difficulty
Time required
45 minutes or less
Repair difficulty
Time required
45 minutes or less
Replacing an electronic control board on a dryer

This video explains how to replace the electronic control board on a dryer.

Instructions

  1. 01.

    Shut off the power

    Unplug the dryer. If it's a gas dryer, shut off the gas.

  2. 02.

    Remove the top panel

    Slide the dryer away from the wall. On the back of the dryer, locate the two hex-head screws that secure the top panel to the frame. Remove the screws using a 1/4-inch nut driver.

    Pull the top panel back slightly to release the tabs behind the console. Pull the top panel up and off of the dryer.

    Tip: While you have the dryer cabinet open, vacuum the dust and lint from the dryer cabinet.
    Remove the screws from the back of the dryer top panel.

    Remove the screws from the back of the dryer top panel.

    Release the tabs behind the front console.

    Release the tabs behind the front console.

    Pull the top panel up and off of the dryer.

    Pull the top panel up and off of the dryer.

  3. 03.

    Remove the electronic control board

    Take a digital picture of the wiring connections so you can connect the new control board correctly.

    Using a slot screwdriver, release the locking tabs from the wire connectors. Pull the wire harness plug from the connection receptacle on the electronic control board.

    Remove the single hex head screw with a 1/4" nut driver. Slide the electronic control board to release it from the support bracket slots. Set the electronic control board aside for disposal.

    Tip: With some units, the wire harness has enough slack to let you detach connections one at a time and immediately attach them to the new control board—a sure way to get the connections right.
    Release the locking tabs on the control board wire harness connectors.

    Release the locking tabs on the control board wire harness connectors.

    Remove the control board mounting screw

    Remove the control board mounting screw

    Remove the control board from the support bracket.

    Remove the control board from the support bracket.

  4. 04.

    Attach the new electronic control board

    Before removing the new control board from the package, touch the dryer's metal cabinet to dissipate static electricity.

    Position the new control board on the support bracket and push it into the mounting slots. Lock it into place so it lines up the mounting screw hole. Replace the mounting screw. Avoid overtightening by turning the screw with the nut driver until it stops and then give the screw one firm twist to snug it in place.

    Tip: If you have a grounding strap, put it on and clip the lead to the cabinet before touching the new control board.
  5. 05.

    Connect the wires

    Using your digital photo as a guide, connect the wires to the new electronic control board. Push the wire harness plug until its locking tab snaps into place. The plugs fit together only one way; if they aren't fitting together easily, reorient them. Never force the plugs into place.

    Warning: Connecting the wires incorrectly can damage dryer components. If you’re unsure about the connections, have a service technician complete the repair.
  6. 06.

    Reinstall the top panel

    Place the panel on the top of the dryer and position it slightly away from the tabs behind the control panel. Push the panel forward to engage the tabs. Work the panel into place and replace the mounting screws at the back of the dryer.

  7. 07.

    Restore the power

    If it's a gas dryer, turn on the gas supply to the dryer. Plug the dryer into the wall outlet.

Warning: Undertaking repairs to appliances can be hazardous. Use the proper tools and safety equipment noted in the guide and follow all instructions. Do not proceed until you are confident that you understand all of the steps and are capable of completing the repair. Some repairs should only be performed by a qualified technician.

Symptoms common to all dryers

Choose a symptom to see related dryer repairs.

Main causes: door switch failure, lack of power, broken belt, blown thermal fuse, bad drive motor, control system failure
Main causes: clogged exhaust system, heating system failure, deposits on moisture sensor, control system failure
Main causes: bad drum support roller, damaged idler pulley, broken blower fan blade, worn drum glide bearing, bad drive motor
Main causes: bad gas valve coils, broken heating element, tripped safety thermostat or fuse, bad operating thermostat, control failure
Main causes: bad timer or electronic control board, door switch failure
Main causes: lack of electrical power, bad power cord, wiring failure, bad control board, blown thermal fuse, bad door switch
Main causes: clogged exhaust vent, bad motor relay, loose dryer door catch, bad door switch, control system failure, faulty drive motor
Main causes: damaged door strike, worn door catch

Repair guides common to all dryers

These step-by-step repair guides will help you safely fix what’s broken on your dryer.

August 1, 2014
By Lyle Weischwill
How to replace a dryer blower wheel

A rattling noise or lack of air flow through the dryer could indicate that the blower wheel is damaged. Follow the steps in this repair guide to replace the blower wheel in your dryer.

Repair difficulty
Time required
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August 1, 2014
By Lyle Weischwill
How to install a dryer gas valve coil kit

If the dryer heats initially but then stops heating, the problem is usually the gas valve coils. This step-by-step guide explains how to replace the gas valve coils in a gas dryer.

Repair difficulty
Time required
 90 minutes or less
August 1, 2014
By Lyle Weischwill
How to replace a dryer drive belt

If the drive belt breaks, the motor runs but the drum won't rotate. These step-by-step instructions guide you through the repair process.

Repair difficulty
Time required
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Articles and videos common to all dryers

Use the advice and tips in these articles and videos to get the most out of your dryer.

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