Question about Kenmore 63942 Dryer

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Kenmore Dryer 90-Series (purch'd.in 1999)won't always start. When you push the button, it buzzes -- sometimes it will start, and when it does it only runs for 10 minutes and shuts off. Most times the dryer will not start. When the dryer runs, the drum rotates and there is heat, but no matter what setting it's on, it only runs for 10 minutes & shuts off.

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HI. I recommend testing the actual door switch for its operational value first.

The door switch may be accessible without removing the front panel or cabinet. The switch is located in the front panel of the dryer, around the perimeter of the door opening. Inspect the switch to determine if it can be popped out or accessed by removing a fastening screw. If it cannot be accessed from the front, it will be necessary to open the dryer cabinet. When reaching into the dryer be careful of sharp edges on the cabinet and interior supports.

Access varies by model, if your dryer has a lower front panel (kick plate) start there. It should lift up and off or it may be held in place with a few screws or snaps; it may also have a catch at the edges or center gap between the kick panel and main panel. To release the catch, push a putty knife, wrapped with masking tape, into the gap and push back the catch. The next easiest access point is the rear panel. The rear access panel is held in place with several screws along the outer edges. The last resort method of access is the removal of the entire front panel. The front panel supports the front of the drum and so removal is more difficult. Front panel removal varies. In general, access is gained by lifting the top (remove the lint trap screws first), removing the screws that secure the front panel, and detaching the panel from the drum.

Locate the start switch, it typically has two wires connected to it. Label the wires and connections so that you can properly reconnect them later. The wires are connected with slip on connectors. Firmly pull the connectors off of the terminals (do not pull on the wire itself). You may need to use a pair of needle-nose pliers to remove the connectors. Inspect the connectors and the terminals for corrosion. If either is corroded they should be cleaned or replaced.

Use a multimeter to test for continuity. Set the meter to the ohms setting X1. For a two wire switch, touch one probe to each terminal. You should get a reading of infinity. With the probes still in place, press and hold the switch, the reading should change to zero.

If the switch does not test as described, it should be replaced.

Now, if the door switch is ok and operational, move on to the start switch.

Locate the start switch, it will have two or three wires connected to it. Label the wires and connections so that you can properly reconnect them later. The wires are connected with slip on connectors. Firmly pull the connectors off of the terminals (do not pull on the wire itself). You may need to use a pair of needle-nose pliers to remove the connectors. Inspect the connectors and the terminals for corrosion. If either is corroded they should be cleaned or replaced.

Use a multimeter to test for continuity. Set the meter to the ohms setting X1. For a two wire switch, touch one probe to each terminal. You should get a reading of infinity. With the probes still in place, press and hold the start switch, the reading should change to zero.

For a three wire switch, touch one probe to the terminal labeled NC (or CT1) and touch the other probe to the terminal labeled CO (or R1). You should get a reading of infinity. With the probes still in place, press and hold the start switch, the reading should change to zero.

If the switch fails either test, it should be replaced.

Now, if the door switch and start switch check out ok, this will lead to a failing control sector. This damaged timer or control board must be replaced in this case.


NOTE

You can gain access to the start switch by removing the back side of the control panel, or totally removing the complete control panel housing form the top of the unit as well.


Posted on Oct 05, 2009

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