Kenmore model 110.77132412 takes too long to dry

[AWSHandy]

A few problems with this one

The dryer starts off at whatever time for the cycle setting.  After a couple of minutes it goes down to 2 minutes.  Must keep restarting.

The dryer takes 2-3 cycles to completely dry a medium load.  I checked the venting.  It is ok.

Could there be a moisture sensor issue, or a control board issue?  This has me puzzled.  Any help appreciated

[Vance R]

17 minutes ago, AWSHandy said:

Could there be a moisture sensor issue, or a control board issue?

Could be either one. Try timed dry to bypass the auto dry features. 

[AWSHandy]

Same issue with timed dry.  Runs for a few minutes, then drops to 2 minutes.  Wet clothes

[KVH]

If it is doing it on timed dry as well there is likely an issue with the control.

I would try running with the vent off just to rule out a venting issue.. (Do not do this for very long with a gas dryer open a window if possible)

[swiftappl]

First thing is, what kind of gas is supplied to this dryer? If it is LP, Has it ever been converted? Dryers are shipped from the factory to use Natural Gas. If you bought it used, was it on LP, and do you have Natural Gas? If the correct gas is connected to the dryer..... You need to check the resistance of the Thermistor on the Blower Housing. Remove the wires off the Thermistor, and remove it from the Blower Housing. At room temperature it should read around 11K Ohms. I would not run a gas dryer, unvented, due to carbon monoxide fumes!

[AWSHandy]

It has always been natural gas.  I just tried a timed dry again.  It went thru the entire cycle.  I will try automatic again.  If the same issue recurs, should I change the moisture sensor or the control board?

[vee8power]

1 hour ago, AWSHandy said:

should I change the moisture sensor or the control board?

The moisture sensor is just 2 strips of stainless steel; not much goes wrong with them. They do get coated; if so you can clean them. Also their connection to the board is sensitive; there's probably a test in diagnostic mode for the sensor circuit.

[AWSHandy]

I replaced the thermistor, and the moisture sensor.  I also went into the attic and removed the vent from the roof connection.  The mesh in the vent was caked with lint, plus the vent is about 20 feet from the dryer, vented with a combination of flex and rigid tube.  I think I have it solved. 

[swiftappl]

It takes 3 things to dry a load of laundry:

1) Movement of air (blower)

2) Movement of clothes (Drum tumbling)

3) Heat (Heating element or gas burner)

If any of these 3 are missing, the dryer will not dry clothes.

Also, if the dryer is gas, the venting needs to be clean and air tight, meaning no air leaks in the duct to prevent carbon monoxide from escaping in the living spaces.