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insane666

Samsung Dryer DV306BEW/XAC will not stop after reaching 1 minute left

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I have a dryer (DV306BEW/XAC) that after reaching 1 minute left will continue to run forever. I think I've tested and tried almost everything I can think of. There is no lint blockage or error codes and everything runs perfectly except that it will not shut off. For some reason, it will stop on its own with the front of the dryer off. I bypassed the door switch and ran it for 6 minutes (The shortest setting) and every time it stops by itself after the 6 minutes. But, when the door is put back on, it will not shut off. I disconnected the moisture sensor, so I don't believe that is the cause. I replaced a thermistor and a thermostat cutoff in the exhaust, but that did not have any affect. Seeing as how everything runs fine, I don't believe it is the control board either. Anyone have any ideas?

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... it will stop on its own with the front of the dryer off.
Dryer Cabinet must be assembled for correct air-flow.

May be shutiing OFF from over-heating with Front removed.

Is is stopping at 1 minute only in the Auto Dry Cycle, or also in the Timed Dry Cycle ?

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I agree, having the front off is likely the key - can you run the machine with the vent disconnected and see what happens ?

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Dryer Cabinet must be assembled for correct air-flow.

May be shutiing OFF from over-heating with Front removed.

Is is stopping at 1 minute only in the Auto Dry Cycle, or also in the Timed Dry Cycle ?

The machine is not stopping at all. Once the timer reaches 1 minute, it will continue to run until I manually turn it off. Found this problem after it burnt a couple loads.

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For some reason, it will stop on its own with the front of the dryer off. I bypassed the door switch and ran it for 6 minutes (The shortest setting) and every time it stops by itself after the 6 minutes.

The difference being the airflow - if it is still heating when the control shows 1 minute (no matter how long it runs) it could well be a failure in the control

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can you run the machine with the vent disconnected and see what happens ?

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Ok, I ran it with the vent disconnected and it worked 3 times in a row. So I guess that means there is a blockage in the vent? I went outside and felt air coming through the vent though.

A question... why would a blocked vent prevent the machine from shutting off?

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It doesn't have to be blocked, just restricted enough to cause an imbalance of the time on/time off cycles of the element - this is monitored by the thermister and the rate of temperature; bottom line is that you just proved the vent is the issue by successfully running it disconnected so whatever you have is inadequate for THAT dryer

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Dryer Vent

Vent should be rigid metal.
Short lengths of flexible metal may be OK, if not crimped when moving the Dryer into place.
NO plastic
NO PVC
NO screws
Foil Duct Tape is OK.
With an empty load, Timed Dry, High Heat,
the vent temperature should cycle somewhere between 135F and 160F

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<<<why would a blocked vent prevent the machine from shutting off?>>>

***********

The MOISTURE SENSOR (two silver bars on the opposite side of the lint filter housing) is still sending a signal to the main board.

This indicates that the laundry is NOT yet dry within the pre-programmed time (each sensor dry cycle has a set maximum run time).

Eventually the **pause/hold** at 1 minute-remaining will "Time-Out" and the dryer will shut-off regardless if the laundry dried or not.

If the vent system is "buried" in the wall of the home---it will be *necessary* to have a professional vent cleaning company to fully & completely clear it.

The ONLY exception to this would be...

If the dryer stalls at 1 minute remaining & the laundry is DRY---the MAIN BOARD is at fault.

When this occurs--customers often describe what is known as "Marching Ants" dancing around the perimeter of the DISPLAY on the control panel.

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