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send the model number.if this is electric try this.put it on air fluff and start it,if it has heat your element is bad,it's grounding out,part of the element is touching the metal case around the element.if it just did this on auto i would say change the cycling thermostat but on timed dry it just counts down like a clock.i saw this once and the element was bad,grounding out.it was tricky i thought it was the timer also.
There is a sensor that the clothes have to touch when the drum spins. This sensor measures how wet the clothes are. If you don't have enough of a load in the dryer then the sensor wont detect the dryness. Or it could be a bad sensor or connection or main board.
Clogged Vent If your dryer seems to run forever, it could be because of a clogged vent or internal ductwork. Your dryer may have an automatic cycle that turns off the dryer when the clothes are dry. It does this with a special thermostat or moisture-sensing system. Normally, this is what happens during an automatic cycle: The thermostat tells the dryer to heat until the interior of the dryer reaches a pre-set temperature--say 135 degrees. When the dryer reaches the pre-set temperature, the thermostat tells the timer to begin advancing. (If there's a moisture sensor, the timer advances only if the moisture content of the clothing is low enough.) The timer advances until the interior cools, then the thermostat tells the timer to stop advancing, and tells the dryer to start heating again. This cycle continues until the clothes are dry. But...if the vent is clogged, the dryer may never reach the proper operating temperature, so it doesn't send the signal to the timer and the dryer continues to run indefinitely, even if the clothes are completely dry. To fix the problem, clean the vent and/or internal ductwork. Heating Element Your dryer's heating element may be partially burned out. If it is, your dryer still heats, but at such a low temperature that it takes three or four times as long to dry the clothes. If the element is partially burned out, replace the heating element. You can check for an ohm reading but will need to refer to the service manual for proper reading. This sometimes on the tech sheet located somewhere on the dryer. Usually between 9-13 ohms. Cycling thermostat Although this isn't a common problem, one of the thermostats that controls the temperature in your dryer may break and cause the dryer to heat poorly. If so, you need to replace it. The thermostat is usually a small, round, black device mounted to an oblong steel plate. The plate is mounted to the internal ductwork . This thermostat usually has four wires going to it. Check the 2 terminals that are opposite each other and are the closer together of the 2. These 2 terminals should have continuity. If not replace the thermostat. Please take time to rate me Bud
If your dryer seems to run forever, it could be because of a clogged vent or internal ductwork. Your dryer may have an automatic cycle that turns off the dryer when the clothes are dry. It does this with a special thermostat or moisture-sensing system.
Normally, this is what happens during an automatic cycle:
The thermostat tells the dryer to heat until the interior of the dryer reaches a pre-set temperature--say 135 degrees.
When the dryer reaches the pre-set temperature, the thermostat tells the timer to begin advancing. (If there's a moisture sensor, the timer advances only if the moisture content of the clothing is low enough.)
The timer advances until the interior cools, then the thermostat tells the timer to stop advancing, and tells the dryer to start heating again.
This cycle continues until the clothes are dry. But...if the vent is clogged, the dryer may never reach the proper operating temperature, so it doesn't send the signal to the timer and the dryer continues to run indefinitely, even if the clothes are completely dry. To fix the problem, clean the vent and/or internal ductwork.
Heating Element
Your dryer's heating element may be partially burned out. If it is, your dryer still heats, but at such a low temperature that it takes three or four times as long to dry the clothes. If the element is partially burned out, replace the heating element. You can check for an ohm reading but will need to refer to the service manual for proper reading. This sometimes on the tech sheet located somewhere on the dryer. Usually between 9-13 ohms.
Cycling thermostat
Although this isn't a common problem, one of the thermostats that controls the temperature in your dryer may break and cause the dryer to heat poorly. If so, you need to replace it. The thermostat is usually a small, round, black device mounted to an oblong steel plate. The plate is mounted to the internal ductwork . This thermostat usually has four wires going to it. Check the 2 terminals that are opposite each other and are the closer together of the 2. These 2 terminals should have continuity. If not replace the thermostat. This is a Free answer, Please rate me.
Their are 2 types of dryers. Electronic dryness sensing style and Autodry style. Yours is Autodry. Electronic dryers have a dryness board which relies on info from moisture sensing bars that the wet clothes rub against. AutoDry models like yours alternates the power between the heating element and the timer motor. This is what you heating assembly looks like:
Check all the components on the heating assembly for continuity.
Check the following areas thoroughly to address this issue.
1. Venting Make sure the dryer vent hose, as well as the rest of the vent duct, is not clogged.
Unless regular maintenance is performed, chances are there is a lot of lint accumulated inside the dryer. This might affect the drying time and could be a fire hazard. Make sure to have your dryer cleaned regularly. Because this might involve taking most of the dryer apart, it is recommended to have a qualified appliance repairman perform this task.
2. Thermostat There are a couple of cycling thermostats inside the dryer. If one of them breaks down, it might affect the dryer's performance. Replace the defective thermostat.
3. Heating element A heating element might only be partially burned out, in which case it would still work but will take longer time to dry the clothes. Replace the element if found defective.
4. Moisture Sensor Most units will have a moisture or dryness sensor as well that will fail. inspect the sensor for faults. replace if necessary.
Check the following areas thoroughly to address this issue.
1. Venting Make sure the dryer vent hose, as well as the rest of the vent duct, is not clogged.
Unless regular maintenance is performed, chances are there is a lot of lint accumulated inside the dryer. This might affect the drying time and could be a fire hazard. Make sure to have your dryer cleaned regularly. Because this might involve taking most of the dryer apart, it is recommended to have a qualified appliance repairman perform this task.
2. Thermostat There are a couple of cycling thermostats inside the dryer. If one of them breaks down, it might affect the dryer's performance. Replace the defective thermostat.
3. Heating element A heating element might only be partially burned out, in which case it would still work but will take longer time to dry the clothes. Replace the element if found defective.
NOTE***(This unit is equipped with a dryness control board. if all points above check out ok, replace this board).
To start ensure that heating element and fan are working. The element can be tested reading ohms with a multimeter. The fan can be tested evengizing it. If the fan and element are Ok, then test and eventually replace dryness sensor and timer board. Dryness sensor can be tested using a multimeter.
Note: Normal drying time for a dryer
is about 45 minutes (some may take up to an hour).
1. Venting
Make sure the dryer vent hose, as well as the rest of the vent duct,
is not clogged.
Unless regular maintenance is performed, chances are there is a lot
of lint accumulated inside the dryer. This might affect the drying
time and could be a fire hazard. Make sure to have your dryer
cleaned regularly. Because this might involve taking most of the
dryer apart, it is recommended to have a qualified appliance
repairman perform this task.
2. Thermostat
There are a couple of cycling thermostats inside the dryer. If one
of them breaks down, it might affect the dryer's performance.
Replace the defective thermostat.
3. Heating element
A heating element might only be partially burned out, in which case
it would still work but will take longer time to dry the clothes.
Replace the element if found defective.
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