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Re: clothes dryer drys but no heat(electric dryer)
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.
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If it's "dual fuel" like heat pump with gas heat, the heat on the heat-pump side won't "feel" warm in the extreme temperatures we've seen in much of the country lately.....2nd stage gas will feel MUCH warmer. If purely electric, 1st stage heat may be off due to a manually resettable high limit switch/ bad heat contactor (giant relay), or a misapplied or defective thermostat. NOTE: if somebody recently painted OR wallpapered, AND it's a mercury-bulb T-stat, It HAS to be level and the connections must be tight!
The AC unit outdoors must be running and rejecting heat by its air flowing through it the 2 copper lines are the refrigerant lines, the fatter one should be "beer can cold" if not its low on refrigerant or not running.
you will need to get behind the dryer and disconnect the vent tube, try drying a load of clothes with the vent tube disconnected if it drys then the tube is the problem and needs to be cleaned out. If it is not drying at all then it is a few things, I am assuming its electric here is a website that will help:
when was the last time you cleaned out the dryer?unplug the dryer,remove the bottom panel,take out the lint filter and remove the duct that it slides into.clean the duct out,vac out the inside of dryer,if you have a shop vac you can put it on blow and blow the lint forwards so you don't ha ve to remove the drum.put that back together and remove the vent line from the back of dryer,if it's a long run blow it out with a leaf blower,also make sure the outside vent is clear before you blow out the vent line,if the dryer can't move the air around it will run hot.
The first thing you can try is pulling the dryer out and disconnecting the vent hose. Then run a normal load of close through the dryer to see if it drys the cloths quicker. If it does then the element is okay your vent is just plugged somewhere. You can check the temperature of the exhaust air with a meat thermometer which should be 120 to 160 degrees farenheit. If it is not then you may have a bad heating element.
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.
heated air enters the dryer at 140 degrees farenheit,
a portion of the heat energy raises the temperature of the water in the clothes.
When the clothes are cold and wet, the difference is large transfer is rapid
a lot of heat transfers to clothes and the exhaust air is damper and colder
As the clothes get warmer and dryer, proprtionally less heat is extracted from the incoming air, and the exhaust air is warmer and dryer.
When the clothes are dry, and at 140 degrees, the same temperature as the incoming air. no heat is removed from the incoming air
the dryer should then stop heating, draw unheated air through the drum and clothes to cool, and reduce wrinkling
then switch off