Question about Dryers
I ran the dryer for more than a hour and it's still cold.
Hello there and welcome to fixya there are several things that could make this dryer not heat up
Here are the most common things
If the dryer doesn\'t heat, but the drum
turns, check the thermal fuse(s). The thermal fuse protects the dryer
from overheating and helps to prevent fires. If the thermal fuse is
blown, it will have to be replaced.
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Gas Valve SolenoidThe gas valve has two or more electric
solenoids which open the valve to let the gas flow into the burner
assembly. If the dryer doesn\'t heat one or more of the solenoids may be
defective. If the igniter glows for 90 seconds but the burner flame
doesn\'t light, replace these coils as a set.
If the dryer doesn\'t heat, the igniter might
be burned out. Check the igniter for continuity with an ohm meter. Dryer
igniters burn out over time, similar to a light bulb.
Heating ElementThe heating element on an electric dryer can
burn out over time. If the dryer doesn\'t heat, the element should be
checked for continuity. The heating element cannot be repaired and must
be replaced if defective.
Heating Element Assemblythe heating element assembly on an electric
dryer can burn out over time. If the dryer doesn\'t heat, the element
assembly should be checked for continuity. The heating element assembly
cannot be repaired and must be replaced if defective.
Gas dryers have a flame sensor to detect the
heat given off by the flame. If the dryer doesn\'t heat, the flame sensor
might be defective. Check the flame sensor for continuity. This is not
as common as a burned out igniter or thermal fuse.
High Limit Thermostat
Although not common, if the dryer doesn\'t
heat the high limit thermostat can be defective. It can be checked for
continuity. If the thermostat is "open" the dryer doesn\'t heat.
The cycling thermostat regulates the
temperature of the air in the dryer. If the dryer doesn\'t heat it may be
caused by a defective cycling thermostat. This is not common.
Main Control Board
The main control board is normally not at
fault when the dryer doesn\'t heat. Check all of the other components in
this troubleshooting guide before replacing the main control board. The
main control board cannot be tested easily and must be replaced if it is
The timer is normally not at fault if the
dryer doesn\'t heat. In many situations where timers are replaced they
end up being returned. Check all of the more common components in this
troubleshooting guide before replacing the timer
Posted on Oct 14, 2013
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Posted on Jan 02, 2017
SOURCE: whirlpool dryer
The following link will give you some additional advice on how to troubleshoot a dryer:
Read through the link provided, thoroughly. It does cover many common dryer problems and how to diagnose them.
You know at this point that have power to the unit, because the drum light is working. Now...with the door open, does the light go out when you push the door switch in by hand? Is that how you determined the switch to be good? If the light does not go off, the switch may not be working properly and the dryer will not start. Another easy item to check is the thermal FUSE. The fuse is located behind the lower panel under the door. It is a white plastic component mounted to the top of air blower housing right under the drum in the front. There should be two wires going to it. If the thermal fuse is good, it should read a short (or close to zero ohms). These two first items I mention will kill a dryer from starting and are the most common problems to start with. Read through the section "Dryer Does Not Run at All" and let me know if require further assistance. I hope you find this information helpful.
Posted on Nov 08, 2008
If your dryer heats when you first turn it on and after a few minutes it does'nt. check the ignitor to see if it is glowing. It should glow bright then you will hear a click and the burner will light. If the ignitor glows bright but you hear a click but no flame and if you watch this for several minutes and this process continues of glow then glow goes out no flame, then you have a bad burner coil. There are 2 black solenoids sitting on top of gas valve. One of them is shorting out after it warms up. Replace both solenoids. You can usually get them as a kit from parts store.
Posted on Feb 04, 2010
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