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Admiral dryer not heating

Replaced igniter, still not lighting, continuity test of igniter, flame sensor, thermal fuse, top thermostats and bottom thermostat all have continuity.

Posted by Melinda Bowersox on

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1 Answer

Shep

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  • 22 Answers

I have no idea what dryer your talking about due to the fact that there is no model number posted!
most dryers have two thermal fuses which can be found in the diagram.
The timer can be at fault with a contact not closing.
Diagram again!
Motor switch could be at fault, closes heat circuit after motor starts. Diagram again!
dDont throw parts at it until you verify the cause, you have spent enough already.

Posted on Apr 28, 2019

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5 Related Answers

jsrock516

Jeff Rockwell

  • 5911 Answers

SOURCE: no heat

You may have a weak igniter. Just because the igniter glows, does not mean it is working properly. The glow bar type igniters are supposed to draw a certain amount of current in order for the gas valve to open. If the current potential is never met, the gas valve will not open. This is a safety feature used to prevent gas flow without ignition. The current readings for the igniters are as follows: Round style glow bar: 2.7 to 3.2 amps Square style glow bar: 3.2 to 3.7 amps If it is reading less than the required amperage, replace it. This may just solve your problem. Let me know if this helps you.

Posted on Sep 08, 2007

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SOURCE: maytag gas dryer not heating

You may want to disconnect the vent from the back of the dryer and try it. Flame rollback will cycle the burner off by the high limit.

Considering what you have already done to it, if the problem still exists you probably have bad coils on the gas valve. make sure you replace them as a set.

The thermal fuse is a one time device. If it opens, the burner will not come on at all.

Posted on Apr 29, 2009

aasc

Mike Smith

  • 1606 Answers

SOURCE: Whirlpool duet electric wil not heat

Remove 1 wire from the element . Your 220 V comes from ...110 motor , 110 control board . Check which wire is not getting 110 V , trace it and see which it comes from . That will tell you which one is defective .

Posted on Aug 01, 2009

delpolito54

Dave Del Polito

  • 45 Answers

SOURCE: check continuity on a flame sensor

flame sensor is closed when dark, open with the ignitor light. Thermostat is closed when cold, open when reach temperture. Ignitor is a closed circut but high resistant value, put your meter on 10k. Also to the gas valve 110volts be carefull.

Posted on Sep 01, 2009

Anonymous

  • 218 Answers

SOURCE: igniter won't glow

Hi,
I am assuming that everything works OK except you have no heat?
When you turn on dryer listen for gas valve to click(this may take a few seconds).If you don't have a click then the gas valve my be bad or it is not getting power.

Dryer has to be running to check for power only experienced persons should perform machine running power tests.
Let me know If I can do anything else to help.

Posted on Mar 20, 2010

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0helpful
1answer

My LG TROMM DLG9588WM dryer is running but it doesn't get hot what can i do?

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.
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.
If the above check out OK, check the high level 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 circuit" the dryer doesn't heat.
Apr 05, 2015 • LG Dryers
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My whirlpool dryer comes on and runs good but it wont get hot can you tell me whats the problem

Hello there and welcome to fixya there are several things that could make this dryer not heat up
Here are the most common things

Thermal Fuse

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.




Enter your model number to see parts for your dryer.

Help me find my model number


Gas Valve Solenoid

The 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.


Dryer Igniter


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 Element

The 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 Assembly

the 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.

Flame Sensor



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.


Cycling Thermostat




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
defective.


Timer
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
Oct 14, 2013 • Dryers
2helpful
1answer

Dryer not heating

Hello there and welcome to fixya

Here are the most common things that will need to be checked with a meter to ensure there is continuity on these parts no continuity means that the part is bad and needs replacement ok?

Thermal Fuse

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.


Enter your model number to see parts for your dryer.
Help me find my model number


Gas Valve Solenoid

The 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.


Enter your model number to see parts for your dryer.
Help me find my model number


Dryer Igniter

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.


Enter your model number to see parts for your dryer.
Help me find my model number


Heating Element

The 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.


Enter your model number to see parts for your dryer.
Help me find my model number


Heating Element Assembly

The 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.


Enter your model number to see parts for your dryer.
Help me find my model number


Flame Sensor

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.


Enter your model number to see parts for your dryer.
Help me find my model number


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.


Enter your model number to see parts for your dryer.
Help me find my model number


Cycling Thermostat

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.


Enter your model number to see parts for your dryer.
Help me find my model number


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 defective.


Enter your model number to see parts for your dryer.
Help me find my model number

Timer

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
0helpful
1answer

Whirlpool electric dryer high thermostat replacement

test all this steps in according with your model, electric or gas. God bless you


Thermal Fuse

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.


Enter your model number to see parts for your dryer.
Help me find my model number


Gas Valve Solenoid

The 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.


Enter your model number to see parts for your dryer.
Help me find my model number


Dryer Igniter

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.


Enter your model number to see parts for your dryer.
Help me find my model number


Heating Element

The 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.


Enter your model number to see parts for your dryer.
Help me find my model number


Heating Element Assembly

The 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.


Enter your model number to see parts for your dryer.
Help me find my model number


Flame Sensor

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.


Enter your model number to see parts for your dryer.
Help me find my model number


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.


Enter your model number to see parts for your dryer.
Help me find my model number


Cycling Thermostat

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.


Enter your model number to see parts for your dryer.
Help me find my model number


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 defective.


Enter your model number to see parts for your dryer.
Help me find my model number


Timer

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.
Jul 21, 2013 • Dryers
0helpful
1answer

Non Glowing Igniter

What solenoids are you referring to?

When you set the timer and heat selector switches on your dryer and press the button [switch] to turn it on, the direction of 120VAC passes through the heat selector switch through the timer switch through the cycling thermostat through the hi-limit switch, through the thermal cut-off fuse to the burner assembly's gas valve.

Simultaneously, as the current is traveling through a path to the 1st gas valve coil, current is also traveling through a path to the flame sensor- and then to the igniter.

The igniter will begin to glow and when it gets hot enough, the flame sensor will detect the heat and switch off. which then diverts current to the second gas valve coils.

The second gas valve coils activate plungers in the gas valve which allows gas to flow out into the burner housing. The igniter still being hot, ignites the gas to a long blue flame.

To maintain the proper air temperature, the heat in the blower housing is monitored by the cycling thermostat. During normal operation, air temperature should be between 120 degrees Fahrenheit and 160 degrees Fahrenheit.

When the air reaches the proper temperature specific to your dryer model, the cycling thermostat will switch off the voltage to the burner assembly.

The hi-limit thermostat and thermal cut-off fuse monitor the drum air temperature. If there is an air flow problem [restriction or total blockage], the hi-limit thermostat may switch off the voltage to prevent damage to the dryer.

Eventually, if the air flow problem [restriction or total blockage] is not corrected, the thermal cut-off fuse will fail (blow) and the dryer won't heat at all.

Check continuity to the following components, thermal cut-off fuse, hi-limit thermostat, igniter, flame sensor, and cycling thermostat. Of course you will take your readings with the power cord of the dryer unplugged from the wall outlet.

You will either disconnect [isolate] any of the wire leads going to their respective components during the test [using a multimeter (analog or digital)]; OR remove each of the components entirely from the dryer to test them.

1.) A good thermal cut-off fuse will have 0 Ohms of resistance. On the other hand, if the needle [on a an analog tester] does not move OR the digital display [on a digital meter] has not changed significantly, there is NO continuity - which means the fuse has burned out and needs to be replaced

2.) A dryer's Hi-Limit Thermostat is activated by hi-temperature changes (between 250 degrees Fahrenheit and 300 degrees Fahrenheit.

A good hi-limit thermostat will have 0 Ohms of resistance at room temperature.

To test the thermostat's response to temperature change, place the component on an electric griddle or skillet. Set the heat on the skillet or griddle to the appropriate temperature according to the temperature rating stamped on the hi-limit thermostat you are testing. If the hi-limit thermostat switches off within 5% of that temperature, the part is functioning properly. However, if the hi-limit thermostat does not switch off OR switches off prematurely, the hi-limit thermostat is faulty and will have to be replaced. [Remember, when the switch turns off at the appropriate temperature level- you should get a high resistance reading to show that the circuit is "open")

3.) Perform the same procedure as step 2 to test the Cycling Thermostat: First at room temperature and then its response to temperature change. The only difference is, the test temperature range will be somewhere between 120-160 degrees Fahrenheit Once again, refer to the temperature rating stamped on the component you are testing- and the 5% tolerance remains the same, too.

4.) The resistance reading for the igniter is between 50 and 400 Ohms of resistance; anything else, it's faulty- toss it and replace it.

5.) You should get a resistance reading of 0 Ohms at the flame sensor-

Flame sensors are tricky though. Flame sensors could still short out and
allow the igniter to glow- but would prevent voltage from reaching the gas coil. For example, the igniter will glow and not turn off and a flame will not be established because there was no voltage at the gas coil to open up and release gas for ignition.

Hope this info helps...I would appreciate a follow-up from you when you resolve this problem- to gain more knowledge and skill.

Thank-you and best wishes on your project
0helpful
2answers

Dryer starts and flame lights then shuts off. How do I test the flame sensor or something else?


If your dryer is not heating, then check if the power cord is plugged into the wall. It may be loose or disconnected. Inspect the fuses and circuit breakers they may have burned out or tripped. Usually, dryer will still tumble but not create heat if a fuse or a circuit breaker is not working. Now, check whether the heating element in your gas dryer is burned out by using an ohm meter to check for continuity. If the continuity is not there then you would need to replace the element. After checking the element, check out the thermal fuse to see if it's burned out. The thermal fuse is attached to the exhaust duct on the back panel of the gas dryer. It's usually surrounded by a black resin material situated in a housing made of white plastic. If the fuse looks like it's blown, then it needs to be replaced.
Now, check the igniter, there is a plastic connector attaching the igniter to the burner. Disconnect this and place the probes onto the two contacts of the igniter. The meter should read under 100 Ohms of resistance. If the reading is above 100 ohms then igniter is bad. If the igniter passes the test then you need to test continuity on the flame sensor. You should have continuity between the two contacts. Use a multimeter to check the continuity at the flame sensor. If not, then you need to replace the flame sensor. The sensors are usually located close by the igniter so are easily visible. Post back in case further assistance is required. Hope this helps...
Daniel
1helpful
2answers

No heat on any setting

If the dryer isn't heating, check for a blown thermal fuse or a faulty heating element. Both components can be tested using a multimeter or ohmmeter. Check for continuity. A lack of continuity indicates a faulty component. Both components are located in the rear of the dryer. The thermal fuse is about an inch long and is usually attached to or near the exhaust duct. Sorry for your trouble and I hope this helped. Best wishes.
Sep 16, 2009 • Dryers
0helpful
1answer

No heat replaced ignitor unit and tested sensors

Check the following areas to combat this issue. the most common problem spot will be a blown Thermal fuse.


1. Gas valve coils
Igniter glows, then shuts off without igniting gas - the problem is probably with defective coils (black, located on top of the gas valve). It is recommended to replace all coils (usually two or three) if found defective.

Note: Sometimes the whole gas valve may be defective, thus not letting the gas out. However, this problem is not common.

2. Thermal fuse
Most dryers have a thermal fuse, which burns out when the dryer overheats, in which case the dryer will either not run at all or stop heating. The fuse is usually located on the vent duct, inside the dryer. A blown fuse will show no continuity when measured with a meter. Before replacing the fuse, make sure the blower wheel is not broken or clogged, and there is nothing blocking the venting.

Note: It is recommended by most dryer manufacturers to replace a hi-limit thermostat when replacing a thermal fuse.

3. Igniter
Igniter may burn out or break. Replace the igniter if found defective.

Note: Igniters are very fragile and break easily. It is recommended to handle the igniter only touching the ceramic part of it (usually white in color).

4. Flame sensor (or radiant heat sensor)
Replace the sensor (located near the igniter) if found defective.

0helpful
1answer

No Heat

Hello
Welcome to Fixya


Remove the vent line from the rear and try the dryer.
If it heats then that means there is a clog or kink in the vent line blocking the vent air from exiting which will stop the dryer from getting hot!
If not then it's another one of these problems.

Defective Ignitor (Gas Only)
When heated the ignitor used on your gas dryer must obtain a specific high temperature
in order to activate the flame sensor. This ignitor is fragile and susceptible to cracking.
A hairline fracture that is barely visible to the naked eye is enough to change
the resistance of the ignitor to a point that is will not work properly.
You can test the resistance of your ignitor. You should get a reading of 50-400 ohms of
resistance.

If the ignitor gets hot and then goes off after about 10-15 seconds and there is
no ignition, the problem is probably not the ignitor. It is most likely the gas valve
coils that are defective.

If the ignitor comes on and stays on, it is the flame sensor that is defective.

If the ignitor is not getting hot it could also be one of the thermostats that is defective.
The power for the ignitor is passed from the timer, through all of the thermostats,
limit switches and fuses to the ignitor. So if you are not getting power to the ignitor
during ignition, you should check the continuity of the individual thermostats and fuses.
DRYER DOES NOT HEAT



Defective Gas Valve Coil (Gas Dryer Only)

If the gas dryer will light once but will not relight until it cools down, it is likely the gas valve coils are faulty. These coils loose some strength when subjected to heat. When they become old, the addition of heat may be enough to prevent them from opening the gas valve when hot. However the coils still work when when cool.

An easy way to diagnose the coils when the burner is not lighting, watch the ignitor. If the the ignitor glows for 10 to 15 seconds but no flame is created, then the coils are faulty. If the ignitor is not glowing the problem is elsewhere.

Recent Customer Symptoms:
The dryer burner doesn't always come on when starting. If the burner does come on, once it goes off if won't come on again until the dryer cools down.



Defective Flame Sensor (Gas Dryer Only)
The flame sensor's job is to monitor the ignitor for sufficient heat
to ignite the gas. A properly operating flame sensor will pass a
continuity check under room temperature.

Common Symptoms
If the flame sensor is defective in the open position,
the ignitor will not get hot when the dryer is started.
However, if it is defective in the closed position the ignitor
will get hot, but the flame sensor will not allow the flame to ignite.
In this case, the ignitor will usually stay hot for a long period of
time.



Defective Thermostat
The thermostats are responsible for maintaining the proper temperature
in the dryer. Check the exhaust temperature of the dyer and if the
temperature is above 150 degrees, you will most likely need to change
the operating thermostat.

The thermostat can also fail in the opposite mode.
It can prevent the element from heating at all.
A failed continuity check at room temperature will verify this condition.

There are some special thermostats that are single pole double throw.
These thermostats are often used to control the timer when set to the
Automatic Dry cycle. If the dryer timer will advance in the Timed Dry
cycle but not the Automatic Dry cycle, then the thermostat could be the
problem.


Defective Thermal Fuse
The thermal fuse is in series with one leg of power to the motor.
If the fuse is open (no continuity) the motor will not run.

Location:
The thermal fuse is located in different locations according
to the model and brand of dryer.

Solution:
Check the thermal fuse for continuity with a volt/ohm meter.
If it is open, it will need to be replaced






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