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I have an old Dryer Model DIAG. It runs but the ignitor doesent go on. I tested the ignitor and it works however the wires to it do not test for any current when I push the start button. I would assume that they should be getting 120V. It seems like the circuit that energizes the ignitor is not working. Are there any internal fuses on this model? What do you recommend to try to get it to work. Norm

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  • njskop Feb 03, 2010

    Is the dryer control thermostat the same asthe sensor on the burnig tube?

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  • Dryers Master
  • 8,220 Answers

Gas dryers have a duct fuse mounted on the blower housing next to the control klixon. In the same circuit as the dryer control thermostat/klixon. when the filt housing or filter/blower venting is clogged and the temp in the drum rapidly rises to 350f the fuse melts killing power to the gas valve assembly. The dryer remains running.

Posted on Feb 03, 2010

Testimonial: "Thanks much. I think I can handel this. By the way, the sensor is OK since it's resistance measures zero."

  • Dan Webster
    Dan Webster Feb 03, 2010

    The dryer control mounts on the blower housing, it measures drum temp. It mounts on the blower housing. The flame sensor on the burner tube serves to shut down the ignitor @1800f, with the ignitor shut down the coils will have now enough amp draw to energize and the gas flows out onto the screaming hot ignitor. This heated air gets drwan into the drum and out of the vent via the blower housing. As the warmed air hits the control thermostat it heats it up. When the temp reaches 160f then the control bi-meal inside separates the contacts and kills the power to the gas valve assembly. If for some reason the temp rapidly reaches 350f then that fuse melts killing power to the gas assembly, the motor remains on to rapidly remove the overheating condition before the clothes gets damaged and that is why the fuse does not kill the motor. In electric dryers the same fuse is tired into the door switch and when it blows it is as if you opened the door.


  • Dan Webster
    Dan Webster Feb 03, 2010

    I have repair pictures HERE

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1 Answer

Gas dryer runs but no heat. Took it apart cleaned all ducts and lots of years worth of dirt out of entire machine, looks brand new. Tested all components.


You did quite a bit of work. One other thing that controls the ignitor is called the flame detector. Its the black box looking thing mounted on the side of the big pipe the flame shoots into. Should be 2 wires going to it. A quick test to see if the ignitor comes on is to tie the 2 wires together. If you see the ignitor come on thats the bad part,

Jun 29, 2015 | Dryers

1 Answer

Dryer does not heat up model mdg508daww tested ignitor,radiant flame sensor,thermal fuse and tried limit fuse and cycling fuse checked blower wheel and made sure there was no air flow restrictions and...


Hello,

A few other things that could make the dryer not heat are,

Heat selector switch on the control panel

Timer

Motor


A quick question though...i see where ya tested the ignitor but what i would like to know is does it glow or not

To test the heat selector switch ya need to use a multimeter set to measure ohms of resistiance and test the following to have Zero ohms resistiance when set to high heat setting

Red wire to blue wire terminal (wire must be removed)
Red wire to yellow wire temninal

The heat circuit on the timer is
Yellow wire terminal on the timer to the red wire terminal...on that too the wires need to be removed off of the timer

On the motor the heat circuit on the motor switch is the yellow/black wire to the black wire to determine if its good the igniter can be checked for POWER (120 volts) since the motor only sends power to the ignitor when the dryer is running because itsa built in safety feature that will prevent the dryer from heating when not running


Good luck,
GENE

Oct 03, 2011 | Dryers

1 Answer

LG DYER MODEL DLG5966W RUNS BUT DOES NOT HEAT, TOOK THE IGNITER IN TO PARTS STORE THEY CHECKED THE CONDUCTIVITY WITH A METER AND SAID THE IGNITER IS FINE? WHAT ELSE COULD IT BE?


Continuity is great but did they perform an ampere test on the ignitor while the ignitor was hooked up inside the unit? An ignitor typically draws between 3 and 3.3 amperes any less then this would constitute a weak ignitor and the ignitor should be replaced if it is weak because it takes much longer to ignite the gas inside a dryer. An ignitor would always show conductivity except if the element were broken. So to start with wrong test was performed. Secondly there are also run thermistors and hi and low limit thermistors that act as relays that can also be checked in dryers by performing continuity tests on these thermistors click this link http://c.searspartsdirect.com/lis_png/PLDM/K0810208-00003.png this is one of the schematics to your dryer k 550 is a thermistor and k 560 is a thermostat both should be tested as mentioned above. M 110 is the gas vavle which on other units the coil is replaceable but is only sold along with the valve on an LG which also has to be tested that power is going to the solenoid on top of the valve and that it is going to the ignitor. If you have any further questions message me back. I await your reply as to any further questions as well as your finds as well. Thanks again
Rick

Sep 20, 2011 | LG D5966 Gas Dryer

1 Answer

Amana gas dyer wont turn model #lga30aw


Hi.

If the machine stays completely off, does not ignite, does not spark, does not turn, and does not show any sign of power, check the power outlet, and the power cord.

If the machine starts, ignites, but the drum does not turn, then the following parts must be tested:


PS2166310 Motor Switch Kit (part 3 diag 2 )

PS2021298 Motor Assembly (part 5 diag 2 )

PS2046298 TIMER, 4 CYCLE (part 5 Diag 1)

If the Dryer does not ignite or does not heat test the following:

If it does not ignite:

PS2039618 BURNER IGNITOR ASSY (part 7 - diag 4)

PS383994 Two Terminal Gas Valve Coil (p.8 -d.4)

PS383993 Secondary Coil Valve (p.12 d.4)

PS2046673 VALVE,ELBOW SHUT-OFF (p.14 - d.4)

PS2039380 Gas Valve Wire Harness

PS2201082 Limit Thermostat (part 7 - Diag 3)

If it turn but does not heath check also fan assembly and PS2046273 Cycling Thermostat (part 27 - Diag 2)




Here the diagrams

1
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2
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3
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4
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Mar 13, 2010 | Amana Dryers

1 Answer

My dryer will not heat. Unit is gas, and the ignitor is brand new. It does not glow at all. I put the new ignitor in as it is a normal part that goes in a gas dryer over time. I inspected the old ignitor,...


Check the safety thermal on the blower housing. A white plastic piece with 2 wires going to it. Easy way to check is to jump the wires out and start dryer. Make sure when you jump it tho it does not touch any metal and the unit is unplugged. Hope this helps.

Feb 24, 2010 | Whirlpool GGW9250PL Gas Dryer

1 Answer

Drum turns but does not heat the air. I replaced the ignitor, but no help there. Whirlpool gas dryer model 63003W0


If the ignitor glows but does not light the burner you need to replace the gas valve coils.
If there is no glow you must check all the thermostat safeties and thermal cutout fuses for continuity with a ohm meter. No continuity is a bad component. Remove at least one wire from each component before testing.
Unplug the dryer before any test.

Feb 17, 2010 | Whirlpool Dryers

1 Answer

I have a kenmore 400 series dryer model no heat


Srart by pulling each thermostat wires and tape them together until you find the bad one. You should have 3 of them to test.

Oct 25, 2009 | Kenmore Dryers

1 Answer

Dryer spins, but no heat is generated. The dryer model number is 110.76662500


Hello,
This could be one of the following:

* Defective ignitor. Suspected when ignitor fails to glow at all. Confirm by testing for 120v at the ignitor terminals. If present, ignitor is bad. Otherwise, suspect the flame sensor.

* Failed gas valve or holding valve coil. Run ohms check on each valve. May also need to actuate each valve with a test cord since that may only fail after being actuated a couple of times.

* One of the thermostats are open. Run continuity check.

* Bad flame sensor. If flame fails to ignite at all and the ignitor does is not getting 120v, suspect the flame sensor.

If you are not comfortable performing these checks, call in a repair person to check these components.
Hope this helps.

Sep 08, 2009 | Kenmore Dryers

2 Answers

Gas dryer runs but no fame to heat it up


You have a bad thermo switch, unplug, open back of dryer, switches are quarter size round and two wires hooked to them, also on is thin and 2" long sually white with two wires ooked to it. Check these with a tester, just like you test a fuse, from one side to the other. When you find the bad one, jump from one side to the other, plug dryer in and see if it works, it will if switch is bad. Then replace bad one. Do not leave jumped, if dryer overheats it will not shut off and could cause a fire. Jumping is just for test only.

Jul 17, 2009 | Dryers

2 Answers

Heat is erratic


If you already tested the element, then test and eventually replace the following parts:

PS334206
Heating Element Connection Wire part 19 in diag (can be tested using multimeter, check for lose connection or broken wire).

PS347661 Lint Filter , Replace it.

PS383953 and _.gif PS987929 blower assembly (check for obstruction because of lint, and that wheel is working) part 10 and 11 on diag.


PS344510 Cycling Thermostat (can be tested using multimeter), part 8

PS351925 High Limit Thermostat (can be tested using multimeter)- part 15 in diag.

Refer to diagram below to locate parts:

7e287dd.gif

Good luck and thanks for asking us.

G.

May 13, 2009 | Maytag PYE2300AY Electric Dryer

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