Question about Amana ALG331RAW Gas Dryer

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Thanks for the response

Will a faulty cycle theromstate also cause the flame to ignite once and not again or do i also have a gas valve solenoid problem?

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Ok, I had to refresh my memory on exactly what information was provided to me. The link that I provided should have explained how to locate and TEST the thermostat for normal operation and to rule out any other cause. Yes, the solenoids could be at fault, but your description faults the thermostat. You can either replace all the parts concerned with the ignition process and eliminate all suspects, or you can test for the faulty component. The link I provided explains how to test and provides parts information.
You are welcome to try our premium service where more time can be spent talking you through the procedures.
Thank you,
Dave E. (Illeagle)

Posted on Jun 18, 2008

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1 Answer

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

Jul 15, 2013 | Whirlpool LGR3624JQ Gas Dryer

1 Answer

When the dryer is cold the heater flame will


The heating circuit is working perfectly except for the solenoid coils as indicated by the occasional glowing of the igniter but no gas is ignited. A gas valve closes as the solenoid coil weakens as it gets hot and does not open until it has cooled down. Replace both gas valve solenoid coils to get the dryer back into proper operation. The solenoid coils are part numbers 694539 and 694540 but also can be purchased as a kit here.

Apr 27, 2010 | KitchenAid KGYS850LT Gas Dryer

1 Answer

Dryer ignites and flame stays on for 1-2 minutes then shuts off and comes on again a few minutes later


This is most likely caused by faulty gas valve coils. The electrical coils are right above the gas valves and when energized, these solenoids open the gas valves to permit gas flow. A symptom of bad solenoids is a "cycling" condition such as you have described. It is recommended that if any solenoids are suspected of being faulty that they both (all) be replaced at the same time. They will most likely come as a set. Hope this helped and best wishes.

Oct 07, 2009 | Kenmore 63942 Dryer

1 Answer

Dyer not heating up. Igniter fires, gas and flame comes on and then turns off.


This "cycling" condition can be caused by faulty gas valve coils. These electrical coils are right above the gas valves. When energized, these solenoids open the gas valves and permit the burner to light. If faulty, they cut off the gas flow. It is recommended that if any are suspected of being faulty, that they both (all) be replaced at once. They will most likely come as a set from the parts supplier. Really sorry for your trouble and I hope this helped. Best wishes.

Sep 16, 2009 | Maytag Atlantis MDE7400AY Electric Dryer

1 Answer

My dryer is gas. The problem is that when I turn on the drier the flame ignites and after a while goes out and does not re-ignite.


This is most likely caused by faulty gas valve coils. These electrical coils are right above the gas valves and when energized, these solenoids open the gas valves and permit the burner to light. Faulty gas valve coils are a common cause of "cycling". It is recommended that if any coils are suspected of being faulty that both (all) be replaced at the same time. Hope this helped and best wishes.

Sep 05, 2009 | Dryers

1 Answer

Dryer starts, heat up than the goes out


Faulty gas valve coils are the typical cause of this type of "cycling". These electrical coils are right above the gas valves and when energized, these solenoids open the gas valves and permit the burner to light. If any gas valve coils are suspected of being faulty, it is recommended that both (all) be replaced at the same time. Hope this helped and best wishes.

Sep 02, 2009 | Dryers

1 Answer

Flame does not cycle on Gas Dryer


This problem is caused by faulty gas valve coils. These electrical coils are right above the gas valves and when energized, these solenoids open the gas valves. It is recommended that if any of the gas valve coils are suspected of fault, that they both (all) be changed at once. Hope this helped and best wishes.

Sep 01, 2009 | Kenmore 63942 Dryer

3 Answers

Glow plug lights but does not fire gas everything


This is most likely faulty gas valve coils. These electrical coils are located just above the gas valves and when energized, these solenoids open the gas valves and permit the burner to light. If faulty, the gas valves cannot open and the burner cannot light. Due to the difficulty in testing these solenoids, it is recommended that both (all) be replaced at once if any are suspected of being faulty. Hope this helped and best wishes.

Aug 08, 2009 | Dryers

1 Answer

Maytag Gas Dryer - Flame starts and then turns off 5 seconds into cycle


HI thanks for your question. the coils on the gas valve are faulty . common problem with gas dryers , replace the coils thanks the appliance doc. please rate my answer. thanks

Oct 11, 2008 | Maytag Dryers

1 Answer

Heats up and then no heat again


You need a coil kit for the gas valve they will waeken over time and not open when they are energized

Jun 18, 2008 | Amana ALG331RAW Gas Dryer

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