Model #LGQ9858PW0 WHIRLPOOL Residential Dryer

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Question and Answers

Q:

My whirlpool gas dryer wouldn't heat at all. M# LGQ9858PW0. I have chaged the thermostat and now it heats occasionally but randomly. Please help.

A:

I'm sorry about the difficulties that you are experiencing with your Whirlpool dryer. I did some research at managemylife.com and found an expert answer to a similar question that may assist you until your expert can respond. I have attached the link below. If you would like to schedule service and have a qualified technician help you, I have also attached a link to searshomeservices.com. I hope these links will help until your expert can respond.

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James -
February 25, 2011
A:

I have already replaced the thermostat and that only partially helped. It wasn't heating at all prior to the thermostat replacement and now it heats occassionally but at random times.

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Cory -
February 25, 2011
A:

Thank you for your question and I understand your concern.

Based on your symptom and details the gas valve solenoids are likely becoming weak and unable to open the gas valve at times. Remove the small square inspection cover located below the door and then start the dryer and look through the inspection hole for a red glow. You should see the burner ignite each time the glow bar igniter glows bright red. You may find it igniting the burner the first 2-3 times it calls for heat but continue monitoring the burner operation. You may want to pull up a chair and sit there and monitor the operation until you find the igniter glowing red and then fading off without burner ignition. If and when you find it glowing red and then fading off without any burner ignition, this would indicate weak gas solenoid coils and both solenoid coils will need to be removed and replaced.

I added a couple of images below with the instruction on how to remove the front panel and replace the coils.

The solenoid coil kit is part #279834 which can be ordered and shipped to you from Sears PartsDirect

If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website: Sears Home Services .

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Joey S -
Sears Technician
February 26, 2011
A:

I have followed your advice and look through the observation hole. Only to find that everytime it glows bright red i have fire. The problem is that it doesn't glow bright red everytime or even enough to prodvide steady heat. What now? I assume the ignitor is bad. Thanks.

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Cory -
March 05, 2011
A:

The red glow of the igniter is not what produces the heat, the burner flame provides the heat. The igniter either glows or it doesn't. It would be very unusual for the glow bar igniter to glow inconsistently. If you find the glow bar igniter glowing red and then fading off without any burner ignition, replace the solenoid coils that are located on top of the gas valve assembly.

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Joey S -
Sears Technician
March 08, 2011
A:

It doesn't fade off without ignition. It may ignite and then fade off but most often it doesn't glow to ignite. What do i do?

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Cory -
March 09, 2011
A:

Cory: Based on your symptom and details the igniter is not coming on because one the components in the heating circuit are open and not closing. The high limit thermostat could be opening due to the lack of air flow meaning you could have a venting restriction which will cause the high limit thermostat to open and it's not going to reset and close until it cools down. For testing purposes only, disconnect the vent hose from the back of the dryer and then see how it operates. You should measure approximately 140-150 degree air blowing out of the exhaust. The temperature can drop 10-15 degrees before the igniter will cycle back on. If removing the vent hose does not make any difference then you will need to check each thermostat for continuity once the flame shuts off to see which one is remaining closed to long. Be sure to disconnect the power cord from the power source before disconnecting the wires from the thermostat before checking the thermostat for continuity. The high limit thermostat is key#15. The flame sensor on the side of the burner must also be closed/have continuity in order to complete the circuit to the igniter too. I added a wiring diagram so that you can see all the components in the heat circuit that must be closed in order to complete the path of voltage to the igniter.

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Joey S -
Sears Technician
March 10, 2011
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