Get Answers to your Appliance Repair Questions

Washer Parts  ·   Dryer Parts  ·   Refrigerator Parts  ·   Dishwasher Parts  ·   Range/Cooktop/Oven Parts  ·   AppliancePartsPros 

Author Topic: Gas heater sometimes doesn't come on, and doesn't stay on when it does  (Read 2411 times)

Offline jemenake

  • VIP Member
  • Member Since: Jul 2008
  • Posts: 4

A few days ago, I started getting a problem with my LG dryer. The gas heater doesn't fire.

If I run the dryer with the front removed, I can see the igniter start glowing to try to ignite the gas, but there's no gas. I've checked the voltages to both valves in the gas valve assembly, and they both seem to be over 90VDC, like the service manual says (although one of them, I tested it without it hooked to the valve, so I don't know what the voltage would be under a load). But the voltages all seem to happen as the service manual suggests: valve 1 gets voltage, the igniter starts glowing, valve 2 gets voltage, nothing lights, and then the igniter shuts off.

What's a little strange is that, about 10-20% of the time, the heater will fire up. So, I thought maybe it was a sticky valve. However, what's really strange is that, of the times it fires up, the heater then shuts off sometime later. Maybe it's not all that strange; I had assumed that the heater would stay on the whole time of the drying cycle, but maybe it is supposed to turn on/off as needed to maintain a certain temperature and, when it tries to turn back on later, it just fails like it does 80-90% of the time.

Has anybody seen anything like this?

Model DLG2532W

Offline JWWebster

  • Technician
  • Member Since: Jan 2008
  • Posts: 8804
  • Country: us
  • SublimeMasterJW
    • Buy me a beer through paypal
    • JW's Sublime Appliance Advice
Gas dryers only burn for moments before temps inside the dryer are reached. Therefore the gas assembly is cycling anytime the temp drops below 105f and above 160f.
The valve resistance is 1995 ohms and the ignitor is 185.
May the hinges of our friendship
        never grow rusty.

About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack. The small green square=personal message. The green dot is a link to my web page on appliance repair and other general BS I love to post. The letter sends me email.
I love fan letters! LOL

Offline tgoods

  • Technician
  • Member Since: Jul 2010
  • Posts: 1824
  • Country: us
    • Buy me a beer through paypal
Sounds like bad gas valve coils to me.  LG doesn't sell the coils, you have to buy the whole assembly, part number 5221EL2002A.


gas dryer fires during the drying cycle but doesn't stay on

Started by rscheer72

Replies: 2
Views: 1818
Last post August 07, 2012, 10:58:16 AM
by rscheer72
IA84600 Inglis dryer doesn't heat

Started by RickT

Replies: 5
Views: 12038
Last post January 16, 2008, 04:02:42 PM
by JWWebster
dryer doesn't seem to get hot enough

Started by woods witch

Replies: 5
Views: 7924
Last post October 25, 2008, 08:29:09 PM
by JWWebster
Whirlpool Electric Dryer - doesn't get very warm

Started by GoldieGirl

Replies: 8
Views: 6059
Last post June 20, 2009, 01:47:42 PM
by JWWebster
Dryer pye3300ayw doesn't run

Started by 66ford

Replies: 9
Views: 6124
Last post August 31, 2009, 10:32:24 PM
by JWWebster
Kenmore Dryer Doesn't Heat UP

Started by KnarfOH

Replies: 2
Views: 5060
Last post January 12, 2010, 09:04:14 AM
by JWWebster