Model #LGR8857EQ2 WHIRLPOOL Residential Dryer

  • Top And Console
    3 Results
  • Cabinet
    3 Results
  • Bulkhead
    3 Results
  • 3402844 Burner Assembly
    3 Results
  • 3402844 Burner Assembly
    3 Results
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Question and Answers


Why does my Whirlpool gas dryer model 3406071A run but does not heat?


The model number that you submitted is actually a part number for the owner's manual on your dryer. I cross referenced the owner's manual to the Whirlpool dryers that use that manual. This answer is based on a typical model (LGR8857EQ2) that uses that manual. About 30 different gas models use that owner's manual but they are relatively similar. This information should work for your dryer. If not, resubmit your question with the full Whirlpool model number of your dryer and additional details.

Here are some troubleshooting tips for this problem:

  • Make sure that the gas supply cut-off valve is fully open and that the dryer has an adequate gas supply provided to it.
  • There is an observation plug in the front panel of the dryer on the left side below the dryer door. Pull this plug and then start a medium load of wet laundry on high heat. Observe the gas valve assembly through the observation hole. The theory of operation for this system is shown in the first image below. If the igniter will not even glow then I recommend checking the thermal fuse in the back of the dryer first. The second image below shows the wiring diagram for your dryer and it also shows the location of the thermal fuse. Unplug the dryer and shut off the gas supply. Remove the back panel of the dryer to access the thermal fuse. Remove one wire (with the dryer still unplugged) and check the continuity of the thermal fuse using a volt/ohm meter. You should measure near zero ohms of resistance (continuity) through the fuse if it is okay. If it is open (measures infinite resistance) then it is blown and will need to be replaced. If the fuse is blown, you can conduct a short test to verify that it is the only component that is preventing the dryer from heating. Connect the two wires that go to the thermal fuse together (with the dryer still unplugged) and tape them with electrical tape. Reassemble and test the dryer to see if the burner will ignite. If it does then replacing the thermal fuse will fix this heating problem. NOTE: Do not continue to run the dryer with this fuse bypassed. It is an important safety feature of the dryer that must be replaced. Also, check the exhaust vent system of the dryer for a clog or restriction that likely caused the thermal fuse to blow. Check the lint screen and the exhaust vent duct system all of the way to the outside of your home. Failure to resolve a restricted exhaust vent system could cause the thermal fuse to blow again shortly after it is replaced. You can order part from the Sears PartsDirect website. Use the full model number of your Whirlpool dryer to order the correct parts.
  • If the thermal fuse is okay, you could have a failed operating thermostat, an open flame sensor, a bad timer contact, a failed igniter or a wiring failure in the heating circuit.
  • If the gas valve assembly ignites initially but will not ignite on subsequent attempts, then you likely have weak gas valve coils in the dryer. Weak coils may be strong enough to open the gas valves for the first ignition when they are cold but they may not be able to continue opening the gas valves on subsequent attempts after they are heated up. You can order a kit that will replace both coils for a less expensive price than buying both coils separately. The part number for the kit is 279834. The basic procedure for opening the cabinet to access the gas valve assembly is shown in the third image below.
  • If the igniter glows and then cycles off but the burner does not ignite, then you could also have the failed gas valve coils described above.

These tips may help you diagnose and repair the heating failure in your gas dryer. If you need more help, resubmit your question with additional details and the full model number of your Whirlpool dryer.

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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Lyle W -
Sears Technician
January 18, 2010

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