We will talk about most popular dryers, made by Whirlpool (it also could be sold under “Kenmore” name with the 110 prefix in model number). Assuming the gas is connected to your dryer and the gas shut off valve is open (do not laugh, I’ve seen it many times), it consists of only four parts which can make your dryer stay cold. These parts are: igniter, radiant flame sensor, thermal fuse and set of coils for the gas valve. Also, because you are going to take your dryer apart, it is a good time to clean it from lint built up inside. Such cleaning has to be done at least every other year. You would not believe how many dryers I’ve seen catch on fire.
All these dryers could be divided it two major groups (difference is location of the parts we are talking about).Group A: the lint screen is located at the right rear corner on the top panel.Group B: the lint screen is located inside the door frame. Tools needed: 1/4” and 5/16” nut driver or socket wrench, putty knife, Philips #1 screwdriver, continuity meter
ALWAYS UNPLUG THE POWER CORD before attempt any repairs!
Let’s start with group A:
Step 1. How to find, test and/or replace the thermal fuse:
a). Pull out the dryer and squeeze behind.
b). Disconnect the vent hose from the dryer, unscrew and remove the back panel.
c). Locate the fuse on the blower housing.
d). Remove the wires from the thermal fuse and check for continuity across the terminals. Replace the fuse if there is no continuity. The part number for the most common Whirlpool fuse is 3392519.
According to the manufacturer instructions if the thermal fuse is open, you have to replace the operational thermostat together with the thermal fuse. The operational (or the cycling) thermostat is located next to the thermal fuse and it is not an universal part. It has to be ordered by the model number. To get the right replacement part just click on the link AppliancePartsPros, then type the model number of your dryer (it is located on the door frame) in the search box, click on the “search” button and in the new window type the word ”thermostat” in the “search by keyword” box and click the “search” button.
e). If there is continuity, then go to Step 2.
Step 2. How to find, test and/or replace the igniter, the radiant flame sensor and/or the coils for the gas valve:
a). Remove the lint screen and the two screws next to it.
b). If there is a kick panel on the bottom, remove it using a putty knife.
c). Using a putty knife, unlatch the top panel from the front on both sides and lift it up.
d). Unplug the wires for the door switch and remove the two door springs. Then unscrew the four screws (two screws if it is no a kick panel) and remove the front panel.
e). Remove the belt from the idler pulley (which is located under the drum) and pull out the drum together with the belt.
On the left side you will see the burner assembly, which includes all the parts we are talking about. Unplug the wires to the igniter and check for continuity. Replace the igniter if there is no continuity. The part number for the Whirlpool igniter is 279311.
You can also use the igniter made by Maytag. The Maytag part number is 304970. They are absolutely the same, but Maytag sells them for a lot less.
The radiant flame sensor is located on the left side of the burner tube. Remove the two wires from the sensor and check for continuity across the terminals. Replace the radiant flame sensor if there is no continuity. The part number for the Whirlpool radiant flame sensor is 338906.
If your dryer does not heat intermittently forget all the parts we were talking before. The problem is bad gas valve coils located on the top of the gas valve . Unscrew the two screws holding the coil bracket and replace the coils. The part number for the Whirlpool gas valve coils is 279834.
Look for Group B in the next post.