[zebra47cb]

How do I test the start switch on my whirlpool dryer, part number 3398095.

[denman]

Here are your parts
Replacement parts for WHIRLPOOL LEC7848DQ0 | AppliancePartsPros.com

See the attachment for the wiring diagram

As you can see from the wiring diagram it is a relay and not a switch,

So contacts R1 to R2 should be 0 ohms when it is pushed in.

If it is OK the next thing to check would be the thermal fuse (Item 7 in Section 3)
Should also be 0 ohms.
If blown (infinite ohms) be sure to check/clean your vent system before replacing as this is the most common cause of it blowing.

[123laundry]

you have to see if see if there is any current going across.

[Bartholomeu]

Which terminals are R1 and R2? Is that the Blue to Blue in the schematic, or Blue to Pink/Black? Blue to Blue I have continuity, but any blue wire to pink does not have continuity. Thanks for your help.

[denman]

I am not 100% sure but I believe Blue to Blue is R1 and R2, so you should have 0 ohms when the button is pressed. Infinite ohms when not presses.

A Blue to Pink/Black will then be the coil. Use a higher meter scale to check this (200 Kohms).