A Whirlpool Dryer That Would Not Start on a Bad Door Switch in Pasadena
A Pasadena homeowner called A+ Appliance Repair and Maintenance about a Whirlpool dryer (model WGD5010LW3) that would not start, suspecting a broken door sensor. They were right. A dryer will not run unless its door switch confirms the door is closed, a basic safety feature, so when that switch fails, the dryer stays dead even though nothing else is wrong. Our technician replaced the dryer door switch, and the dryer started and ran normally again. It is a common and inexpensive repair, and a good example of a small safety component stopping the whole machine when it fails.
A Whirlpool Dryer That Would Not Start in Pasadena
A homeowner in Pasadena called A+ Appliance Repair and Maintenance about a Whirlpool dryer, model WGD5010LW3, that would not start. They had a good hunch about the cause: they suspected a broken door sensor. That instinct turned out to be correct, and it points at one of the more common and easily overlooked reasons a dryer will not run.
Why a dryer will not start with a bad door switch
Every dryer has a door switch, and it exists for a simple safety reason: the dryer should not tumble and heat with the door open. So the machine is designed not to start, or to stop, unless the door switch confirms the door is properly closed. When you shut the door, the switch registers it, and only then will the dryer run.
That safety feature means the door switch sits directly in the path of the dryer starting at all. When the switch fails, the dryer no longer gets confirmation that the door is closed, even when it is, so it refuses to start. From the outside, the dryer just seems dead when you press start, with no obvious reason. But the machine is doing exactly what it is designed to do: without a working door switch telling it the door is safely closed, it will not run. A failed door switch is a genuinely common cause of a dryer that will not start, and it is easy to miss because the switch is a small, hidden component.
The customer's hunch was right
The homeowner suspected a broken door sensor, and that kind of observation is genuinely helpful. A dryer that has power, responds to controls, but simply will not start when you press the button, especially with no other symptoms, is a classic door-switch signature. Our technician confirmed the door switch was the failure, validating the customer's suspicion and pointing the repair straight at the right part.
The repair
We replaced the dryer door switch. With the new switch installed, the dryer once again received confirmation that the door was closed when it was, and it started and ran normally. Our technician confirmed the dryer started reliably and ran a normal cycle, verifying the repair rather than just installing the part. On a will-not-start complaint, confirming the machine actually starts and runs is the measure of a completed repair.
Why it is a repair worth making
A door switch is an inexpensive part, and replacing it is a straightforward repair, which makes this a very satisfying fix: a dryer that seemed dead is brought fully back to life by addressing one small, failed safety component. There is no sense in replacing a dryer, or living without one, over a part like this. It is also worth appreciating that the switch is a safety feature working as intended; a dryer that will not run without confirming its door is closed is behaving exactly the way it should, and replacing the failed switch restores both the function and that safety behavior.
What to check if your dryer will not start
If your dryer will not start, a few observations help. Make sure the door is fully closed and latching; sometimes the door simply is not shutting all the way, or the latch or strike is worn. Notice whether the dryer has power and responds to its controls but just will not start when you press the button, which points toward the door switch or start circuit rather than a power problem. And if the door seems to close fine but the dryer still will not run, the door switch is a prime and common suspect worth having checked.
About A+ Appliance Repair and Maintenance
We service Whirlpool, Maytag, LG, Samsung, GE, Kenmore, and every other major dryer brand throughout Pasadena and the surrounding San Gabriel Valley. Our technicians are certified and carry common parts, so a door-switch repair like this one can usually be diagnosed and completed in a single visit.
We quote the price upfront before any work begins, we waive the service call fee when you move forward with the repair, and every completed repair is backed by our full repair warranty. If your dryer will not start, we can find out why, whether it is the door switch or something else, and get it running again.




