17438000001584 Genuine OEM Midea Dryer Belt Safety Switch
The 17438000001584 is a Genuine OEM Midea replacement belt safety switch compatible with select Midea, Criterion, and Insignia electric and gas dryers. This safety switch is positioned near the drive belt and tensioner pulley assembly, where it monitors belt-related conditions and interrupts electrical flow to the motor or heating circuit if a fault or unsafe condition is detected — such as a broken or severely slipped drive belt. This is a key safety mechanism: if the belt fails and the drum can no longer be safely driven, this switch helps prevent the motor from continuing to run unsafely or the heater from continuing to operate without normal airflow from drum rotation.
When this switch fails, the dryer may not start, may shut off unexpectedly during operation, or may fail to heat even though other components test correctly. As a Genuine OEM part manufactured by Midea to factory specifications, the 17438000001584 measures 2"L x 2"W x 3"H and weighs approximately 1 oz. It is found on the same parts diagram as the drive belt, tensioner pulley assembly, and drum support components on compatible models. Installs in 30–45 minutes with basic hand tools.
Quick Answer
The 17438000001584 Genuine OEM Midea Dryer Belt Safety Switch fixes Midea, Criterion, and Insignia dryers that won't start, shut off unexpectedly during operation, or fail to heat despite other components testing normally. Mounted near the drive belt and tensioner pulley assembly — interrupts power if a fault or unsafe belt condition is detected. Dimensions: 2"L x 2"W x 3"H, approx. 1 oz. Genuine OEM. Compatible with Midea MLG45N3BMG, Criterion CDG41N1AW, CDG45N1AW, and related Midea-platform dryer models.
Common Problems This Part Fixes
- Dryer not starting — safety switch not signaling normal belt/drive conditions
- Dryer shutting off unexpectedly partway through a cycle
- Dryer not heating despite the heating element, thermostat, and other components testing normal
- Dryer behaving erratically after a drive belt failure or replacement
- Intermittent power interruption during operation traced to this switch area
- Switch contacts failing continuity test with a multimeter
Replaces Part Numbers
This belt safety switch directly replaces the following part number:
17438000001584, AP7157511, PS18188483
This is the Midea manufacturer part number used across multiple Midea, Criterion, and Insignia dryer models. Contact our support team with your model number if you need confirmation before ordering.
Compatibility
This belt safety switch is compatible with select Midea, Criterion, and Insignia dryers, including:
- Midea MLG45N3BMG gas dryer
- Midea MLG45N1BWW, MLG45N3BWW, and related MLG gas dryer series
- Midea MLE series electric dryers (select models)
- Criterion CDG41N1AW, CDG45N1AW gas dryers (air vent series)
- Insignia electric and gas dryers built on the Midea platform (select models)
Always verify your appliance model number before ordering. Contact our support team if you're unsure.
Key Features
- Genuine OEM part manufactured by Midea to factory specifications — guaranteed fit and performance
- Safety switch mounted near the drive belt and tensioner pulley assembly
- Interrupts electrical flow to the motor or heating circuit if a fault or unsafe belt-related condition is detected
- Compact design: 2"L x 2"W x 3"H, approximately 1 oz
- Compatible with Midea MLG/MLE series, Criterion CDG series, and Insignia Midea-built dryers
- Installs in 30–45 minutes with basic hand tools
Product Specifications
| Part Number |
17438000001584 |
| Part Type |
Dryer Belt Safety Switch |
| Condition |
Genuine OEM |
| Application |
Electric and Gas Dryers (Midea platform) |
| Dimensions |
2"L x 2"W x 3"H |
| Weight |
Approximately 1 oz |
| Location |
Near drive belt and tensioner pulley assembly |
| Compatible Brands |
Midea, Criterion, Insignia |
Installation Notes
⚠️ Unplug Dryer Before Starting (Shut Off Gas First on Gas Models) — Wear Work Gloves Disconnect power before beginning (and shut off the gas supply first if you have a gas dryer model). Wear work gloves — there are sharp metal edges inside the dryer cabinet. Remove the lint filter housing screws, release the top panel locking clips with a putty knife, and lift the top panel. Remove the front panel to access the drum, drive belt, and tensioner pulley assembly. Locate the belt safety switch in this area — refer to your model's parts diagram to confirm its exact mounting position, as it is positioned near the belt and tensioner pulley support. Photograph the wire connections before disconnecting. Disconnect the wires from the old switch, remove the mounting screw or clip, and pull the switch free. Install the new 17438000001584 switch in the same position, secure the mounting hardware, and reconnect the wires. While this area is open, it's a good time to inspect the drive belt and tensioner pulley for wear, since this switch is related to belt operation. Reassemble the front panel and top panel in reverse order. Restore gas and power, and run a test cycle to confirm the dryer starts and runs normally. Tools needed: Phillips screwdriver, putty knife, work gloves.
Frequently Asked Questions
What does the belt safety switch do?
The belt safety switch monitors belt-related conditions near the drive belt and tensioner pulley assembly and interrupts electrical flow to the motor or heating circuit if it detects a fault or unsafe condition — such as a broken or badly slipped drive belt. This is a protective measure: if the belt has failed and the drum can no longer be driven normally, the switch helps prevent continued unsafe operation of the motor or heater. It works alongside other safety components in the dryer (like the door/cover switch and thermal limiters) as part of an overall safety system.
My dryer just had a belt replacement and now isn't working right — could this switch be involved?
It's possible. Since this switch is positioned near the belt and tensioner pulley assembly, it can be disturbed, dislodged, or its connector improperly reseated during a belt replacement. If your dryer is behaving erratically after a recent belt repair — failing to start, shutting off, or not heating — check that this switch's connector is fully seated and that the switch itself wasn't damaged during the repair. If the connector is good and the switch tests as an open circuit with a multimeter, it has failed and needs replacement.
How do I test if this safety switch has failed?
Unplug the dryer, disconnect the switch's wire connector, and set your multimeter to continuity mode. With the belt and tensioner mechanism in their normal operating position, the switch should show closed continuity (allowing current to flow). If the switch shows an open circuit when it should be closed, it has failed and needs replacement. Always refer to your specific model's wiring diagram to confirm the expected switch state, since exact behavior can vary by dryer model.
Does this switch fit Insignia and Criterion dryers as well as Midea?
Yes — Insignia (Best Buy) and Criterion (Sears/Kmart) are house brands whose dryers in certain configurations are manufactured by Midea and use the same internal components, including this belt safety switch. Confirmed Criterion models include the CDG41N1AW and CDG45N1AW gas dryers. Always verify your specific model number before ordering to confirm compatibility.
Is this a Genuine OEM or aftermarket part?
This is a Genuine OEM part manufactured by Midea to factory specifications. It is the exact same belt safety switch installed in compatible Midea, Criterion, and Insignia dryers from the factory — guaranteed fit, materials, and performance.
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