Vaillant Fan Extractor VMW ES 24 282 5 R1 Fime L25R7544 Ref. 0020073798
If your boiler does not ignite or gets blocked due to a flue gas evacuation failure, the Vaillant Extractor VMW ES 24 282 5 R1 Fime L25R7544 fan is the solution you need. This extractor is responsible for evacuating combustion gases and creating the necessary draft for the boiler to start. When it fails, you may notice symptoms such as fault code F.32: Fault: fan, F.33: Air pressure switch error (does not switch), or F.37: Divergence in the number of revolutions during operation. It is compatible with various Vaillant boilers from the VMW and VM ranges, among others. A technician must confirm through diagnosis whether it is necessary to replace it when faults occur or it stops functioning correctly.
- Type of part
- Extractor fans
- Status
- Refurbished
- Catalogue reference
- 0020073798
- Warranty
- 1 year
Vaillant boilers compatible with reference 0020073798
Extractor with reference 0020073798. 25 verified compatibilities: VMW 242-3 and VMW 242-5.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Vaillant VMW 242-3 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 242-5 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 242/2-3 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 242/2-3 R1 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 242/2-5 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 242/2-5 R1 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 24/282-5 R1 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 282-5 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 282/2-5 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 282/2-5 R1 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 28/362-5 | VMW (sealed combi) | Contrasted |
| Vaillant VMW 28/362-5 R3 | VMW (sealed combi) | Contrasted |
| Vaillant VM 202-5 | VM (sealed heating only) | Contrasted |
| Vaillant VM 202/2-5 | VM (sealed heating only) | Contrasted |
| Vaillant VM 202/2-5 R1 | VM (sealed heating only) | Contrasted |
| Vaillant VM 242-5 | VM (sealed heating only) | Contrasted |
| Vaillant VM 242/2-5 | VM (sealed heating only) | Contrasted |
| Vaillant VM 242/2-5 R1 | VM (sealed heating only) | Contrasted |
| Vaillant VM 282-5 | VM (sealed heating only) | Contrasted |
| Vaillant VM 282/2-5 | VM (sealed heating only) | Contrasted |
| Vaillant VM 282/2-5 R1 | VM (sealed heating only) | Contrasted |
| Vaillant VMI 282-7 | VMI | Contrasted |
| Vaillant THERMOCOMPACT 615E | Commercial range (Turbomax/Thermocompact) | Contrasted |
| Vaillant TURBOMAX PLUS 824E | Commercial range (Turbomax/Thermocompact) | Contrasted |
| Vaillant TURBOMAX PRO | Commercial range (Turbomax/Thermocompact) | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if the reference 0020073798 is the part for your boiler.
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 0020073798. If it is not visible, do not identify the part by its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms that require diagnosis in the extractor 0020073798
The extractor evacuates the combustion gases with forced draft. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler tries to ignite, the fan starts and stops in a lockout after a few seconds.
Cause: If the extractor does not reach the necessary revolutions, the air pressure switch does not close the contact and the control board cuts off the ignition for safety.
Before changing the extractor, check that the exhaust pipe to the outside is not bent, blocked, or frozen at the outlet.
- 02
A new buzzing or vibrating noise is heard when starting that wasn't there before.
Cause: The motor bearing is worn out and the rotor rubs or vibrates while rotating.
With the boiler unplugged, turn the rotor by hand and check if it is difficult to turn or if it makes a friction sound; if it turns freely, the noise may be coming from another part.
- 03
The extractor does not start: it does not spin and there is no sound.
Cause: The motor may be seized or have damaged windings, which is common after years of humidity and soot on the shaft.
Check with a multimeter that power is reaching the connector of the fan before declaring it faulty; sometimes a fuse or the pressure switch itself blows.
- 04
The boiler stops by itself halfway through a cycle and shows a fault related to flue gas evacuation.
Cause: If the extractor loses revolutions while running, the pressure switch detects the drop in pressure and cuts off the gas supply.
Check for any accumulated condensation or dirt in the extractor's spiral and in the siphon before replacing the part.
Vaillant fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| F.32 | Fault: fan. | The extractor/fan does not start or its revolution signal (Hall) is not valid, causing the electronics to lock the unit. Check the fan's power supply and connector, free rotation, and motor signal/tachometer according to the manufacturer's diagnosis. |
| F.33 | Air pressure switch fault (does not switch). | If the fan does not start or does not generate sufficient depression in the venturi, the pressure switch does not close and the boiler enters F.33. Check the fan start and flow, depression in the pressure switch tubes, and continuity/switching of the pressure switch itself. |
| F.37 | Divergence of the number of revolutions during operation. | During the service, the electronics detect that the fan's rpm are out of tolerance (too high or low), typical of a fatigued motor, bearings/dirt, or control fault. Verify the actual fan rpm through diagnostics, free rotation, power supply, and tachometer/Hall signal. |
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Data sheet for the Vaillant extractor 0020073798
- Catalogue reference
- 0020073798
- Uniclima internal SKU
- ECVR1
- Brand
- Vaillant
- Type of part
- Extractor fans
- Units in stock
- 3 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Vaillant VMW 242/2-3 Manual (PDF) Document © Vaillant, provided as a technical reference.
Frequently asked questions about the extractor 0020073798
Is this extractor Ref. 0020073798 compatible with a Vaillant VMW 242-5?
Does this part also cover a Vaillant VM 282/2-5 R1?
Why is the extractor of a Vaillant VM or VMW from this series failing?
Spare parts related to Vaillant VMW (sealed mixed)
