Water Pressure Sensor Vaillant Eco Tec Plus VMW ES 306 5 5 Ref. 0020059717
The water pressure sensor Vaillant Eco Tec Plus VMW ES 306 5 5, with reference 0020059717, is a sensor that measures the pressure of the heating circuit and sends the information to the control board. When this part fails, you may notice issues such as too low pressure (F.22) or incorrect pressure readings (F.73 and F.74), which can affect the performance of your boiler. This sensor is compatible with several models from the Vaillant ecoTEC Plus range, such as the VMW 236/5-3 and the VMW 306/5-5, among others. It is advisable to replace it if you experience the mentioned symptoms or if the sensor does not respond properly.
VAT included
Consult via WhatsAppVaillant boilers compatible with reference 0020059717
Pressure sensor with reference 0020059717. 17 verified compatibilities: VMW 236/5-3 and VMW 240/3-3 M.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Vaillant VMW 236/5-3 | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VMW 240/3-3 M | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VMW 242/3-3 M | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VMW 242/3-5 M | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VMW 280/3-5 | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VMW 286/5-3 | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VMW 306/5-5 | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VM 240/3-5 | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VM 280/3-5 | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VM 306/5-5 | Vaillant ecoTEC Plus (VMW / VM) | Contrasted |
| Vaillant VC 146/4-7 | Vaillant ecoTEC / VC (heating only) | Contrasted |
| Vaillant VC 206/4-7 | Vaillant ecoTEC / VC (heating only) | Contrasted |
| Vaillant VC 276/4-7 | Vaillant ecoTEC / VC (heating only) | Contrasted |
| Vaillant VKK 806/3-E | Vaillant ecoVIT / VKK (floor-standing, condensing) | Contrasted |
| Vaillant VKO 156/3-7 | Vaillant ecoVIT / VKK (floor-standing, condensing) | Contrasted |
| Vaillant VKO 256/3-7 | Vaillant ecoVIT / VKK (floor-standing, condensing) | Contrasted |
| Vaillant VKO 356/3-7 | Vaillant ecoVIT / VKK (floor-standing, condensing) | 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 ref. 0020059717 is the part for your boiler
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 0020059717. If it is not visible, do not identify the part from 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 and faults that the pressure switch 0020059717 resolves.
The pressure sensor measures the water pressure for the electronics. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler locks out with a fault or low water pressure warning, even though the circuit has normal pressure.
Cause: The sensor sends an incorrect signal to the PCB regarding the actual pressure of the circuit.
Fill the circuit to the usual cold pressure and observe if the warning disappears temporarily and then reappears; this indicates that the problem may be with the sensor and not with a real leak.
- 02
The pressure indicator on the display remains fixed when filling the circuit, it doesn't move.
Cause: The sensor has stopped transmitting pressure changes to the PCB, either due to breakage or internal wear.
Fill slowly and check if the number changes even a little; if it doesn't move, it means that the signal is not reaching the PCB.
- 03
The boiler goes from working well to locking out due to pressure from one day to the next, without visible leaks.
Cause: A sensor that starts to fail may give erratic readings intermittently before completely stopping functioning.
Monitor the pressure on the manometer for a couple of days before replacing the part, to rule out the possibility of a slow leak.
Fault codes from Vaillant that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.73 | Water pressure sensor signal out of range (too low). | The sensor 0020059717 may be faulty or shorted to ground, delivering a low signal; check 5/24 V and sensor wiring and compare the actual pressure (manometer) with the display reading. |
| F.74 | Water pressure sensor signal out of range (too high). | Internal fault of the sensor 0020059717 or cable short to 5/24 V causes high signal; check the harness to the sensor for shorts and measure the sensor's power supply/signal. |
| F.75 | The pressure change is too low when starting the heating pump. | If the sensor 0020059717 does not detect a pressure increase when the pump starts, the boiler locks out due to lack of water; check that the pressure reading changes at the pump start and compare with the pressure gauge. |
| F.22 | Installation pressure too low. | A faulty sensor 0020059717 may report low pressure even if it is correct; verify the actual pressure with a manometer against that shown by the boiler and check the power supply/wiring of the sensor. |
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.
Vaillant 0020059717 Pressure Sensor Datasheet
- Catalogue reference
- 0020059717
- Brand
- Vaillant
- Type of part
- Pressure sensors
- Units in stock
- 3 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Frequently asked questions about the pressure sensor 0020059717
Does this pressure sensor work for the Vaillant ecoTEC Plus VMW 306/5-5?
Is this sensor compatible with the Vaillant ecoTEC VMW 240/3-3 M?
What fault codes can this sensor resolve?
How many models are compatible with the water pressure sensor Vaillant Eco Tec Plus?
How can I identify this pressure sensor if there is confusion with other models?
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