Water Pressure Sensor Vaillant ecoTEC / ecoCRAFT - Ref. 0020059717
If you notice incorrect pressure readings on your Vaillant ecoTEC / ecoCRAFT boiler, the Water Pressure Sensor may be the solution. This sensor measures the circuit pressure and sends the information to the control board. When it fails, you may experience lockouts, as well as fault codes F.22 (installation pressure too low), F.73 (signal too low), F.74 (signal too high), and F.75 (pressure change too low when starting the pump). It is installed in various boilers, such as the ecoTEC Plus and models from the ecoTEC / VC and ecoVIT / VKK ranges, among others. It is recommended to replace it when these symptoms or pressure issues occur.
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 shows a low pressure error even though you just filled the circuit and bled the radiators.
Cause: The sensor does not correctly transmit the actual circuit pressure to the control board.
If the boiler has a physical pressure gauge, compare it with what the display shows; if they don't match, the problem is with the sensor or its wiring.
- 02
The pump stops or fails to start, and the boiler does not heat.
Cause: The PCB does not start the pump if it does not receive confirmation of sufficient pressure from the sensor.
Check the wiring and connector of the sensor to ensure it is neither loose nor corroded before replacing it.
- 03
What the boiler display shows does not match what you see on the installation's pressure gauge.
Cause: A faulty sensor gives a reading different from the actual pressure of the circuit.
Record both readings with the boiler cold and at rest to confirm the difference before ordering the part.
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
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- Part code
- 0020059717
- Batch code/date
- 2066.2101
