
Flow Detector Baxi Roca Victoria 20/20 F Ref. 122080480
The Roca Victoria 20/20 F Flow Detector Ref. 122080480 is a flow switch that detects the flow of water when a tap is opened and activates the ignition to produce domestic hot water. When it fails, no hot water comes out even when the tap is open, which can generate fault codes such as 50-60-70-90: Open overtemperature thermostat (with flame). This component is compatible with Baxi Roca Victoria 20/20, Victoria 20/20 F, Victoria 20/20 T, and R 20/20 CXF boilers, among others. It should be replaced when the mentioned symptoms occur and no hot water is obtained when the tap is opened.
VAT included
Consult via WhatsAppBaxi Roca boilers compatible with reference 122080480
Flow meter with reference 122080480. Four confirmed compatibilities: Victoria 20/20 and Victoria 20/20 F.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Baxi Roca Victoria 20/20 | Baxi Roca | Contrasted |
| Baxi Roca Victoria 20/20 F | Baxi Roca | Contrasted |
| Baxi Roca Victoria 20/20 T | Baxi Roca | Contrasted |
| Baxi Roca R 20/20 CXF | Baxi Roca | 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 part number 122080480 is the piece 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 122080480. 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 flow meter 122080480 resolves.
The flow meter detects the passage of water to activate the domestic hot water. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
There is no hot water coming out of the tap even though gas and cold water are reaching the boiler properly.
Cause: The flow detector does not inform the PCB that there is water circulation, and the burner does not ignite for domestic hot water.
Open the hot water tap fully and check that the flow is strong and constant; with low mains pressure, the sensor may not activate even if it is in good condition.
- 02
The burner ignites with a delay or intermittently when requesting hot water.
Cause: The sensor detects the flow of water irregularly due to dirt, scale, or wear of the sensor element.
Check if the cold water inlet filter is dirty or calcified before considering the part defective.
- 03
The heating works normally, but the domestic hot water never responds.
Cause: This sensor only operates in the domestic hot water circuit, so a fault in it should not affect the heating.
Confirm that the fault is exclusive to domestic hot water; if the heating also fails, the problem lies in another part, not in the flow sensor.
Fault codes for Baxi Roca that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 50-60-70-90 | Overtemperature thermostat open (with flame). | The DHW flow detector (122080480) may get stuck or send a false demand signal; the boiler ignites without opening the tap and, as the primary does not circulate, it overheats until the clixon trips. Check if it starts on its own without demand and measure the signal from the flow meter (pulses/continuity) and the condition of the magnet/turbine. |
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 flow meter Baxi Roca 122080480
- Catalogue reference
- 122080480
- Brand
- Baxi Roca
- Type of part
- Flow detectors
- Units in stock
- 2 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- 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.
- Type of connection
- 2-way connector (white)
- Sensor element
- Thermistor type (according to the appearance of the tip in the photo)












