
Flow Detector Wiring Adapter Boiler CGB - Ref. 244407499
It detects the flow of water when a tap is opened and commands the ignition to produce domestic hot water. When it fails, no hot water comes out even though the tap is open, which can generate fault code 45: Flow sensor (flow detector) faulty. This wiring adapter is compatible with Wolf CGB-K boilers, such as models CGB-K 20, CGB-K 24, and CGB-K 40-35, among others. It should be replaced when there is a lack of hot water when the tap is opened.
VAT included
Consult via WhatsAppWolf boilers compatible with reference 244407499
Flow meter with reference 244407499. Three confirmed compatibilities: CGB-K 20 and CGB-K 24.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Wolf CGB-K 20 | Wolf CGB-K (combi, axial flow sensor) | Contrasted |
| Wolf CGB-K 24 | Wolf CGB-K (combi, axial flow sensor) | Contrasted |
| Wolf CGB-K 40-35 | Wolf CGB-K (combi, axial flow sensor) | 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. 244407499 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 244407499. 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 244407499 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
The hot water comes out in spurts, it cuts off and comes back without you touching the tap.
Cause: The flow sensor connector makes intermittent contact, and the boiler loses and regains the water flow signal.
Move the connector with the boiler running and the water open: if the hot water cuts off or starts just by touching it, the problem is in the wiring, not in the sensor.
- 02
There is no domestic hot water even though the heating turns on without any problem.
Cause: If the adapter does not transmit the signal from the sensor, the control unit does not realize that there is a demand for domestic hot water and does not switch to that mode.
Check that the connector is properly seated and that there is no oxidation on the pins before assuming the flow sensor is faulty.
- 03
The water is coming out cooler than usual even though the faucet flow is normal.
Cause: A poor contact can cause the flow reading to be distorted, and the boiler modulates the flame incorrectly.
Check that the heat shrink tubing and cable insulation are not cracked or damp: moisture there can distort the signal.
- 04
The fault appears and disappears depending on how you move the pipes or wiring in that area.
Cause: A damaged or poorly secured adapter moves with vibrations and loses contact randomly.
Secure the wiring with cable ties and check that it does not rub against hot parts before replacing it.
Fault codes for Wolf that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 45 | Flow sensor (flow detector) fault. | The flow detector 244407499 does not deliver signal/pulses to the electronics (open, shorted, or without power), causing the equipment to register a sensor fault. Verify by reading the DHW flow value in the BM/BM-2 menu/thermostat while opening a tap (it does not change) and measuring continuity/power and signal from the sensor to the PCB. |
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.
Wolf 244407499 flow meter datasheet
- Catalogue reference
- 244407499
- Brand
- Wolf
- Type of part
- Flow Detectors
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days



