How do I know if this flow meter / flow detector is the one for my boiler?

Verify the reference 178988 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.

The flow meter/flow detector detects the passage of water to activate the domestic hot water (DHW).

Does not provide hot water when the tap is opened even though there is flow?

The flow meter turbine does not detect water flow.

Which models is it suitable for?

Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.

Installation and recommendations

Check the turbine and ensure it is not blocked by limescale.

What does refurbished mean and what coverage does it have?

Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

RefurbishedVaillant Flow Detectors

Vaillant Turbotec Plus VMW ES 21 245 4 5 Flowmeter Ref. 178988

Name: Vaillant Turbotec Plus VMW ES 21 245 4 5 Flowmeter Ref. 178988
Brand: Vaillant
SKU: CCVTT21/245
Price: 20 EUR
Availability: InStock

20 €VAT includedIn stock · 1 unit

Flow meter: refurbished spare part that detects water flow to activate domestic hot water. Useful if no hot water comes out when the tap is opened despite there being flow. Compatible with VMW ES 306/5-5, VMW ES 286/5-5, VMW ES 236/3-5 (ref. 178988). Includes a one-year warranty and delivery within 2–4 working days in the EU.

Consult via WhatsApp

Not sure if it's your part? Send us a photo of the screen printing via WhatsApp and we'll confirm compatibility before you purchase.

Delivery in 2–4 working days

1-year warranty

14-day return

Technical support

Key Data

Reference: 178988
Brand: Vaillant
Type of part: Flow Detectors
Available units: 1 unit in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

The same part (ref. 178988) equips these models. Verified compatibility; check the reference before purchasing.

EcoTec Plus (VMW)

VMW ES 306/5-5
VMW ES 286/5-5
VMW ES 236/3-5
VMW ES 346/5-5

EcoTec Plus (VUW)

VUW 824 246/3-5
VUW 831 316/5-5
VUW 837 376/5-5

EcoTec Pro (VMW/VUW)

VMW 236/3-5
VMW 286/3-5
VUW 24
VUW 28

How do I know if this flow meter / flow detector is the one for my boiler?: Verify the reference 178988 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.
What is it used for?: The flow meter/flow detector detects the passage of water to activate the domestic hot water (DHW).
Does not provide hot water when the tap is opened even though there is flow?: The flow meter turbine does not detect water flow.
Which models is it suitable for?: Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations: Check the turbine and ensure it is not blocked by limescale.
What does refurbished mean and what coverage does it have?: Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.