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

Verify the reference 0020197555 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Saunier Duval (Vaillant Group) 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.

RefurbishedHermann Flow Detectors

Hermann Micraplus Condens 25 A flow meter Ref. 0020197555

Name: Hermann Micraplus Condens 25 A flow meter Ref. 0020197555
Brand: Hermann
SKU: CMC25A
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 Micraplus Condens 25-A, Micraplus Condens 30-A, Thema Condens 25-A (ref. 0020197555). 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: 0020197555
Brand: Hermann
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. 0020197555) equips these models. Verified compatibility; check the reference before purchasing.

Hermann

Micraplus Condens 25-A
Micraplus Condens 30-A

Saunier Duval

Thema Condens 25-A
Thema Condens 25-A-H
Themafast Condens 25-A
Themafast Condens 30-A
Themafast Condens 30-B
Themaclassic C 25
Thelia Condens 25-A
Thelia Condens 30-A
Semia Condens 25-A
Semia Condens 30-A

How do I know if this flow meter / flow detector is the one for my boiler?: Verify the reference 0020197555 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Saunier Duval (Vaillant Group) 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.

Hermann Micraplus Condens 25 A flow meter Ref. 0020197555

Key Data

Hermann

Saunier Duval

Spare Parts Related Boiler Micraplus Condens 25 A