Flow Sensor Turbine Junkers Ceraclass Excellence ZWC 35 3 MFA Ref. 8737602851

Junkers boilers compatible with reference 8737602851

Flow meter with reference 8737602851. Seven confirmed compatibilities: Ceraclass Excellence ZWC 24-3 MFA/MFK and Ceraclass Excellence ZWC 28-3 MFA/MFK.

Proven compatibility

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 ref. 8737602851 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.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference 8737602851. If it is not visible, do not identify the part from its shape alone.
2. Check the full boiler model on its data plate and look for it in the model associations on this page.
3. Compare the connections and physical body with the original part before installation.
4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Symptoms and faults that the flow meter 8737602851 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

  You turn on the tap and no hot water comes out, although the heating works fine.

  Cause: The turbine does not spin or does not send the signal for water flow, and the control board is not aware that there is a demand for domestic hot water.

  Check the pressure and flow of the mains water: if it comes out with low force, the sensor may not reach the minimum activation level even if it is in good condition.

• 02

  Sometimes it heats the water with the same tap and sometimes it doesn't, for no apparent reason.

  Cause: The turbine may be partially obstructed by scale or some impurity that irregularly hinders the blade.

  Shut off the cold water supply, remove the sensor if accessible, and check that the turbine spins freely with your finger, without getting stuck.

• 03

  The hot water cuts off halfway through the shower, the burner turns on and off by itself without touching the tap.

  Cause: The flow signal is flashing because the turbine is rubbing or the internal magnet is worn out, and the control unit interprets that there is no longer any flow.

  Check if the cut coincides with pressure drops in the network (another tap open, cistern filling) before declaring the sensor faulty.

• 04

  It takes several extra seconds for the hot water to come out when turning on the tap.

  Cause: The burner startup depends on the turbine detecting the minimum flow, and if it has difficulty spinning, it takes longer to send the signal.

  Measure how long it takes with the tap fully open; if it improves significantly, the problem may be with the network flow and not 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.

Data sheet for the Junkers flow meter 8737602851

Catalogue reference

8737602851

Brand

Junkers

Type of part

Flow detectors

Units in stock

5 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days