Junkers Cerastar ZWN 24 7 MFA Plate Heat Exchanger Ref. 8716771987
RefurbishedJunkersPlate heat exchanger

Junkers Cerastar ZWN 24 7 MFA Plate Heat Exchanger Ref. 8716771987

Stock · 5 units

When you turn on the hot water tap, the Junkers Cerastar ZWN 24 7 MFA Plate Heat Exchanger Ref. 8716771987 is responsible for transferring heat from the primary circuit to the domestic hot water instantly. If this part fails, you will notice that the water comes out lukewarm or with fluctuating temperature, and the flow rate of the DHW may decrease. This heat exchanger is compatible with several models, such as the ZWN 24-7MFA, ZWB 28-3C, and ZWC 30/30-3MFA, among others. It is recommended to replace it when you experience these symptoms of unstable temperature or low flow rate.

VAT included

Compatibility

Junkers boilers compatible with reference 8716771987

Plate heat exchanger with reference 8716771987. 16 verified compatibilities: ZWC35/35-3MFA23 and ZWC35/35-3MFA31.

Proven compatibility

Boiler modelFamilyVerification
Junkers ZWC35/35-3MFA23ZWC 35/35-3MFAContrasted
Junkers ZWC35/35-3MFA31ZWC 35/35-3MFAContrasted
Junkers ZWC35-3MFA23S36ZWC 35/35-3MFAContrasted
Junkers ZWC30/30-3MFA23ZWC 30/30-3MFAContrasted
Junkers ZWC30/30-3MFA31ZWC 30/30-3MFAContrasted
Junkers ZWC24/28-3MFA23ZWC 24/28-3MFA-MFKContrasted
Junkers ZWC24/28-3MFA31ZWC 24/28-3MFA-MFKContrasted
Junkers ZWC24/28-3MFK23ZWC 24/28-3MFA-MFKContrasted
Junkers ZWC24/28-3MFK31ZWC 24/28-3MFA-MFKContrasted
Junkers ZWC28/28-3MFK23ZWC 28/28-3MFKContrasted
Junkers ZWC28/28-3MFK31ZWC 28/28-3MFKContrasted
Junkers ZWB28-3C23ZWB 28-3CContrasted
Junkers ZWB28-3C31ZWB 28-3CContrasted
Junkers ZWB28-3CEZWB 28-3CContrasted
Junkers ZWN24-7MFA23ZWN 24-7MFAContrasted
Junkers ZWN24-7MFA31ZWN 24-7MFAContrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it ·

Guide

How to check if ref. 8716771987 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 8716771987. 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.
Diagnosis and fault codes

Symptoms and faults that the heat exchanger 8716771987 solves.

The plate heat exchanger transfers heat to the domestic hot water. These are the typical symptoms and what to do:

Common symptoms and faults

  • 01

    The hot water from the tap comes out fine at first and then gradually cools down even though the boiler remains on.

    Cause: The heat exchanger plates accumulate scale on the inside and transfer less heat to the domestic hot water.

    Check the water hardness in the area and see if the inlet filter has scale before declaring the part as worn out.

  • 02

    A drip or a puddle appears under the boiler that is only noticeable when you request domestic hot water.

    Cause: The heat exchanger has lost its seal between the plates and is allowing water to pass where it shouldn't.

    Locate whether the leak occurs only with hot water or also in heating, to avoid confusing it with another nearby joint.

  • 03

    The boiler starts for domestic hot water but cuts off or modulates strangely after a few seconds.

    Cause: A passage blocked by limescale reduces the flow rate, and the control unit interprets that something is wrong.

    Check the flow meter and the cold water inlet filter before replacing the heat exchanger.

  • 04

    A bubbling or hissing noise is heard right when the hot water tap is opened.

    Cause: The narrowing due to scaling generates turbulence in the water flow within the plates.

    Bleed the circuit and measure the pressure of the installation before associating the noise with the heat exchanger.

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.

Technical data

Data sheet for Junkers plate heat exchanger 8716771987

Catalogue reference
8716771987
Brand
Junkers
Type of part
Plate heat exchanger
Units in stock
5 units
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
Return
14 days
Documentation

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

Frequently Asked Questions

Frequently asked questions about the plate heat exchanger 8716771987

Does this heat exchanger fit a Junkers ZWN24-7MFA23 boiler?
Yes, the ZWN24-7MFA23 is on the list of compatible boilers for this part.
Is it also compatible with a Junkers ZWC30/30-3MFA?
Yes, the ZWC30/30-3MFA is listed among the compatible models for this heat exchanger.
When should this heat exchanger be replaced in a boiler from the ZW series?
When it loses tightness or its performance in heat transfer between the primary circuit and the domestic hot water or heating decreases.

Spare parts related to Junkers ZWC 24/28-3MFA-MFK

Entrega calculada por destinoDelivery time shown at checkout
1-year warrantyreviewed and tested
14-day returnuninstalled parts
Technical supportwe verify your model
Junkers Cerastar ZWN 24 7 MFA Plate Heat Exchanger Ref. 8716771987