Junkers Euromaxx Plate Heat Exchanger ZWC24 1MF2A Ref. 8716771039

Junkers boilers compatible with reference 8716771039

Plate heat exchanger with reference 8716771039. 19 verified compatibilities: ZWC 24-1 MFA and ZWC 24-1 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 ref. 8716771039 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 8716771039. If it is not visible, do not identify the part by 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 plate heat exchanger 8716771039 resolves.

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 comes out colder than what the domestic hot water thermostat indicates, especially if it hasn't been used for a while.

  Cause: Limescale deposits in the hottest points of the plates, affecting the heat exchange and noticeable in the temperature.

  Increase the domestic hot water thermostat to the maximum and check if the temperature improves; if it does not respond, the heat exchanger is losing efficiency.

• 02

  The hot water flow is weak compared to the cold water from the same tap.

  Cause: The obstruction caused by limescale narrows the internal channels, limiting the flow of water through the heat exchanger.

  Open the domestic hot water tap fully for a few seconds and compare the flow rate with that of the cold water; if it is clearly lower, check the heat exchanger.

• 03

  The boiler makes noise or vibrates a little right when the hot water starts to flow.

  Cause: The water forces its way through partially blocked channels, creating turbulence inside the heat exchanger.

  Listen to see if the noise occurs only when requesting domestic hot water and disappears during heating; this helps to pinpoint the problem in the heat exchanger.

• 04

  There is moisture visible under the boiler even though there are no visible leaks in the pipes or valves.

  Cause: With use, the seals of the heat exchanger lose tightness and allow water to escape outside.

  Dry the area well, run the boiler for a while, and check if moisture reappears right in the area of the heat exchanger.

Fault codes from Junkers that this part resolves.

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 Junkers plate heat exchanger 8716771039

Catalogue reference

8716771039

Brand

Junkers

Type of part

Plate heat exchanger

Units in stock

4 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days

Data read on the part and in the manufacturer's documentation

What we have not been able to verify does not appear here.

Code engraved on the part

8-716-771-78x

Manuals and technical documentation

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

• Junkers ZWC 24-1 MF2A manual (PDF)Document © Junkers, provided as a technical reference.