Junkers Secondary Plate Heat Exchanger ZWC28 1MFK 23 Zilmet 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

  Water is leaking from underneath the boiler and the source is not immediately visible.

  Cause: The heat exchanger loses seal integrity between the plates, and water leaks through the body of the part.

  Dry the area, place paper underneath, and turn on the boiler to see if the drip is coming directly from the heat exchanger and not from a nearby fitting.

• 02

  The boiler starts for domestic hot water but doesn't heat anything, as if the water just passes through.

  Cause: When the heat exchanger is almost completely blocked by limescale, hardly any water circulates between the two circuits.

  Before replacing it, check that there isn't a clogged filter or aerator right before the heat exchanger.

• 03

  The heating works fine, but the domestic hot water comes out cold or lukewarm.

  Cause: Limescale deposits on the plates reduce heat exchange to the domestic hot water circuit.

  Bleed the air from the boiler and check the cold water inlet filter before confirming the fault in the heat exchanger.

• 04

  Previously, a strong stream of hot water would come out, and now it comes out with little pressure.

  Cause: Limescale gradually closes the passage section within the plates and limits the flow that can pass through them.

  Compare the flow with the cold water tap open the same: if it only decreases in hot, the heat exchanger is suspect.

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