Hydraulic Body Junkers Bosch Euromaxx ZWC28 1MF2A 23 Ref. 8716771630

Junkers boilers compatible with reference 8716771630

Hydraulic group with reference 8716771630. Eight confirmed 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. 8716771630 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 8716771630. 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 hydraulic group 8716771630 resolves.

The hydraulic group includes the valve, the by-pass, and the water connections. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  You see a limescale or dry water stain around a joint of the hydraulic body.

  Cause: The casting pores or a dry gasket allow for a very slow leak that is only noticeable when drying.

  Clean the area well, leave the boiler running for a few days, and check if the same stain reappears.

• 02

  The boiler is losing pressure without any obvious dripping.

  Cause: An internal porosity in the body can allow water to pass through very slowly, even without a visible leak on the outside.

  Check the pressure gauge, bleed valves, and safety valve before confirming this cause.

• 03

  The domestic hot water and the heating water seem to be mixing, with temperatures that don't match.

  Cause: This body internally separates the circuits; if the passage between them degrades, the water communicates between heating and domestic hot water.

  Check if the fault appears only when heating and domestic hot water are working simultaneously, a typical sign of internal communication.

• 04

  I notice corrosion or white or greenish rust around the body connections.

  Cause: Aluminum and cast iron can suffer from corrosion if different metals are mixed at the joints, weakening the seal over time.

  Inspect the threaded joints before replacing the entire part; sometimes it's enough to just change the gasket of that joint.

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 the Junkers hydraulic group 8716771630

Catalogue reference

8716771630

Brand

Junkers

Type of part

Hydraulic units

Units in stock

3 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days

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.