3-Way Valve Junkers Novastar ZW20 1AME23S2805 Ref. 8708505014
RefurbishedJunkers3-way valves

3-Way Valve Junkers Novastar ZW20 1AME23S2805 Ref. 8708505014

Stock · 7 units

The Junkers Novastar ZW20 1AME23S2805 3-Way Valve Ref. 8708505014 is a component that allows the switching of water between the heating circuit and the domestic hot water circuit. If it malfunctions, the user will notice that there is hot water but no heating, or vice versa, or that both circuits are mixing. This valve is compatible with several boiler models, such as the ZW20-1AME, ZW20-1KD, and ZW23AE, among others. It is recommended to replace it when there are switching issues or water leaks.

VAT included

Compatibility

Junkers boilers compatible with reference 8708505014

Three-way valve with reference 8708505014. 12 verified compatibilities: ZW20-1AME and ZW20-1KD.

Proven compatibility

Boiler modelFamilyVerification
Junkers ZW20-1AMEJunkers ZW20 (Novastar)Contrasted
Junkers ZW20-1KDJunkers ZW20 (Novastar)Contrasted
Junkers ZW20-1KEJunkers ZW20 (Novastar)Contrasted
Junkers ZW20-2AMEJunkers ZW20 (Novastar)Contrasted
Junkers ZW20-2KDJunkers ZW20 (Novastar)Contrasted
Junkers ZW20-2KEJunkers ZW20 (Novastar)Contrasted
Junkers ZW20AMEJunkers ZW20 (Novastar)Contrasted
Junkers ZW20KDJunkers ZW20 (Novastar)Contrasted
Junkers ZW20KEJunkers ZW20 (Novastar)Contrasted
Junkers ZW23AEJunkers ZW23Contrasted
Junkers ZW23KEJunkers ZW23Contrasted
Junkers ZW23-1AEJunkers ZW23Contrasted

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

Guide

How to check if ref. 8708505014 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 8708505014. 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 3-way valve 8708505014 resolves.

The 3-way valve diverts water between heating and domestic hot water. These are the typical symptoms and what to do:

Common symptoms and faults

  • 01

    The boiler does not switch correctly between heating and domestic hot water.

    Cause: The internal mechanism of the valve does not complete the rotation and keeps both paths open at the same time.

    Touch the radiators while requesting hot water: if both circuits heat up, the valve is not closing properly.

  • 02

    The valve actuator does not move.

    Cause: The gear motor is not receiving power or the internal gear is broken and not transmitting movement.

    Check if the actuator disc rotates when requesting hot water; if it is stopped, check the wiring and the fuse of the PCB.

  • 03

    Noise or leak in the area of the 3-way valve

    Cause: The seals of the gas valve have hardened and no longer seal properly.

    Dry the area well and check after a while of operation to see if the leak comes from the body or from a nearby fitting.

  • 04

    The heating turns on when only domestic hot water is requested (or vice versa).

    Cause: The valve gets stuck halfway and sends hot water to the wrong circuit.

    Check if the problem is constant or intermittent: if it is occasional, it may be a fault with the control instead of the gas valve.

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 the Junkers 8708505014 three-way valve.

Catalogue reference
8708505014
Brand
Junkers
Type of part
3-way valves
Units in stock
7 units
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
Return
14 days
Frequently Asked Questions

Frequently asked questions about the 3-way valve 8708505014

Does this valve fit the Junkers ZW23AE or only the ZW20?
Yes, it is also compatible with ZW23AE and ZW23KE, as well as several models from the ZW20 range.
What fault of the Junkers ZW20 boiler points to this 3-way valve?
It is checked when the boiler does not switch properly between heating and domestic hot water.

Spare parts related to Junkers Junkers ZW20 (Novastar)

Entrega calculada por destinoDelivery time shown at checkout
1-year warrantyreviewed and tested
14-day returnuninstalled parts
Technical supportwe verify your model
3-Way Valve Junkers Novastar ZW20 1AME23S2805 Ref. 8708505014