Junkers Plate Heat Exchanger ZWC35/35-3MFA23 - Art. 774601461A
In the Junkers boilers of the Ceraclass Excellence range, the Junkers ZWC35/35-3MFA23 Plate Heat Exchanger, reference 774601461A, is installed. This part is responsible for transferring heat from the primary circuit to the domestic hot water instantly. If it fails, you will notice that the water comes out lukewarm or with fluctuating temperature, as well as a reduction in the flow of DHW. It is compatible with models such as ZWC 35/35-3 MFA, ZWC 30/30-3 MFA, and ZWB 28-3 C, among others. It is recommended to replace it when error F6 occurs or when the mentioned symptoms become evident.
VAT included
Consult via WhatsAppJunkers boilers compatible with reference 87167719870
Plate heat exchanger with reference 87167719870. 12 verified compatibilities: ZWC 35/35-3 MFA and ZWC 30/30-3 MFA.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZWC 35/35-3 MFA | Ceraclass Excellence (ZWC ... -3 MFA) | Contrasted |
| Junkers ZWC 30/30-3 MFA | Ceraclass Excellence (ZWC ... -3 MFA) | Contrasted |
| Junkers ZWC 24/28-3 MFA | Ceraclass Excellence (ZWC ... -3 MFA) | Contrasted |
| Junkers ZWC 24/28-3 MFK | Ceraclass Excellence (ZWC ... -3 MFA) | Contrasted |
| Junkers ZWC 28/28-3 MFK | Ceraclass Excellence (ZWC ... -3 MFA) | Contrasted |
| Junkers ZWC 28/32-1 MFA | Euromaxx / ZWC 1MFA (ZWC ... -1 MFA) | Contrasted |
| Junkers ZWC 24/28-1 MFA | Euromaxx / ZWC 1MFA (ZWC ... -1 MFA) | Contrasted |
| Junkers ZWC 28-1 MFA | Euromaxx / ZWC 1MFA (ZWC ... -1 MFA) | Contrasted |
| Junkers ZWC 24-1 MF2A | Euromaxx / ZWC 1MFA (ZWC ... -1 MFA) | Contrasted |
| Junkers ZWN 24-7 MFA | Cerastar (ZWN ... -7 MFA) | Contrasted |
| Junkers ZWB 28-3 C | Condens 3000 W / ZWB (ZWB ... -3 C/CE) | Contrasted |
| Junkers ZWB 28-3 CE | Condens 3000 W / ZWB (ZWB ... -3 C/CE) | Contrasted |
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. 87167719870 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.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 87167719870. If it is not visible, do not identify the part by its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the heat exchanger 87167719870 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 domestic hot water comes out cold or intermittently.
Cause: The plates of the heat exchanger become filled with scale and allow less water to pass through, causing a failure in heat exchange.
Open a domestic hot water tap to the maximum and compare the flow rate with that of cold water: if it drops significantly, there may be scale build-up.
- 02
There is water dripping or pooled in the area of the heat exchanger.
Cause: The gaskets or sealing joints degrade and water leaks through micro-cracks.
Dry the area, start the boiler, and locate the source of the drip before assuming it is the heat exchanger.
- 03
The pressure of the heating circuit drops without visible leaks.
Cause: A perforated plate can allow water from the heating circuit to pass into the domestic hot water circuit, emptying the circuit without dripping.
Fill the circuit up to the operating pressure and monitor if it drops again without water on the floor: this indicates a possible issue with the heat exchanger.
- 04
A strange noise is heard when the boiler heats up.
Cause: Water flows under pressure through narrow channels due to accumulated scale, generating turbulence and noise.
Check the water hardness and if there is visible limescale in the inlet filter before replacing the part.
Fault codes from Junkers that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F6 | Fault in the heat exchanger | The heat exchanger may be blocked or damaged, which affects heat transfer. If you notice that the water is not heating as it should or that the boiler is shutting down, it is possible that the heat exchanger needs to be inspected and, if necessary, cleaned or replaced. |
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 87167719870
- Catalogue reference
- 87167719870
- Brand
- Junkers
- Type of part
- Plate heat exchanger
- Units in stock
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- 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.
- Engraved article code
- 774601461A
- PCB code
- E5AS
- Date and batch
- 09-11-28 23:07, Batch No.62922
- Secondary marking
- SSK-C3
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Junkers ZWC 35/35-3 MFA Manual (PDF)Document © Junkers, provided as a technical reference.
Frequently asked questions about the plate heat exchanger 87167719870
What code is engraved on this heat exchanger on the copper edge?
Which Junkers ZW boilers is this heat exchanger compatible with?
When should this heat exchanger of the ZWC35/35 be replaced?
Spare parts related to Junkers Ceraclass Excellence (ZWC ... -3 MFA)
