Bosch / Junkers PCB 8613310255_V01 · ZWN 25-8 MFA and ZSC 35-3 MFA
It is the PCB of the boiler. In case of fault F0 of the ZWN 25-8 MFA, first check the connections and the ignition cables.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- Catalogue reference
- 8613310255-V01
- Warranty
- 1 year
VAT included Stock · 1 unit
Boilers Bosch / Junkers compatible with reference 8613310255-V01
PCB with reference 8613310255-V01. Two confirmed compatibilities: ZWN 25-8 MFA and ZSC 35-3 MFA.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Bosch / Junkers ZWN 25-8 MFA | Bosch / Junkers | Contrasted |
| Bosch / Junkers ZSC 35-3 MFA | Bosch / Junkers | 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 reference 8613310255-V01 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Look for the code marked 8613310255_V01 on your PCB and compare it in full, with the suffix _V01, not just the ten digits.
- Check the model on the rating plate of your boiler: Registered confirmation: the ZWN 25-8 MFA and the ZSC 35-3 MFA.
- The two units we reviewed have different markings (5.1 KA on one; 2.1KA and 4025X147 S3 on the other): the code that governs is 8613310255_V01.
- other PCB codes: 8 748 300 947 (official breakdown of the ZSC35-3MFA23S7200, another designation) and 8748300933 (ZWN). If yours has one of them, it is most likely not this spare part.
- If they match, call us at 911 17 77 77 with your boiler model and we will reserve it for you.
Symptoms that require diagnosis on the PCB 8613310255-V01
The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
F0 · Internal fault (ZWN 25-8 MFA)
Cause: Official manual, 13.2 Faults, Tab. 24: check the electrical connections and the secure fastening of the ignition cables and, if necessary, replace the PCB.
- 02
Fault of Tab. 24 referring to the fuse of the PCB (ZWN 25-8 MFA)
Cause: Tab. 24 of the official manual for the ZWN 25-8 MFA: check the installation pressure, the temperature sensor, the pump, and the PCB fuse, and bleed the unit.
- 03
Fault of the Tab. 24 referring to the PCB (ZWN 25-8 MFA)
Cause: Tab. 24 of the official manual for the ZWN 25-8 MFA: check for moisture on the PCB.
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 sheet: Bosch / Junkers 8613310255-V01
- Catalogue reference
- 8613310255-V01
- Uniclima internal SKU
- PLC266
- Brand
- Bosch / Junkers
- Type of part
- PCBs (control boards)
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Inventory — Isolated discrepant reading
- 861330255_V01
- Inventory — EPCOS X2 capacitor subcomponent
- 275 V~
- Inventory — Visible marking
- 4025X147 S3
- Inventory — Application indicated in inventory
- ZSC 35-3 MFA
- Identification — Marked code
- 8613310255_v01
- Identification — Marked code
- 2.1KA
- Inventory data — Isolated discrepant reading
- 861330255_V01
- Inventory data — EPCOS X2 capacitor subcomponent
- 275 V~
- Inventory data — Visible marking
- 4025X147 S3
- Inventory data — Application indicated in inventory
- ZSC 35-3 MFA
- Registered reference
- 8613310255-V01
Before purchasing
- The official manual for the ZWN 25-8 MFA requests to check the connections and ignition cables first: the PCB is replaced "if necessary."
- Do not confuse: BUK9624-55A — Semiconductor of the Bosch unit (component of the PCB) — It is an internal component, not the code that identifies the PCB.
- Do not confuse: 8 748 300 947 — PCB "Leiterplatte GZT2c Skin" (position 3, control box group) for Junkers CeraclassExcellence ZSC35-3MFA23S7200; also described as "EX 8748300890". It is another code and its relation to 8613310255 has not been confirmed. The registered compatibility of this unit 8613310255_V01 is ZSC 35-3 MFA; compare the full code.
- Do not confuse: 8748300933 — Refurbished PCB that is compatible with ZWN 25-8 MFA and ZWN 30-8 MFA — Another code: does not mention 8613310255. Registered confirmation: 8613310255_V01 for ZWN 25-8 MFA; compare the code of your PCB.
- A standalone reading of the label of the Junkers unit gave 861330255_V01 (one digit is missing); the complete code is 8613310255_V01.
- To confirm: Both boilers are confirmed. Outside, in France, it cites the base code 8613310255. The official breakdown of the ZSC35-3MFA23S7200 (another designation) and for the ZWN 25-8 MFA provide other PCBs, without mentioning ours.
Frequently asked questions: PCB 8613310255-V01
Where is the code for this PCB and what other markings should I compare?
It is marked on the control board itself: 8613310255_V01 (the photos in the technical sheet show it enlarged). The two units we reviewed also have other markings: 5.1 KA, an EPCOS capacitor of 0.1 μF and 275 V~ and a semiconductor BUK9624-55A in the one cataloged as Bosch; 2.1KA, 4025X147 S3 and an EPCOS X2 capacitor of 275 V~ in the one cataloged as Junkers. Without additional confirmation, these markings explain: the code that is required is 8613310255_V01.
Is it compatible with my ZWN 25-8 MFA?
Yes. Confirmation registered: this PCB for the ZWN 25-8 MFA; the unit it belongs to is listed as Bosch and marks 5.1 KA in the box. The Spanish version provides another PCB, 8748300933, for that boiler and does not mention 8613310255: compare the complete code of your PCB before ordering it.
Is it compatible with my ZSC 35-3 MFA?
Yes. Confirmation registered: this PCB for the ZSC 35-3 MFA; the unit it belongs to is cataloged as Junkers and marked 2.1KA and 4025X147 S3. The official Bosch breakdown for the CeraclassExcellence ZSC35-3MFA23S7200 (catalog designation; it does not state that it is your same variant) lists a different PCB, the 8 748 300 947, and does not mention the 8613310255: compare the complete code of your PCB.
Are 8613310255_V01, 8613310255-V01, and 8613310255 the same PCB?
Yes: 8613310255_V01 and 8613310255-V01 are the same code, written with an underscore or a hyphen (technical sheet). In France, only 8613310255 is mentioned, without V01: we do not know if it is the same variant, so compare the complete code. Without additional confirmation, explain what the suffix V01 indicates.
Is it equivalent to 8 748 300 947 or to 8748300933?
without additional confirmation, they are combined, so we do not consider them equivalent. The 8 748 300 947 is the "Leiterplatte GZT2c Skin," item 3 of the Schaltkasten group in the official breakdown of the ZSC35-3MFA23S7200; the Italian version refers to it as "EX 8748300890" in the product sheet. The 8748300933 is a refurbished PCB that the Spanish version lists for ZWN 25-8 MFA and ZWN 30-8 MFA. Confirmation recorded: the 8613310255_V01 for these boilers.
What faults of the ZWN 25-8 MFA point to the PCB?
The fault table from the official manual (13.2, Tab. 24) includes the F0 internal fault: check the electrical connections and the securing of the ignition cables, and if necessary, replace the PCB. Two other rows refer to the PCB or the circuit board: check the pressure, the sensor, the pump, and the fuse of the PCB (bleeding the unit), and check for moisture on the circuit board. It does not mention the 8613310255_V01.
Who should install it and how do you access the electronics of the ZWN 25-8 MFA?
The official manual for the ZWN 25-8 MFA is addressed to the technician ("Installation and maintenance instructions for the technician"). To access the electronic system, it indicates removing the casing, taking out the screw, and folding the electronic system downwards.
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Bosch / Junkers PCB 8613310255_V01 · ZWN 25-8 MFA and ZSC 35-3 MFA