Bosch / Junkers PCB 8613310255_V01 · ZWN 25-8 MFA and ZSC 35-3 MFA
Application for the exact variant pending confirmation. PCB (control board) for boiler. In case of fault F0 in Junkers ZWN 25-8 MFA, it is advisable to first check the connections and the ignition cables.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- Catalogue reference
- 8613310255-V01
- Warranty
- 1 year
Boilers Bosch / Junkers compatible with reference 8613310255-V01
PCB with reference 8613310255-V01. 0 verified compatibilities. There are 2 other models that we are still checking.
Models pending verification
These models are associated with this reference, but we have not finished verifying them yet, so we do not consider them compatibleIf your boiler is one of them, send us a photo of the part you are going to replace and we will verify it before you purchase.
| Bosch / Junkers ZWN 25-8 MFA | Bosch / Junkers | Unconfirmed |
|---|---|---|
| Bosch / Junkers ZSC 35-3 MFA | Bosch / Junkers | Unconfirmed |
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.
- Look at the model on the rating plate of your boiler: Registered application: 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 these, 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.
- 04
The ZWN 25-8 MFA shows fault F0 (internal fault).
Cause: Internal fault of the device: poorly secured electrical connections or ignition cables, or, if applicable, the PCB.
Check the electrical connections and ensure that the ignition wires are securely fastened. Replace the PCB only if necessary.
- 05
The ZWN 25-8 MFA shows fault E9 (temperature limiter tripped).
Cause: It may be related to the installation pressure, the temperature sensor, the pump, or the PCB fuse.
Check the pressure, the sensor, the operation of the pump, and the fuse of the PCB, and bleed the unit.
- 06
The ZWN 25-8 MFA shows fault F7 (flame with the appliance off).
Cause: Possible moisture on the circuit board.
Check for moisture on the circuit board before ordering another one.
Bosch / Junkers fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| F0 | Internal fault (ZWN 25-8 MFA) | Check the electrical connections and the secure attachment of the ignition wires. If necessary, replace the PCB (control board). |
| E9 | Temperature limiter tripped (ZWN 25-8 MFA) | Check the pressure of the installation, the temperature sensor, the operation of the pump, and the fuse of the PCB, and bleed the unit. The control board is just one of the points to check. |
| F7 | Call with the device turned off (ZWN 25-8 MFA) | Check for moisture on the circuit board. |
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
- PLC260
- Brand
- Bosch / Junkers
- Type of part
- PCBs (control boards)
- Units in stock
- 10 pcs
- 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 — Marked box
- 5.1 KA
- Inventory — EPCOS capacitor
- 0.1 μF; 275 V~
- Inventory — Semiconductor
- BUK9624-55A
- Inventory — Connector
- 9, 8, 7
- Inventory — Application indicated in inventory
- ZWN 25-8 MFA
- Identification — Marked code
- 8613310255_v01
- Inventory data — Marked box
- 5.1 KA
- Inventory data — EPCOS capacitor
- 0.1 μF; 275 V~
- Inventory data — Semiconductor
- BUK9624-55A
- Inventory data — Connector
- 9, 8, 7
- Inventory data — Application indicated in inventory
- ZWN 25-8 MFA
- Pending applications to verify
- ZWN 25-8 MFA — compatibility noted; pending confirmation by variant.
- 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" (pos. 3, group Control box) in the official Bosch breakdown of the CeraclassExcellence ZSC35-3MFA23S7200; the Italian version refers to it as "EX 8748300890" in the product sheet — Another code: without additional confirmation it links to 8613310255. Confirmed registration: the 8613310255_V01 for the ZSC 35-3 MFA; compare the code of your PCB.
- 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.
- Pending registered applications to confirm by model, variant, or programming: ZWN 25-8 MFA; ZSC 35-3 MFA.
Frequently asked questions: PCB 8613310255-V01
Where is the code for this PCB and what other markings should I compare?
Is it compatible with my ZWN 25-8 MFA?
Is it compatible with my ZSC 35-3 MFA?
Are 8613310255_V01, 8613310255-V01, and 8613310255 the same PCB?
Is it equivalent to 8 748 300 947 or to 8748300933?
What faults of the ZWN 25-8 MFA point to the PCB?
Who should install it and how do you access the electronics of the ZWN 25-8 MFA?
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