PCB 8613310175_V03 with ACE Transformer for Junkers Cerapur Smart ZWB 28-3C 23
Control board of the boiler with the ACE transformer mounted in the same assembly. It must be checked by a technician.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- internal SKU
- PLC208
- Warranty
- 1 year
Compatible models
Check the listed models, version and part number before ordering the spare part.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers Cerapur Smart ZWB 28-3C 23 | Junkers | Contrasted |
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.
| Junkers ZWB 28-3 A/E | Junkers | Unconfirmed |
|---|---|---|
| Junkers ZSB 14..22-3 A/E, ZSBR/ZSBE 16..28-3 A and ZBR 42-3A | 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 it 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 8613310175_V03 and version 2.1 with the marking KA on your PCB, and compare them with ours. Registered application: 8613310175 V01.
- Look at the transformer: ours is an ACE with 8.718.224.657 and 000136017 (30/10). Compare them with the one on your PCB.
- Compare the connectors: yellow PR, PO, NP, LP; red N, Z; orange 8, 6, 2, 7. Terminals on the PCB: LR, Ls, Ns, N, L.
- Do not confuse it with the PCBs 8 748 300 673/674 or 8 748 300 915 (official lists of series C) nor with 8748300956 (Bosch catalog, series A/E): they are different codes.
- If they match, call us at 911 17 77 77 with the model of your boiler.
Symptoms and checks
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
The boiler does not ignite and locks with EA.
Cause: No flame after several ignition attempts.
Check the gas and reset once. If it returns, have a technician check it.
- 02
The boiler detects flame with the burner off and locks out (F7).
Cause: Ionization electrode with earth leakage or gas valve that does not close.
Shut off the gas and have a technician check it; do not insist on resets.
- 03
No domestic hot water due to faulty sensor (A7); the heating may continue to operate.
Cause: Faulty domestic hot water temperature sensor or poor continuity in the connection cable.
Check the continuity of the sensor and its cable; if they are fine, have a technician replace the sensor.
- 04
F0 appears on the boiler screen.
Cause: Internal fault of the PCB (main control unit).
Note the code and notify a technician.
- 05
A fault code B (B1, B2, B3, B7 or EH) appears due to a coded connector or data error.
Cause: The PCB does not recognize the coded connector or there is an internal data error.
Have a technician check it.
- 06
The boiler shows A8 and loses communication with the regulator.
Cause: Cut in the bus between the PCB and the regulator. It is usually a fault with the cable or the regulator, not with the PCB.
Have a technician check the bus cable and the regulator before replacing the PCB.
- 07
The boiler shows b1.
Cause: The encoder plug on the PCB is poorly mounted or damaged.
Have a technician check the encoder plug before ordering a PCB.
- 08
The boiler shows b2/b3.
Cause: Internal data error of the PCB.
Have a technician check it.
Error codes requiring diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| EA | Flame not detected after several ignition attempts; the boiler locks out. | Reset once. If it returns, check the gas and the electrode; if it persists, it points to the PCB or the gas valve: have a technician check it. |
| F7 | The boiler detects a flame with the burner off. | Notify the technician: it could be an electrode with a ground fault, a gas valve that is not closing, or the electronics. Do not insist on resets. |
| E9 | Overheating of the main heat exchanger or failure of the safety sensor; the limiter trips. | Let it cool down and check the circulation and the valves. If it returns, have a technician check it. |
| A7 | Domestic hot water sensor faulty. | Check the continuity of the sensor and its cable; if they are fine, it points to the PCB: have a technician check it. |
| D1 | Return sensor short-circuited or disconnected. | Check the wiring and the return sensor; if they are fine, it points to the PCB: have a technician check it. |
| B7 | Internal fault in the electronics. | If it repeats after resetting, it points to the PCB: have a technician check it. |
| FA | Flame is detected after closing the gas valve. | It is a security fault: have a technician check it without delay. |
| B1 | Unrecognized coding connector. | Check the coding connector on the PCB; if it doesn't fit, have a technician check it. |
| F0 | Internal fault of the PCB (main control unit of the boiler). | Note the code and have it checked by a technician. Point to the PCB if the fault returns after resetting the boiler. |
| E0 | Internal error of the PCB or ignition module. | Have a technician check it. Point to the PCB or the ignition module if the fault code reappears. |
| B2 | Internal data error of the PCB. | Have a technician check it. Note down the PCB if the fault code appears again. |
| B3 | Internal data error of the PCB. | Have a technician check it. Note down the PCB if the fault code appears again. |
| A8 | Communication interrupted between the PCB and the regulator or the bus. | First, check the bus cable and the regulator. If both are fine, point to the PCB. |
| b2/b3 | Internal data error of the PCB. | If it repeats, it could be the PCB. Have a technician check it. |
| Ad | Temperature sensor of the accumulator not recognized. | Check the sensor of the accumulator and its cable. If they are fine, the PCB may not be reading it. |
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
- Uniclima internal SKU
- PLC208
- 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.
- Printed reference on the ACE transformer
- 8.718.224.657
- ACE subcomponent code
- 000136017
- Additional marking of the ACE subcomponent
- 30/10
- Terminal marking of the transformer
- 0, lightning symbol, 2
- PCB code
- 8613310175_V03
- Version of the PCB
- 2.1
- Additional marking on the PCB
- KA
- PCB terminals
- LR, Ls, Ns, N, L
- Yellow connector markings
- PR, PO, NP, LP
- Red connector markings
- N, Z
- Orange connector markings
- 8, 6, 2, 7
- Source of additional data
- Declared information; auxiliary references and applications without equivalent from the accredited manufacturer.
- Inventory — Alternative terminals read in another photo
- 0, 1, 2
- Inventory — Subcomponent marking
- ACE; code 000136017; reference 8.718.224.657
- Inventory — Visible plate marking
- 8613310175_V03; version 2.1; KA
- Inventory — Visible PCB connectors
- red N, Z; orange 8, 6, 2, 7
- Inventory — Indicated brand
- Junkers
- Manufacturer information (Cerapur series -3) — Fuses on the PCB
- T 2.5 A (230 V) · T 0.5 A (5 V) · T 1.6 A (24 V) · Official manual 6 720 641 751 (-3 A/E)
- Registered reference
- 8613310175_V03
- To confirm: Junkers ZWB 28-3 A/E — The available association cites 8613310175 (series -3) and 87483007530; it does not confirm the V03 revision of this unit.
- To confirm: Junkers ZSB 14..22-3 A/E, ZSBR/ZSBE 16..28-3 A and ZBR 42-3A — The available association cites 8613310175 (series -3) and 87483007530; it does not confirm the revision V03 of this unit.
- Do not confuse: 8 748 300 915 — PCB from the official spare parts list of the ZSB22 / ZWB28-3CE23 (6721840219) — Another code: the list does not mention 8613310175 and brings the transformer separately (8 747 201 342)
- Do not confuse: 8 748 300 673 / 674 — PCB from the official list of the ZSB14/22-3C and ZWB24/28-3C (6720616730) — Another code: that list does not mention 8613310175.
- Do not confuse: 8748300914 — PCB for the ZWB 28-3C23 S2800 — Another code: the parts list does not mention 8613310175.
- Do not confuse: 8748300956 — Leiterplatte GZT5-II DACH associated with ZWB 28-3 A 21, A 23, and E 23, not with 28-3 C. It is a different code and does not reference 8613310175.
- Do not confuse: 8748300928 — PCB that appears as a substitute for 87483007530 (series -3 A/E). It is a different code and does not reference 8613310175.
- and they mention 8613310175 as V01 and ours is V03. The official lists read for this series provide different PCBs and do not mention this code: compare the marked ones before ordering it.
- The relationship between 8613310175 (V01) and 87483007530 appears in a set with a transformer; the marking _v01 has also been associated with ZWB 28-3 C 23. These are associations of V01 and do not confirm the V03 revision on their own. The part and its registered boiler maintain their indicated compatibility status in this sheet.
Frequently asked questions
Where is the code for this PCB and what other markings should I compare?
Is it compatible with my Junkers Cerapur Smart ZWB 28-3C 23?
What is the difference between the 8613310175_V03 and the 8613310175 V01?
What do 8613310175, 87483007530, and 8.718.224.657 mean?
Is it compatible with other Junkers from the -3 series (ZSB, ZWB, ZBR)?
Why does the official breakdown of my ZWB 28-3C show a different PCB?
Who should install it? And what about the coding connector and the fuses?
