Junkers HTAF 7002 PCB · 8708300251 for WTD 24 AME 23
Application for the exact variant pending confirmation. Junkers PCB with the designation HTAF 7002. It mounts a SCHRACK RT34024 relay and a HAHN transformer.
- Type of part
- Junkers
- Status
- Refurbished
- internal SKU
- PLC202
- Warranty
- 1 year
VAT included Stock · 1 unit
Compatible Junkers boilers
Junkers. 0 verified compatibilities. There are another 1 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.
| Junkers WTD 24 AME 23 | 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 designation HTAF 7002 (it reads HTAF7002) and the codes 8708300251 and 8 708 300 262.
- Compare the other marked ones: FD00925, 000571 and "Layout version0.1".
- Look at the components: a SCHRACK RT34024 relay and a HAHN type V 17280 transformer with reference 8707201044.
- Do not confuse it with other codes from the WTD 24 AME 23: the PCBs 8738720672 and 8 708 300 112 0 51, the pressure switch 8708505024, and the heat exchanger 87054064220 are different codes.
- they match, call us at 911 17 77 77 with your boiler model and we will reserve it for you. Any questions? Send us a photo of your spare part label and the boiler's specification plate from the Contact section.
Symptoms that require diagnosis in the junkers
Common symptoms and faults
- 01
The spark jumps, but the burner does not ignite and the screen shows EA.
Cause: Lack of signal at the ionization electrode: dirt or moisture, air in the gas pipe, or lack of gas.
Check that gas and pressure are reaching, and inspect the ionization electrode and its cable. If everything is fine, have a technician check it.
Junkers fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| EA | No flame detected: missing signal at the ionization electrode. | Check that gas and pressure are reaching, the connection to the network, the ionization electrode and its cable. If everything is fine and the fault code persists, the PCB is suspect: have a technician check 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 sheet: Junkers
- Uniclima internal SKU
- PLC202
- Brand
- Junkers
- Type of part
- Junkers
- 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 — SCHRACK RT34024 relay subcomponent
- 24 VDC coil; contact 12 A/250 VAC
- Inventory — Transformer subcomponent HAHN
- primary 230 V 50–60 Hz; type V 17280; visible reference 8707201044; ta 70 °C/B; sek I 22 V 33 VA; sek II 230 V 3 VA
- Inventory — Application indicated in inventory
- WTD 24 AME 23
- Inventory — Marked code
- FD00925; 000571
- Identification — Marked designation
- HTAF7002
- Identification — Marked code
- 8 708 300 262
- Identification — Marked code
- FD00925
- Identification — Marked code
- 8708300251
- Identification — Marked code
- Layout version 0.1
- Inventory data — SCHRACK RT34024 relay subcomponent
- 24 VDC coil; contact 12 A/250 VAC
- Inventory data — HAHN transformer subcomponent
- primary 230 V 50–60 Hz; type V 17280; visible reference 8707201044; ta 70 °C/B; sek I 22 V 33 VA; sek II 230 V 3 VA
- Inventory data — Application indicated in inventory
- WTD 24 AME 23
- Inventory data — Marked code
- FD00925; 000571
- Pending applications to verify
- WTD 24 AME 23 — compatibility noted; pending confirmation by variant.
Before purchasing
- Not compatible or excluded: Junkers WTD 24 AME 31, its PCB 8738720672 is compatible with this boiler. Not confirmed: the HTAF 7002 with it.
- Not compatible or excluded: Junkers WTD 27 AME 23, its PCB 8738720672 is compatible with this boiler. Not confirmed: the HTAF 7002 with it.
- Not compatible or excluded: Junkers WTD 27 AME 31, its PCB 8738720672 is compatible with this boiler. Not confirmed: the HTAF 7002 with it.
- Do not confuse: 8 708 300 112 0 51 — PCB (control board) of the connection box, pos. 16, in the spare parts list of the manufacturer for the WTD24 AME family (2011), where the WTD24 AME 23 is listed. The 2017 list gives the same code in pos. 16 — It is another code: when searching for the codes of our PCB (HTAF 7002, 8708300251) in those lists, we have not found them. Confirmation recorded: this PCB for the WTD 24 AME 23; compare the markings on your PCB.
- Do not confuse: 8738720672 — PCB that is listed as compatible with the WTD 24 AME23, 24 AME31, 27 AME23, and 27 AME31. In the manufacturer's lists, it appears as 8 738 720 673 0 49 in 2011 (Steuergerät W2, control unit), in position 1, 8 738 720 672 0 49 in 2017 — It is a different code. This one is provided for the WTD 24 AME 23, but Confirmation registered: in that boiler the HTAF 7002 (8708300251): compare the marked ones before ordering.
- Do not confuse: 8708505024 — Junkers flow switch (original code 87085050240) which a catalog gives for the WTD 24 AME 23 — Another part: it is the flow detector, not the PCB.
- Do not confuse: 87054064220 — Heat exchanger coil Junkers that a catalog provides for the WTD 24 AME 23 and the 24 AME 31 — Another part: it is the heat exchanger, not the PCB.
- Codes read on the part itself or registered. We have not found the HTAF 7002 or the 8708300251 in the spare parts lists of the manufacturer for the WTD24 AME family (2011 and 2017) nor in open sources.
- Compatibility with the WTD 24 AME 23 registered. In open systems, we have not found the HTAF 7002 or its code 8708300251; the manufacturer's lists and other PCB codes for that boiler.
- Pending registered applications to confirm by model, variant, or programming: Junkers WTD 24 AME 23.
Frequently asked questions: junkers
How do I identify the Junkers HTAF 7002 PCB?
Look for the designation HTAF 7002 (it can also be read as HTAF7002) and the codes 8708300251 (circuit screen printing) and 8 708 300 262. Also compare FD00925, 000571, and "Layout version0.1". The more matches you find with your board, the more certain it is that it is the same.
Is it compatible with my Junkers WTD 24 AME 23?
The compatibility of this variant is pending confirmation. Registered application: this PCB for the Junkers WTD 24 AME 23. When searching for its codes in the manufacturer's spare parts lists for the WTD24 AME family (2011 and 2017), we did not find it: those lists provide other codes, such as 8 708 300 112 0 51 (pos. 16; connection box in the 2011 list), and the PCB 8738720672 for that boiler. Compare the markings on your PCB with those on ours.
And what if my boiler is the WTD 24 AME 31, the WTD 27 AME 23, or another one?
The compatibility of this variant is pending confirmation. For other models, we do not have confirmation from the workshop that this PCB can be used with them. Your PCB 8738720672 is compatible with the WTD 24 AME 31, the 27 AME 23, and the 27 AME 31 (and also with the 24 AME 23), so we do not consider it valid for those. Please send us a photo of your PCB label and your boiler label from Contact, or call us at 911 17 77 77.
Why does the PCB have two codes 8 708 300 (the 251 and the 262)?
Both are marked on the PCB itself: 8708300251 and 8 708 300 262; the latter is also the reference given for the spare part. Without additional confirmation read, it explains the difference, and the marked codes do not necessarily correspond to the reference of a kit. Only the last two digits change (51 versus 62).
What other codes appear for the WTD 24 AME 23?
the pressure switch 8708505024 (original code 87085050240) and the coil 87054064220: they are other parts. The manufacturer's lists for the WTD24 AME family show 8 708 300 112 0 51 in position 16 (connection box in the 2011 list), 8 738 720 673 0 49 (2011, control unit W2), in position 1, 8 738 720 672 0 49 (2017). None of these is the code for this PCB (HTAF 7002, 8708300251).
What components does the PCB include and with what data?
Registered confirmation: in this unit a SCHRACK RT34024 relay (coil 24 VDC; contact 12 A/250 VAC) and a HAHN transformer type V 17280, visible reference 8707201044: primary 230 V 50–60 Hz, ta 70 °C/B, secondary I 22 V 33 VA and secondary II 230 V 3 VA.
Who should install this PCB?
A qualified technician. It is the PCB of the boiler and the transformer it uses operates with a primary of 230 V, so it is not a part to be replaced without the proper training and tools.
Junkers HTAF 7002 PCB · 8708300251 for WTD 24 AME 23