Junkers PCB LF 01.36 · 8 744 501 278 for ZWA 24 1AM 23
Application for the exact variant pending confirmation. PCB of the boiler, identified as LF 01.36.
- Type of part
- Junkers
- Status
- Refurbished
- internal SKU
- PLC221
- Warranty
- 1 year
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 ZWA 24 1AM 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 codes marked 8 744 501 278, LF 01.36, and FD.285 on the label. The circuit code is 8 748 101 288.
- Compare the fuses (F1 T2A, F3 T3.15, F4 1.25A) and the white block with code 8 747 501 261.
- Do not confuse it with 8748300561, which some provide for the ZWA 24-1 AM: it is a different code.
- Check on the rating plate that your boiler is a Junkers ZWA 24 1AM 23, the model that confirms it.
- if they match, call us at 911 17 77 77 with the model of your boiler. Any questions? Send us a photo from Contact.
Symptoms that require diagnosis in the junkers
Common symptoms and faults
- 01
The reset button flashes once per second.
Cause: Ignition fault, overheating, internal fault or leaks in the safety valve. Among the most common causes is the PCB.
Have a technician check it. Do not insist on repeated resets.
- 02
The reset button flashes four times per second.
Cause: Loose or defective encoder connector, or incorrectly installed or defective heating or domestic hot water NTC. The pressure switch, fan, or flue duct may also fail.
Have a technician check it, who will verify the sensors and the connector before replacing the PCB.
- 03
The heating is not working, but hot water is coming out.
Cause: Fault in the ambient thermostat signal or its connection. It may also be a faulty thermostat or the PCB.
Check the room thermostat and its cable. If it remains the same, have a technician check it.
- 04
The boiler is not working and the indicators are not lighting up.
Cause: No voltage: faulty fuse F1 or F2, faulty transformer or connection, or PCB.
Have a technician check it.
- 05
There is no hot water, but the heating works.
Cause: Faulty water flow detector (turbine) or faulty hot water NTC. It could also be the PCB.
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
- PLC221
- 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.
- Fuse F1
- T2A
- Fuse F3
- T3.15
- F4 fuse
- 1.25A
- Inventory — Fuse F3
- T3.15A
- Inventory — Blue condenser subcomponent
- 1 μF, 400 V, F3
- Inventory — Labeled connector
- GND, 5 V, SDA, SCL, T17
- Inventory — White block subcomponent
- 8 747 501 261; E 3746/6
- Inventory — Application indicated in inventory
- Junkers ZWA 24 1AM 23
- Identification — Marked code
- 8 744 501 278
- Identification — Marked code
- LF 01.36
- Identification — Marked code
- FD.285
- Fusible F1
- T2A
- Fusible F3
- T3.15
- F4 fuse
- 1.25A
- Inventory data — Fuse F3
- T3.15A
- Inventory data — Blue condenser subcomponent
- 1 μF, 400 V, F3
- Inventory data — Labeled connector
- GND, 5 V, SDA, SCL, T17
- Inventory data — Subcomponent white block
- 8 747 501 261; E 3746/6
- Inventory data — Application indicated in inventory
- Junkers ZWA 24 1AM 23
- Additional markings
- Marked variant LF 01.36; code FD 285. Fuses F1 T2A; F3 T3.15A; F4 1.25 A. Blue capacitor: 1 μF, 400 V, F3. Connector: GND; 5 V; SDA; SCL; T17. White block: 8 747 501 261; E 3746/6.
- Pending applications to verify
- Junkers ZWA 24 1AM 23 — compatibility noted; pending confirmation by variant.
- Not compatible or excluded by default: Junkers ZWA 24-1 A — Its official spare parts list provides a different PCB: 8 748 300 496
- Not compatible or excluded from origin: Junkers ZWA 24-1 K — Its official spare parts list provides another PCB: 8 748 300 431
- Do not confuse: 8748300561 — PCB of the Eurosmart ZWA 24-1 AM according to (also listed as "ex 8748300488") — Another code: without additional confirmation it links to 8 744 501 278 nor to LF 01.36. Registered confirmation: 8 744 501 278 for the ZWA 24 1AM 23.
- Do not confuse: 8748300417 — Base PCB ZWA 24-1 A/K from Junkers, — Another code and other variants (A/K), not the AM 23.
- Do not confuse: 8744501254 — Junkers PCB ZWC24-1MFA, — Another boiler and another code, although it starts the same (8 744 501)
- Do not confuse: 8 744 501 228 — Code read on the chip of a PCB for Junkers ZWA 24 — A digit different from ours; it does not say AM 23 nor does it link to 8 744 501 278.
- Registered codes. Without additional external confirmation read the list: the official lists of the ZWA 24-1 A and K provide different PCBs and the 8748300561 for the ZWA 24-1 AM.
- Part, codes, and boiler registered. No external page read cites 8 744 501 278, 8 748 101 288, or LF 01.36 (level 0); they provide other PCBs for the ZWA 24-1 AM, A, and K, which are noted as data.
- Pending registered applications to confirm by model, variant, or programming: Junkers ZWA 24 1AM 23.
Frequently asked questions: junkers
How do I identify this Junkers LF 01.36 PCB and what does each code mean?
Is it compatible with my Junkers ZWA 24 1AM 23?
Is it the same PCB as the 8748300561 that is offered for the ZWA 24-1 AM?
Is it compatible with a ZWA 24-1 A or a ZWA 24-1 K?
Is it the same as 8744501254 or 8 744 501 228, which start the same?
What fuses does it have and which ones should I check before replacing it?
Can I install it myself or should a technician do it?
