Honeywell W4115B-1317 Control Board · PCB 45005977-001 for Ferroli Master Atmospheric
Application to the exact variant pending confirmation. To be confirmed: It is the PCB that controls the boiler. The Italian classification refers to it as the ignition board ("schede accensione per caldaie").
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- internal SKU
- PLC424
- Warranty
- 1 year
VAT included Stock · 2 units
Honeywell compatible boilers
PCB. 0 verified compatibilities. There are 4 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.
| Honeywell Ferroli Optima | Honeywell | Unconfirmed |
|---|---|---|
| Honeywell Ferroli Hawk II Combi NG | Honeywell | Unconfirmed |
| Honeywell Ferroli NE Fluss | Honeywell | Unconfirmed |
| Honeywell FER Master Atmospheric (Ferroli) | Honeywell | 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 W4115B-1317 (sometimes written as W4115B1317) and the circuit code 45005977-001, revision 02.
- Compare the marked 963743 1968 and 9640 MF7, the silkscreen 2AT next to the fuse and the transformer SEMAR 31101007 (code 45006113-001).
- Do not confuse it with the W4115B1325 (VMF7M1 kit from the Ferroli catalog): they connect the 1317 to the same code 39803410 as the catalog and match it with the 1325; compare the exact ending.
- Check on the rating plate that your boiler is a Ferroli Master atmospheric, the one you have registered.
- if they match, call us at 911 17 77 77 with the model of your boiler. Any questions? Send us a photo of the label of your spare part and the data plate from the Contact section.
Symptoms that require diagnosis on the PCB
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: the burner does not start and fault code A01 appears.
Cause: There is no gas, broken electrode, or faulty gas valve.
Check that gas is arriving and reset once. If it repeats, have a technician check it.
- 02
The boiler detects flame with the burner off and locks out (A02).
Cause: Electrode or PCB anomaly.
Check the electrode and its wiring. If they are fine, have a technician check the PCB.
- 03
The boiler locks out due to overheating (A03).
Cause: Heating sensor faulty or lack of water circulation.
Bleed the air and check the pump. If it happens again, have a technician check it.
Honeywell fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| A01 | Ignition failure: the burner does not ignite and the boiler locks out. | Check that gas is reaching and that the electrode is not dirty or broken. If it returns after resetting, it points to the PCB or the gas valve: have a technician check it. List of the Ferroli range; confirm in the Master manual. |
| A02 | There is a flame signal with the burner off and the boiler locks out. | Check the wiring and the condition of the ionization electrode and the siphon. If the electrode is fine, the PCB is the part to check: have a technician look at it. Confirm in the Master manual. |
| A03 | Overtemperature protection: the boiler locks out due to excessive heat. | Check that there is water circulation and that there is no air in the system. If the issue persists, it points to the heating sensor or the PCB: have a technician check it. Confirm in the Master manual. |
| F12 | Fault in the domestic hot water sensor. | Check the wiring and the domestic hot water sensor. If they are fine, the PCB may be reading the sensor incorrectly. Confirm in the Master manual. |
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: Honeywell PCB
- Uniclima internal SKU
- PLC424
- Brand
- Honeywell
- Type of part
- PCBs (control boards)
- Units in stock
- 2 units
- 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.
- PCB code
- 45005977-001, revision 02
- Power supply marked on PCB
- 230 V~; 50 Hz
- Silkscreen next to the fuse
- 2AT
- Silkscreened connection identifiers
- X1 to X9; XF
- Mounted transformer
- SEMAR 31101007; code 45006113-001
- Primary marking of the transformer
- 230 V; 50/60 Hz
- Marked secondaries of the transformer
- 24 V, 8 VA / 18 V, 0.2 VA
- Marked terminals of the transformer
- 230, 0 / 24, 18, 0
- Additional literal marking of the transformer
- 08/96
- Types of integrated circuits
- Philips HEF4053BP; 2 Philips LM324N; 2 ST LM339N
- Additional markings on the PCB label
- 963743 1968; 9640 MF7
- Registered reference
- W4115B-1317
- Additional markings
- PCB code 45005977-001, revision 02. Fuse 2AT. Connections X1–X9 and XF. SEMAR transformer 31101007; code 45006113-001; additional marking 08/96. Integrated circuits: Philips HEF4053BP; 2 × Philips LM324N; 2 × ST LM339N. Additional label codes: 963743 1968; 9640 MF7.
- Pending applications to verify
- FER MASTER ATMOSPHERIC — confirmed; pending documentary confirmation.
Before purchasing
- Please note that incorrect installation or a fault in another component can render this spare part unusable: rule out other causes before replacing the PCB.
- To confirm: Ferroli Optima — with the 1317: (refurbished, with 45005977-001). Another one gives the 39803410 for various Optima.
- To confirm: Ferroli Hawk II Combi NG — Only for 39803410 (online); does not mention 1317.
- To confirm: Ferroli NE Fluss — Only the W4115B1325 is compatible with 39803410; it does not mention 1317.
- Do not confuse: W4115B1325 — Honeywell VMF7 PCB / VMF7M1 kit with the same Ferroli code 39803410 in the Ferroli catalog and in (NE Fluss) — Different ending (1325, not 1317): they share code 39803410 in different versions; we do not consider them interchangeable.
- Do not confuse: W4115B1192 — Another reference from the W4115 series in the table, which is given for "FERROLI, etc." — Another ending: it is not the 1317.
- The Ferroli spare parts catalog lists 39803410 with W4115B1325 (kit VMF7M1), not with 1317. They link it to 1317; that's why it's a piece of information to be confirmed.
- Italian models connect the W4115B-1317 with the Ferroli VMF7B (39803410) and with the Ferroli Optima, but the Ferroli catalog lists the 39803410 with the W4115B1325. Registered atmospheric master.
- Pending confirmation of registered applications by model, variant, or programming: FER Master Atmospheric (Ferroli).
Frequently asked questions about the PCB (control board)
How do I identify the Honeywell W4115B-1317 PCB?
Look for the designation W4115B-1317 and the circuit code 45005977-001, revision 02. Also compare the markings 963743 1968 and 9640 MF7, the silkscreen 2AT next to the fuse, and the SEMAR transformer 31101007 with the code 45006113-001. Connect W4115B-1317 with 45005977-001.
Is it compatible with my Ferroli Master atmospheric?
The compatibility of this variant is pending confirmation. Registered application: this PCB for the Ferroli Master atmospheric. None of what we have been able to read links this PCB with the Master nor provides a breakdown with this code. There are Ferroli catalogs 2026 that we have not been able to open. Compare the markings on your PCB with those of this one.
Is it compatible with the Ferroli Optima or other Ferroli boilers?
The compatibility of this variant is pending confirmation. We cannot guarantee it. Registered application for the Ferroli Optima as a refurbished PCB: it is to be confirmed. Online it shows 39803410, not 1317, for Hawk II and 7 Optima; it shows W4115B1325, compatible with 39803410, for the NE Fluss. For another boiler, send us a photo of the label of the PCB and the specifications plate of your boiler from Contact, or call 911 17 77 77.
What are 39803410 and 38316700 that appear in?
Technical sheet: VMF7B W4115B1317 39803410 (formerly 38316700)
Ferroli electronic board vmf7b w4115b1317 39803410 formerly 38316700: the 39803410 would be the Ferroli code for the board and the 38316700 the previous one. The Ferroli catalog lists the 39803410 with the W4115B1325 (kit VMF7M1), not with the 1317. Therefore, it remains to be confirmed.
Is the W4115B-1317 the same as the W4115B1325?
They share the Ferroli code 39803410, but in different versions. The Ferroli catalog and (for the NE Fluss) list the W4115B1325 with the 39803410 and registered designation: compatible with Ferroli; neither mentions the 1317. They link the 1317 to the 39803410. We do not consider them interchangeable: compare the ending of your PCB.
What do W4115B-1317, 45005977-001, and 45006113-001 mean?
W4115B-1317 is the Honeywell designation for the PCB; the W4115 series has other endings, such as 1325 or 1192. 45005977-001 is the code for the printed circuit board (revision 02) and 45006113-001 is the marking for its SEMAR transformer 31101007.
Who should install it and what should be checked beforehand?
A qualified technician: the PCB indicates 230 V~; 50 Hz. Before touching it, disconnect the power supply. Note that incorrect installation or a fault in another part may render this spare part unusable.
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Honeywell W4115B-1317 Control Board · PCB 45005977-001 for Ferroli Master Atmospheric