Honeywell PCB Master Inox / Supermaster 24 SE Ref. 0020076179
The Honeywell Master Inox / Supermaster 24 SE PCB (control board) acts as the brain of the boiler, controlling the ignition, burner modulation, pump, and safety features. If it fails, the boiler may not start, become locked, or exhibit erratic behavior, and you might see fault codes 13 or 11. This board is compatible with models such as the Supermaster 24 SE, 28 SE, 30 SE, among others. A technician should confirm through diagnosis whether it needs to be replaced when you notice these symptoms or if a fault in the main circuit board is identified.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- Catalogue reference
- 0020076179
- Warranty
- 1 year
Saunier Duval boilers compatible with reference 0020076179
PCB with reference 0020076179. Eight confirmed compatibilities: F 24 and 24 SE.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval F 24 | NOX Thema | Contrasted |
| Saunier Duval 24 SE | Supermaster | Contrasted |
| Saunier Duval 28 SE | Supermaster | Contrasted |
| Saunier Duval 30 SE | Supermaster | Contrasted |
| Saunier Duval Ecoplus 24 SE | Supermicra | Contrasted |
| Saunier Duval Master Inox 24 SE | Hermann | Contrasted |
| Saunier Duval Master Inox 30 SE | Hermann | Contrasted |
| Saunier Duval Supermicra Condensing 24 SE | Hermann | Contrasted |
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 ref. 0020076179 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 0020076179. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms that require diagnosis on the PCB 0020076179
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 there is no power at any output of the PCB.
Cause: The transformer on the PCB, which reduces the mains voltage to the control voltage, has stopped working.
Measure with a multimeter if there is voltage at the input of the PCB before assuming that the transformer is faulty.
- 02
An error code appears that doesn't clear even after several resets.
Cause: The PCB locks for safety when it detects an out-of-range signal in flame, pressure, or temperature.
Check the sensor associated with that exact fault code before replacing the entire PCB.
- 03
A repeated clicking sound is heard on the PCB, but the pump or burner do not start.
Cause: One of the relays on the PCB does not close the contact properly.
Listen to see if the clicking coincides with the moment the burner or the pump should start; if so, the relay may be the problem.
- 04
The control or the thermostat cannot get the boiler to respond.
Cause: The communication stage of the PCB that processes the command from the room thermostat is failing.
Test the thermostat or check its wiring before blaming the PCB.
Fault codes Saunier Duval that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| 13 | Main PCB fault. | The main PCB is faulty or has defective internal/external connections; check the fuse and voltages of the PCB (230/5 V supplies) and connectors. If the issue persists with correct wiring and peripherals, replace the PCB. |
| 11 | No reception from the main PCB (MMI line). | Communication fault towards the PCB (receiver/MMI input of the PCB) or the cable between interface and PCB; check continuity of the MMI lead and 5 V on the interface. If the fault persists with a good cable/panel, the PCB is the cause. |
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.
Data sheet for the Saunier Duval PCB 0020076179.
- Catalogue reference
- 0020076179
- Uniclima internal SKU
- PETNOXF24
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 20 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.
- Manufacturer (logo on PCB)
- Honeywell
- Code
- Cd. 052.003579/03
- Transformer
- COMELIT T4880E116FP2, primary 230Vac 50/60Hz, secondary 16.5Vac 8VA
- Relays
- TAKAMISAWA JV24S-KT, 5A 30VDC / 250VAC, coil 24VDC
- Software review
- R155F
Frequently asked questions about the PCB 0020076179
Is the manufacturer of the PCB of the Supermaster Inox 24 SE Honeywell?
Is this PCB compatible with the Thema Nox F24?
What transformer and relays are installed on the PCB of the Master Inox 24 SE / 30 SE?
When should this PCB be replaced in a Supermicra 24 SE Ecoplus?
Spare parts related to Saunier Duval Supermaster
