Ariston PCB Transformer Genus 27 Bffi Ref. 952930
When you open the hot water tap, the Ariston PCB Transformer Genus 27 Bffi Ref. 952930 activates to generate the spark that ignites the burner of your boiler. If this part fails, you will notice that the boiler attempts to start unsuccessfully, remaining in lockout. This board is compatible with models such as the GENUS 27 BFFI GPL, CODEX 27 BFFI GPL, and RUGIADA 23 M CSI MET, among others. Replacement is necessary when errors such as A 37, A 39, or A 40 occur, indicating problems with the PCB.
VAT included
Consult via WhatsAppAriston boilers compatible with reference 952930
Ignition transformer with reference 952930. 18 verified compatibilities: GENUS 27 BFFI GPL and GENUS 27 BFFI MET.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Ariston GENUS 27 BFFI LPG | Genus | Contrasted |
| Ariston GENUS 27 BFFI MET | Genus | Contrasted |
| Ariston GENUS 23 B FFI LPG | Genus | Contrasted |
| Ariston GENUS 23 B FFI MET | Genus | Contrasted |
| Ariston GENUS ESTERNA 23 M FFI LPG | Genus | Contrasted |
| Ariston GENUS ESTERNA 23 M FFI MET | Genus | Contrasted |
| Ariston CODEX 23 B FFI MET | Codex | Contrasted |
| Ariston CODEX 23 BFFI LPG | Codex | Contrasted |
| Ariston CODEX 27 BFFI LPG | Codex | Contrasted |
| Ariston CODEX 27 BFFI MET | Codex | Contrasted |
| Ariston ERMETICA 23 M FFI LPG | Ermetica | Contrasted |
| Ariston ERMETICA 23 M FFI MET | Ermetica | Contrasted |
| Ariston ES B 23 BCSI LPG | IS B | Contrasted |
| Ariston ES B 23 BCSI MET | IS B | Contrasted |
| Ariston ES B 27 BCSI LPG | IS B | Contrasted |
| Ariston ES B 27 BCSI MET | IS B | Contrasted |
| Ariston RUGIADA 23 M CSI LPG | Dew | Contrasted |
| Ariston RUGIADA 23 M CSI MET | Dew | 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. 952930 is the part for your boiler
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 952930. 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 and faults that the ignition transformer 952930 resolves.
The ignition transformer generates the high voltage for the spark of the electrodes. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler tries to ignite, the cycle can be heard, but the spark does not trigger.
Cause: The transformer increases the voltage to generate the ignition spark; if it fails, the cycle starts but there is no spark.
Check the ignition electrode and its high voltage cable: a dirty or misaligned electrode can cause the same symptom.
- 02
The pump or the fan turns on and off by itself intermittently.
Cause: The relays on the PCB supply power to those components; if they are worn out, they connect and disconnect without being prompted.
Check if the relay click matches the actual cut-off of the pump or the fan before replacing the PCB.
- 03
The boiler locks out due to ignition failure after several consecutive attempts.
Cause: If there is no correct voltage in the ignition circuit, the control board does not detect the flame and locks the unit for safety.
Check that the flame is properly detected by the ionization electrode before replacing the PCB.
- 04
A burnt smell or dark marks are noticeable on the PCB near the transformer.
Cause: A overheated or short-circuited transformer leaves visible marks on its casing or in the welding area.
With the boiler unplugged, inspect that area with a flashlight before deciding on the replacement.
Fault codes for Ariston that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| A 37 | CPU fault | Internal CPU fault in the main PCB (EA FFI, ref. 952930). Check 230V/5V voltages and grounds; if everything is correct and the error reappears after reset, replace the PCB. |
| A 39 | PCB fault 1 | Self-diagnosis detects an internal fault in the main PCB. Check regulated 5V/12V and connectors; if the wiring/power supply is fine and the fault persists after reset, the PCB (952930) is damaged. |
| A 40 | PCB fault 2 | Second level internal fault in the main PCB. Check for stable voltages and continuity of connectors/bus; if everything is correct and the error returns, replace the PCB (952930). |
| E 37 | Communication problem with the main PCB | Loss of communication with the main PCB (display/interface ↔ main PCB). Check harness/cable T1, connectors U1 and 5V data; if the wiring is correct, the PCB (952930) is the probable 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.
Ignition transformer data sheet Ariston 952930
- Catalogue reference
- 952930
- Brand
- Ariston
- Type of part
- Transformers
- Units in stock
- 7 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- Integrated transformer model
- 86/7 240W
- Mounted relays (x2)
- OMRON G6RN-1, 10A 250VAC, coil 12VDC, contact 8A 250V~, MADE IN MALAYSIA, batch 0221W1
- Fuses
- FUSE 5x20 (x2), FAST FUSE 2A
- RADIOHM component
- RADIOHM 42V32 2001, 2A/250V~, 2x10mH
- Silkscreened brands on the PCB
- 4129 0030 / 925010290501 3 / 9297E074
Frequently asked questions about the ignition transformer 952930
Is Ref. 952930 just the transformer or the complete PCB of the Ariston Genus 27 Bffi?
Does this PCB work for an Ariston Codex 23 Bffi GPL?
What transformer is integrated into the PCB of the Ariston Genus 27 Bffi?
What relays are installed on the transformer board of the Ariston Ermetica 23 Mffi?
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