What does fault code 05 mean on a Beretta?

Name: PCB Beretta Super Exclusive MIX 26 C S I EV Ref. 10021888
Brand: Beretta
SKU: PEBSEMIX26
Price: 105 EUR
Availability: OutOfStock

Anomaly in the communication line between boiler and remote panel (RC05). The main PCB (family MC12/MC13, ref. 10021888) powers and manages the RC05 bus; if its communication/power circuit (terminals S and −) fails, the link is lost and 05 appears. Verify L–N polarity, continuity of the RC05 cable, and voltage/signal at S/−; if the cable and panel are correct and there is no communication/power from the PCB, the PCB is faulty.

RefurbishedBeretta PCBs (control boards)

PCB Beretta Super Exclusive MIX 26 C S I EV Ref. 10021888

105 €VAT included

PCB (control board): refurbished spare part that controls the ignition, modulation, and safety features of the boiler. Useful if the boiler does not ignite, locks up, or the display is unresponsive. Reference 10021888. Includes a one-year warranty and delivery within 2–4 working days in the EU.

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Delivery in 2–4 working days

1-year warranty

14-day return

Technical support

Key Data

Reference: 10021888
Brand: Beretta
Type of part: PCBs (control boards)
Available units: 0 units in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

Code	What does it mean?	Cause and diagnosis (this part)
05	Anomaly in the communication line between the boiler and remote panel (RC05).	The main PCB (family MC12/MC13, ref. 10021888) powers and manages the RC05 bus; if its communication/power circuit (terminals S and −) fails, the link is lost and 05 appears. Verify L–N polarity, continuity of the RC05 cable, and voltage/signal at S/−; if the cable and panel are correct and there is no communication/power from the PCB, the PCB is faulty.

PCB Beretta Super Exclusive MIX 26 C S I EV Ref. 10021888

Key Data

Spare Parts Related Boiler Super Exclusive MIX 26 C S I EV