Ferroli Gas boiler A56: Calibration fault

OFFICIAL SOURCE

What does this error code mean?

Calibration fault. Applicability is limited to the manufacturer-documented model / series, not all devices of this brand.

Documented by manufacturer for the listed model family

Individual model identifier must still be checked against your appliance label.

SAFE USER CHECKS

1. Record error A56 and the complete model plate. This description only applies to BLUEHELIX TECH RRT 24 H.
2. If you smell gas or flue fumes, or a carbon monoxide alarm sounds, avoid switches and controls; leave the area and call emergency assistance from outside.
3. The manufacturer describes this code as “calibration fault”. Do not open the casing or remove any components to investigate.
4. Note external display warnings, visible pressure indication and whether heating has stopped. Do not reset or refill unless your exact manual permits it.
5. If A56 remains, share the model and symptoms with authorized service for qualified diagnosis.

MODEL SCOPE

BLUEHELIX TECH RRT 24 H

Codes and hardware can vary by model, production year and market.

PROFESSIONAL SERVICE

All gas and electrical repairs require qualified service.

After professional checks, confirm that the error no longer returns during normal use. Report any repeat warning to service.

Documented page: 191–192.