Ferroli Gas boiler F34: Mains voltage below 170V

OFFICIAL SOURCE

What does this error code mean?

Mains voltage below 170V. 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 F34 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 “mains voltage below 170v”. Do not open the casing or remove any components to investigate.
4. Observe whether other appliances show voltage problems. Do not open sockets, wiring or control boards.
5. If F34 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.