Heat pumps · Error codes · Ferroli
BaFerroli · OMNIA LIFE M monobloc R290
Ba on a Ferroli OMNIA LIFE M monobloc R290: T4 out of operation range
Short answer
On a Ferroli heat pump, Ba means: T4 out of operation range. The manual does not say whether the heat pump stops. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: T4 out of operation range.
Is it safe?
| Does the heat pump stop? | Not stated |
|---|---|
| Engineer needed? | Yes |
The manual does not say whether the heat pump stops.
Manual reset: Manual 13.3: reset the unit by powering it off and on; if resetting is invalid contact the local dealer.
What you can check
- Check the consumer-unit breaker/isolator for the heat pump is on.
- Note the code shown on the user interface and contact the installer/Ferroli service.
- The manual says the safety can be reset by switching the unit OFF and back ON; if the code returns, do not keep resetting - call the installer.
What the engineer will check
- Diagnose per Ferroli/controller service information (Annex G gives description only; the wired controller shows the explanation).
Who to ask for: heat pump engineer (R290).
Certification: Electrical competence.
What you might notice
Sources
- OMNIA LIFE M - Installation, use and maintenance manual (IT-EN-ES-PT) ↗ · Cod. 3540001560 - Rev. 00 - 07/2024 · page 90 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026