Heat pumps · Error codes · Atlantic
ODU3-15FAtlantic
ODU3-15F on an Atlantic heat pump: Compressor start up error (permanent stoppage)
Short answer
On an Atlantic heat pump, ODU3-15F means: Compressor start up error (permanent stoppage). The heat pump stops until the fault clears or is reset. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 2 sources
What it means
The manual says: Compressor start up error (permanent stoppage).
Likely causes:
- Compressor start/position detection or motor control fault.
Is it safe?
| Does the heat pump stop? | Yes |
|---|---|
| Severity | Safety lockout |
| Engineer needed? | Yes |
The heat pump stops until the fault clears or is reset.
What you can check
- Check the heat pump isolator and consumer-unit breakers are on (do not open any casing).
- Note the error number/LED pattern shown and give it to your installer.
What the engineer will check
- Check compressor wiring, windings and inverter/IPM board.
Who to ask for: refrigeration / electrical.
Certification: Electrical competence; F-gas if compressor replacement.
Sources
- alféa excellia duo Maintenance Document (U0546279_1738_EN_16) ↗ · U0546279_1738_EN_16 · page 73 · Reviewed 23 September 2026
- alféa hybrid duo Installation and commissioning instructions (doc 1440-13) ↗ · 1440-13 · page 67 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026