P22 on a Technibel S.A.S. Technibel PHRIE / PHIE inverter monobloc air-to-water: Fan motor trouble - fan inverter protection activated or fan motor lock detected
Short answer
On a Technibel S.A.S. heat pump, P22 means: Fan motor trouble - fan inverter protection activated or fan motor lock detected. The heat pump stops until the fault clears or is reset. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: Fan motor trouble - fan inverter protection activated or fan motor lock detected.
Likely causes:
- Fan motor or A3 fan drive.
Is it safe?
| Does the heat pump stop? | Yes |
|---|---|
| Severity | Fault — needs a manual reset once the cause is fixed |
| Engineer needed? | Yes |
The heat pump stops until the fault clears or is reset.
Resetting itself: Manual reset: fault memorised by A2 board; reset by A2 RESET button (5 s), setting system control to OFF, or switching off power (power-off recommended for E15/E16/E20/L02/L08/L09/L10/L13/F29/F31).
What you can check
- Note the code/LED pattern and the model from the rating plate, then contact a heat pump/refrigeration engineer.
- Check the heat pump's breaker/isolator at the consumer unit is on.
- Check the outdoor unit is not blocked by leaves, snow or debris.
What the engineer will check
- Check A3 board.
- Check fan.
- §5.1.5.
Who to ask for: refrigeration / heat pump engineer.
Certification: Electrical competence for work inside the unit.
What you might notice
Sources
- Technibel PHRIE / PHIE inverter monoblock air to water heat pump, medium temperature, R410A - Service Manual (Jun. 2015, 10 12 211 - GB - 06) ↗ · 10 12 211 - GB - 06 · page 98 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026