Heat pumps · Error codes · Clivet
P9Clivet · Edge EVO 2.0 EXC (WiSAN-YME 1 S)
P9 on a Clivet Edge EVO 2.0 EXC: Fan protection
Short answer
On a Clivet heat pump, P9 means: Fan protection. 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: Fan protection.
Likely causes:
- See Clivet WiSAN-YME manual corrective-action column for this code (not reliably transcribed).
Is it safe?
| Does the heat pump stop? | Not stated |
|---|---|
| Engineer needed? | Yes |
The manual does not say whether the heat pump stops.
What you can check
- Read and note the exact code shown on the controller display.
- Check the heat pump's breaker/isolator at the consumer unit is on.
- Check the outdoor unit is not blocked by leaves, debris or snow and has clear space around it.
- Restart once via the controller (OFF then ON) as the manual allows; if the code returns, call an engineer.
What the engineer will check
- See Clivet WiSAN-YME manual corrective-action column for this code (not reliably transcribed).
Sources
- CLIVET WiSAN-YME 1 S 2.1-14.1 Manual for Installation, Use and Maintenance, M0PE00002-00 10-22 (ManualsLib copy) ↗ · M0PE00002-00 · page 171 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026