Heat pumps · Error codes · Clivet
P5Clivet
P5 on a Clivet heat pump: High temperature difference protection (plate heat exchanger)
Short answer
On a Clivet heat pump, P5 means: High temperature difference protection (plate heat exchanger). The manual does not say whether the heat pump stops. An engineer is needed to fix the cause. The wording differs by model range — each is shown below.
Reviewed 23 September 2026 · 2 sources
What it means
On the Edge EVO 2.0 EXC (WiSAN-YME 1 S)
The manual says: High temperature difference protection (plate heat exchanger).
Likely causes:
- See Clivet WiSAN-YME manual corrective-action column for this code (not reliably transcribed).
On the Sphera EVO 2.0 (MiSAN-YEE split + SQKN-YEE indoor)
The manual says: High temperature difference between water side heat exchanger water inlet and outlet temperatures protection.
Likely causes:
- See Sphera EVO 2.0 service manual troubleshooting (p.49-105) for this code.
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.
- Read the system pressure gauge and report the reading to your engineer (manuals ask for more than 1 bar when cold).
- Check the filling loop valves are closed.
- Restart once via the controller (OFF then ON) as the manual allows; if the code returns, call an engineer.
What the engineer will check
On the Edge EVO 2.0 EXC (WiSAN-YME 1 S)
- See Clivet WiSAN-YME manual corrective-action column for this code (not reliably transcribed).
On the Sphera EVO 2.0 (MiSAN-YEE split + SQKN-YEE indoor)
- See Sphera EVO 2.0 service manual troubleshooting (p.49-105) for this code.
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 170 · Reviewed 23 September 2026
- CLIVET SPHERA EVO 2.0 Service Manual SM21G011GB-00 (27-03-2023) (ManualsLib copy) ↗ · SM21G011GB-00 · page 48 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026