Heat pumps · Error codes · Ecogenica Ltd.
F05Ecogenica Ltd. · Ecogenica outback ecogen290
F05 on an Ecogenica Ltd. Ecogenica outback ecogen290: Water not moving quickly enough around the system (low water flow)
Short answer
On an Ecogenica Ltd. heat pump, F05 means: Water not moving quickly enough around the system (low water flow). The manual does not say whether the heat pump stops. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Water not moving quickly enough around the system (low water flow).
Part involved: water flow / pump.
Likely causes:
- Dirty filters, air in the system or insufficient water pressure (e.g. after bleeding radiators).
Is it safe?
| Does the heat pump stop? | Not stated |
|---|---|
| Engineer needed? | Yes |
The manual does not say whether the heat pump stops.
Resetting itself: unknown.
What you can check
- Check the system pressure gauge; if you have recently bled radiators the pressure may be low - top up only if your installer has shown you how, and close the filling loop afterwards.
- Restart via the controller (off/on); if that fails, switch off at the isolator for 15 seconds and back on (per the Ecogenica homeowner manual).
- If the code remains, call your installer.
What the engineer will check
- Follow the manufacturer's troubleshooting steps for this code.
- Check the relevant sensor/switch wiring and connectors.
- Measure/replace the component or PCB as indicated.
Who to ask for: heating / hydraulic.
What you might notice
Sources
- Ecogenica Homeowner's Manual ↗ · page 11 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026