SENSOR on a Dimplex WPM heat pump manager platform: Sensor fault (text-display WPM): breakage or short-circuit of a sensor. Depending on system type: return flow sensor, sensor limit value, hot water sensor, flow sensor, 2nd/3rd heating circuit sensor, external sensor, room temperature sensor, additional return flow sensor, hot gas sensor, high-pressure sensor, low-pressure sensor (and indoor air temperature sensor on WPM 2006 plus)
Short answer
On a Dimplex heat pump, SENSOR means: Sensor fault (text-display WPM): breakage or short-circuit of a sensor. Depending on system type: return flow sensor, sensor limit value, hot water sensor, flow sensor, 2nd/3rd heating circuit sensor, external sensor, room temperature sensor, additional return flow sensor, hot gas sensor, high-pressure sensor, low-pressure sensor (and indoor air temperature sensor on WPM 2006 plus). The heat pump keeps running with some functions stopped. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: Sensor fault (text-display WPM): breakage or short-circuit of a sensor. Depending on system type: return flow sensor, sensor limit value, hot water sensor, flow sensor, 2nd/3rd heating circuit sensor, external sensor, room temperature sensor, additional return flow sensor, hot gas sensor, high-pressure sensor, low-pressure sensor (and indoor air temperature sensor on WPM 2006 plus).
Part involved: Named sensor.
Likely causes:
- Sensor cable break.
- Sensor short-circuit.
Is it safe?
| Does the heat pump stop? | Partly |
|---|---|
| Severity | Fault — needs a manual reset once the cause is fixed |
| Engineer needed? | Yes |
The heat pump keeps running with some functions stopped.
Resetting itself: Press Esc to acknowledge after rectification.
Manual reset: Esc.
What you can check
- Note the sensor named on the display, the heat pump type plate model and WPM software version and inform your local technician.
What the engineer will check
- Check named sensor wiring and resistance.
Who to ask for: heat pump service engineer.
What you might notice
Sources
- Dimplex WPM EconPlus / WPM EconR heat pump manager - Operating instructions for users (Order no. 452114.66.57, FD 8902) ↗ · 452114.66.57 FD 8902 · page EN-16 (ManualsLib p.38) · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026