060 on an iDM Energiesysteme TERRA SW: Heat source temperature: The measured heat source outlet temperature is below the minimum heat source temperature
Short answer
On an iDM Energiesysteme heat pump, 060 means: Heat source temperature: The measured heat source outlet temperature is below the minimum heat source temperature. 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: Heat source temperature: The measured heat source outlet temperature is below the minimum heat source temperature.
Part involved: Heat source temperature.
When it shows: The measured heat source outlet temperature is below the minimum heat source temperature.
Is it safe?
| Does the heat pump stop? | Yes |
|---|---|
| Severity | Fault — clears by itself when the condition goes |
| Engineer needed? | Yes |
The heat pump stops until the fault clears or is reset.
What you can check
- Note the fault number and text shown after tapping the fault symbol on the Navigator display. Look at the brine/heat-source expansion vessel or pressure gauge: the fluid level should be visible (user guide check). Do not refill or open the ground-loop circuit yourself - call the installer. If the fault recurs several times, contact iDM customer service/your installer.
What the engineer will check
- Diagnose per iDM service documentation for the unit (not obtained): check the monitored circuit/component named in the fault.
Who to ask for: heat pump engineer.
What you might notice
Sources
- IDM Wärmepumpen mit Navigatorregelung 2.0 - Bedienungsanleitung (812152 Rev.3) ↗ · 812152 Rev.3 · page p.71 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026