Heat pumps · Error codes · iDM Energiesysteme
036iDM Energiesysteme · TERRA SW (2013)
036 on an iDM Energiesysteme TERRA SW: Electric heating element overheating: Safety temperature limiter (STB) of the electric heater has tripped
Short answer
On an iDM Energiesysteme heat pump, 036 means: Electric heating element overheating: Safety temperature limiter (STB) of the electric heater has tripped. 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: Electric heating element overheating: Safety temperature limiter (STB) of the electric heater has tripped.
Part involved: Electric heating element overheating.
When it shows: Safety temperature limiter (STB) of the electric heater has tripped.
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.
What you can check
- Note the fault number and text shown after tapping the fault symbol on the Navigator display. 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.70 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026