temporary-hot-water-stop-due-to-working-area-limits on an IVT Greenline HE: Ongoing hot water operation is aborted and replaced with heating operation. The warning can occur when the heat pump works close to the lowest permitted outdoor temperature
Short answer
On an IVT heat pump, temporary-hot-water-stop-due-to-working-area-limits means: Ongoing hot water operation is aborted and replaced with heating operation. The warning can occur when the heat pump works close to the lowest permitted outdoor temperature. The heat pump keeps running. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: Ongoing hot water operation is aborted and replaced with heating operation. The warning can occur when the heat pump works close to the lowest permitted outdoor temperature.
When it shows: Ongoing hot water operation is aborted and replaced with heating operation. The warning can occur when the heat pump works close to the lowest permitted outdoor temperature.
Is it safe?
| Does the heat pump stop? | No |
|---|---|
| Severity | Information only |
| Engineer needed? | Yes |
The heat pump keeps running.
What you can check
- Note the full alarm text including the component designation (e.g. E21.T6) - IVT asks for it when you contact the dealer.
What the engineer will check
- Investigate per the installer guide alarm description and operating data.
Who to ask for: heat pump engineer.
What you might notice
Sources
- User Guide Greenline HE C6-C11 E6-E17 (6 720 643 415 (2010/03)) ↗ · 6 720 643 415 (2010/03) · page 6 720 643 415 p.34 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026