214 on a NIBE heat pump: Inverter error type II (temporary): Temporary inverter fault type II
Short answer
On a NIBE heat pump, 214 means: Inverter error type II (temporary): Temporary inverter fault type II. The heat pump keeps running with some functions stopped.
Reviewed 23 September 2026 · 1 source
What it means
The manuals for this range word it in different ways:
- Inverter error type II (temporary): Temporary inverter fault type II.
- High HTF in: Brine has reached set maximum temperature.
Part involved: inverter and compressor drive; brine pump, brine sensors, level monitor.
When it shows: Temporary inverter fault type II Brine has reached set maximum temperature.
Is it safe?
| Does the heat pump stop? | Partly |
|---|---|
| Severity | Fault — clears by itself when the condition goes |
The heat pump keeps running with some functions stopped.
Resetting itself: yes - Compressor blocked; after 1 h or 3 times in 2 h becomes alarm 204.
Manual reset: Reset from the controller alarm menu ('reset alarm' / 'Reset alarm and try again'); alarm recurs if the cause remains.
What you can check
- Read the alarm text and the 'info/action' help on the controller display (VVM/SMO or S-series smartguide). NIBE's manuals let the homeowner select 'reset alarm' ('Reset alarm and try again' on S-series); if the lamp returns to normal the alarm has cleared. If it comes back, do not keep resetting: select 'aid mode' ('Auxiliary operation' on S-series) if offered, so any electric additional heat keeps heat/hot water going, and contact your installer. Check the heat pump and indoor unit breakers/RCD at the consumer unit are on; if one trips again, leave it off and call an engineer.
- Read the alarm text and the 'info/action' help on the controller display (VVM/SMO or S-series smartguide). NIBE's manuals let the homeowner select 'reset alarm' ('Reset alarm and try again' on S-series); if the lamp returns to normal the alarm has cleared. If it comes back, do not keep resetting: select 'aid mode' ('Auxiliary operation' on S-series) if offered, so any electric additional heat keeps heat/hot water going, and contact your installer.
What the engineer will check
- Check main and group fuses and cable connections, supply voltage under load, inverter terminal blocks, inverter mounting/cooling paste, compressor wiring and compressor.
- Check brine circuit: bleeding, brine pump, brine freezing point/concentration, brine sensors and level monitor/pressure switch; look for brine leaks.
Who to ask for: NIBE-trained heat pump engineer and/or qualified electrician; NIBE-trained heat pump installer (NIBE PRO / VIP).
Certification: Electrical work to BS 7671 by a competent electrician (notifiable work under Part P in England & Wales); None specific beyond competent heat pump installer; electrical work to BS 7671.
What you might notice
Sources
- ALARM LIST - NIBE products with Emmy display, Version 1747-1 (updated 2017-11-23) ↗ · 1747-1 · page 6 · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026