# MyHeatpump app: Automated detection of heat meter air error

**URL:** <https://community.openenergymonitor.org/t/myheatpump-app-automated-detection-of-heat-meter-air-error/26690>\
**Category:** Emoncms\
**Created:** [12 September 2024 13:12 UTC](https://community.openenergymonitor.org/t/myheatpump-app-automated-detection-of-heat-meter-air-error/26690 "2024-09-12T13:12:51Z")\
**Posts on this page:** 1\
**Showing post:** 26

<div class="post-metadata">

**Author:** ![Timbones](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/timbones/32/20308_2.png) [@Timbones](https://community.openenergymonitor.org/u/Timbones)\
**Post date:** [23 September 2024 08:43 UTC](https://community.openenergymonitor.org/t/myheatpump-app-automated-detection-of-heat-meter-air-error/26690/26 "2024-09-23T08:43:17Z")

</div>

I posted these in [another thread](https://community.openenergymonitor.org/t/heatpumpmonitor-immersion-heater-vs-system-boundaries/26730/2):

> Hovering over the Hx value shows the following tooltips: (for air-source)
> 
> - H1 = Heat pump compressor only
> - H2 = Outside unit only
> - H3 = Outside unit + Booster and immersion heater (if installed & used)
> - H4 = Outside unit + Booster and immersion heater + Central heating pumps & fans
> 
> _If Legionella is disabled then it will assume immersion isn’t used and bump up to higher boundary._

If you don’t have “Includes booster and immersion heater” ticked, and haven’t disabled legionella, then the system is considered to be **H2**.

---

_[View the full topic](https://community.openenergymonitor.org/t/myheatpump-app-automated-detection-of-heat-meter-air-error/26690)._