# Arotherm: Hot water starting outside schedule

**URL:** <https://community.openenergymonitor.org/t/arotherm-hot-water-starting-outside-schedule/28047>\
**Category:** Heatpump\
**Created:** [19 February 2025 13:19 UTC](https://community.openenergymonitor.org/t/arotherm-hot-water-starting-outside-schedule/28047 "2025-02-19T13:19:12Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![ectoplasmosis](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/e/ba8739/32.png) [@ectoplasmosis](https://community.openenergymonitor.org/u/ectoplasmosis)\
**Post date:** [20 February 2025 22:22 UTC](https://community.openenergymonitor.org/t/arotherm-hot-water-starting-outside-schedule/28047/4 "2025-02-20T22:22:42Z")

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Vaillant Arotherm defrost cycles always take heat from the space heating circuit only, never the DHW cylinder.

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_[View the full topic](https://community.openenergymonitor.org/t/arotherm-hot-water-starting-outside-schedule/28047)._