ESI ESRTP4 - Frost Protection

7. To cancel the Holiday Mode setting or to exit the function
at any time, press the Home button to revert back to
Run mode.
3.8 Frost Protection
This function is provided as an option if it is desirable to turn
the heating off permanently. It is usually used in summer.
To set the Frost Protection Mode:
1. Switch the slider to OFF to enter the Frost Protection
Mode. The display will show the frost protection
snowflake symbol and the set temperature will be 5°C.
2. Switch the slider to AUTO to exit Frost Protection Mode
and revert to AUTO mode.
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