Further Functions; Monitoring Functions - Honeywell TheraPro HR90 Instruction Manual

10. Further functions

Monitoring functions

Window function
If you open a window causing the temperature to drop,
the radiator controller closes the radiator valve in order
to save energy.
is displayed.
window
When the temperature rises again, but at the latest after
the set period (factory setting: 30 minutes), the radiator
controller opens the radiator valve again.
You can also open the radiator valve beforehand by
pressing the AUTO button or turning the adjustment
dial.
The sensitivity of the radiator controller to a temperature
drop or temperature rise can be set, see Section 9,
Parameters 5 to 7.
If a window contact is connected, the window function
reacts directly to the opening and closing of the window,
see Parameter 17.
Valve protection
If the radiator valve has not been opened once
completely within a period of 2 weeks, a self-test (forced
operation) is carried out. The radiator controller opens
the radiator valve briefly on the subsequent Monday
(factory setting) in order to prevent seizing.
is displayed.
cycl
The day for the valve protection can be set in
Parameter 16.
Frost protection
If the temperature drops below 5 °C, the radiator
controller opens the radiator valve until the temperature
rises above 6 °C again. This prevents the heating system
from freezing up.
is displayed.
frost
i
The heating must be switched on to ensure the frost
protection function.
Manual override
If you have switched off the central heating system
in summer and do not want to waste the batteries of
the radiator controller, you can close the radiator valve
continuously.
Closing the valve
1. Press the button AUTO/ECO/MANU until
is displayed.
2. Turn the adjustment dial counter-clockwise until
is displayed.
The radiator valve now remains closed. The valve and
frost protection functions continue to be active.
Opening the valve
fUse the AUTO/ECO/MANU button to change to
automatic mode.
– or –
fSet the desired temperature in manual operation.
Child-proofing / Operation lock
You can block the radiator controller to protect it against
unauthorized operation:
fKeep the AUTO/ECO/MANU and PROG buttons
pressed simultaneously for at least 3 seconds.
The symbol is displayed.
i
The same key combination is used to release the
radiator controller again for operation.
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