Problem Indication Probable cause Solutions
The room is too
warm
(or too cold in
cooling mode)
Corresponding loop is warm even after a
long period without heat call
An actuator does not close Contact the installer
Check that the actuator is correctly
installed
Replace the actuator
The floor is cold The room temperature OK but the floor
is cold
No heat demand from the underfloor
heating system
The room is heated by another heat
source
All rooms are cold
(or warm in cooling
mode)
Holiday mode
Icon displayed in the interface (if
installed, Base PRO only) or timer
(Base only)
Cancel Holiday mode
ECO mode for rooms in timer or digital
thermostat T-148
ECO mode Change ECO profile or assign another
profile to the room/system
Reduce the ECO setback value for the
thermostats
Reduce the General ECO setback value in
the interface (if installed, Base PRO only)
or timer (Base only)
Check the chiller (boiler) information and
operation mode of the thermostats
The system is in cooling (heating)
mode
Correct signal from external device needed
Disturbing noise
from the pump at
the same time and
day of the week
Change time for pump exercise (requires
Base PRO with interface I-147)
No communication Communication error
Software versions incompatible
Registration lost Contact the installer
Check registration status of the interface
and the controller (if installed, Base PRO
only)
Register the interface again (if installed,
Base PRO only)
Communication
failure between the
controllers
Communication error Registration to controller is lost Contact the installer
Check the registration status of the
interface and controller
Check the controller configuration
Check the wiring
Frozen display in
the interface
No response when pressing a button General failure Restart the interface (power off the
interface, wait about 10 seconds and
power it on again)
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