2928
Thermostat with display
Installer manual
7.3 In case of error
When the display shows the “Er” symbol followed by a number, the thermostat is indicating an
error condition.
Below is a list of possible errors:
With errors “Er1”, “Er2”, and “Er3” the thermostat keeps the current mode and the displayed error
condition can be reset (by pressing any key). If the error condition persists, after 15 minutes the
error screen will reappear.
With errors “Er4”, and “Er5” the thermostat switches OFF, and all the actions that can normally be
performed by the user, like the pressure of the keys, are disabled.
Below is an example of an error screen (*).
Er1 No response from pump.
Er2 No response from actuator.
Er3 No response from slave probe.
Er4 Temperature sensor fault.
Er5 Internal error device.
(*) NOTE: if ER4 or a temperature very different from the one felt are displayed, or after the first
installation, wait at least 5 hours before checking the operation again, or carrying out
the calibration procedure.
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