Temperature out of range
If the room temperature exceeds or drops below the measuring range, i.e. above 50 °C or below 0 °C, the limiting temperatures blink, e.g., 0 °C or 50 °C.
In addition, the heating output is activated if the current setpoint is not set to Off, the thermostat is in heating mode and the temperature is below 0 °C.
For all other cases, no output is activated.
The thermostat resumes normal operation as soon as the temperature is within the measuring range.
Fault on display
A fault message "Erx" appears on the display in the event of hardware component failure or incorrect configuration:
Fault | Thermostat | Fault description | Troubleshooting |
---|---|---|---|
Internal sensor error | Er1 | Built-in sensor is broken. |
|
External / remote sensor error (RDF4..BN) | Er3 | External sensor is broken or connection to terminal malfunctions. |
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For fault status messages on BACnet, see Fault and alarm functions on BACnet.
For fault status messages on Modbus, see Fault and alarms function on Modbus.