Fault information
If a fault occurs (e.g. digital fault input, dew point, etc.) then a fault will be displayed on the thermostat and the fault information can be read via Modbus.
Priority of alarms
If more than one alarms occur at the same time, the alarm with the highest priority will be available via Modbus while the thermostat will display all active alarms alternatively.
The table below shows the error code and default alarm texts.
| Thermostat | Fault information on Modbus | ||
|---|---|---|---|
| Priority | Fault | Display | Default fault text |
| - | No fault |
|
No fault |
| 1 | Condensation | Condensation in the room | |
| 2 | External fault input X1 1) |
|
Fault input 1 |
| 3 | External fault input X2 1) |
|
Fault input 2 |
| 4 | Clean filter reminder |
|
Dirty filter |
1) RDF302.B does not have inputs X1 and X2.
Default alarm texts are stored in the thermostat’s non-volatile memory and can be adjusted using the Modbus commissioning tool.