Siemens QAA73.210 - Displaying Information; Fault Indication and Codes

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Siemens Room Unit for Boiler Control CE1U2283en
Building Technologies Handling 2015-09-16
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Displaying information
Various data can be displayed by pressing the info button.
Depending on the type of unit, configuration and operating state,
some of the info lines listed below may not appear.
Display:
Description Name Unit
- Boiler temperature BOILR °C
- Water pressure P BAR Bar
- Outside temperature EXT T °C
- Domestic hot water temperature DHW °C
- Domestic hot water temperature 2 DHW 2 °C
- Domestic hot water flow rate DHWFR l/min
- Relative boiler power PWR %
- Fan speed S FAN Rpm
- Exhaust temperature T EXH °C
- Return temperature RETUR °C
- Calculated flow temperature setpoint CH SP °C
During boiler operation it is
possible to see the actual
boiler modulation level on 4
different levels.
The room unit indicates faults that may have occurred in the unit itself or in the
system
If a fault is indicated 'ERROR' and the error code followed by the letter 'E' are
visualized in the display.
These faults cannot be reset. They will be cleared only when rectified.
Error code Description
60 Room sensor
88 Communication
95 Clock
127 Legionella setpoint not reached 1)
1) Can be reset by pressing OK button
Depending on the type of boiler control, the room unit also displays other error
codes. For detailed information, please refer to the technical documentation of the
boiler controller used.
Indication of faults
Other fault displays