Building Technologies
RXT20.1 – Service terminal
CA2N3851en_02 / 12.01.2007
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If the service terminal is connected to a DESIGO RXB / RXC controller, the start-up rou-
tine is as follows:
Step Display Description
1
All segments activated for approximately 5 s.
2
Cursor fields may be activated for max. 10 s.* (approx.
3 – 5 minutes * on controller power up, e.g. after operation of
service pin)
* Varies according to the DESIGO RX application
3
Controller ready for operation (“run”
and cycling cursor)
Display Description
Normal operation between controller and room unit
•
Display reads “run”
The room unit with the set address (see Address switch) communi-
cates with the controller. The “run” display can be overwritten by
other displays (see Additional information).
•
Cycling cursor, 1 s pulse
The controller communicates (or tries to communicate).
no communication, or controller not ready
•
Static display in all cursor fields
There is no room unit connected or the controller is not ready for
operation, but the power supply is working (controller in start-up
phase, or no application loaded, or controller not configured).
Faulty controller:
•
No display
The power supply is not connected or the controller is faulty.
Display Description
Wink command
•
Controller type displayed for 64 s (e.g. RXC30.1: “r.30”
or RXB21.1: "r.21")
Press the right key (Function key 2) to switch back to the original
display before expiry of the 64 s. The display of the wink command
takes priority over all other display options on the service terminal.
The wink command can be used during commissioning to identify
the currently addressed controller.
–
RXC: see RXT10 user manual, document CA110338
–
RXB: see ETS user manual
Room temperature, operation mode
•
Room temperature in °C or °F (see "Function key 2")
The displayed operation mode (Stand-by, Auto, fan speed) comes
from the room unit.
The same applies to the displayed room temperature, there is no tem-
perature sensor in the service terminal itself.
LCD display
Response at start-up
Additional information
