Display Of A Current Fault - Worcester Greenstar Sense I Installation And Operation Manual

Troubleshooting
6.2

Display of a current fault

If a fault occurs the display shows the respective fault code and the 3 digit sub code.
In case of 4 digit sub codes, after displaying the fault code the display shows the first
2 digits and then the last 2 digits of the sub code (e. g.: A21 ... 10 ... 01 ... A21 ... 10
...).
Possible causes and
assistance from the contractor
A21 1001 Sense I in heating circuit 1 incorrectly configured.
▶ If e.g. a Sense II is installed, set A.1 = Fb (room thermostat) at
▶ If a Greenstar Wiring Center is installed and recognised, set
▶ If no higher-level control and only one heating circuit is
A22 1001 BUS signal from the higher-level control for remote heating control
... is missing (A22: heating circuit 2, ..., A24: heating circuit 4).
A24
▶ E.g. install Sense II.
▶ Make BUS connection.
A61 1081 Sense I incorrectly configured (A61/1081: heating circuit 1, ...,
... ... A64/1084: heating circuit 4).
A64 1084
▶ Set A.1 = Fb (room thermostat).
A61 3061 Sense I incorrectly configured (A61/3061: heating circuit 1, ...,
... ... A64/3064: heating circuit 4).
A64 3064
▶ If e.g. a Sense II is installed, set A.1 = Fb (room thermostat) at
▶ If a Greenstar Wiring Center is installed and recognised, set
▶ If no higher-level user interface and only one heating circuit is
16
the Sense I.
A.1 = SC (zone controller).
installed, set A.1 = CO (controller).
the Sense I.
A.1 = SC (zone controller).
installed, set A.1 = CO (controller).
6 720 648 748 (2014/03)