EQJW145:
Heating controller
Faults
7010015003 A
79
© Fr. Sauter AG
7 Faults
Before you call a heating specialist, check: electrical fuses, main installation
switch, burner function, heat medium pump, valve, fault display, time and day
of the week for the EQJW 145.
7.1 Displaying faults
An operating fault is shown on the display by the flashing fault symbol (see
section 2.5). The 'Error' message is shown. Push the input knob to open the
error level. In some cases, you can poll to check for multiple faults by turning
the input knob. As long as an acute operating fault is present, the error
message is kept in the display loop, even if it is not opened by pushing the
input knob. The error is shown in the error level according to the list below.
In the first three minutes after you switch the controller on, evaluation and
display of faults is suppressed to wait until other parts of the installation are
switched on.
7.1.1 Error list
Err 1 Sensor failure TF
Err 2 Sensor failure TA
Err 3 Sensor failure TR
Err 4 Sensor failure TRF
Err 5 Sensor failure TW2,TRF2
Err 6 Sensor failure TW1, TF2
Err 10 Error message received via device bus
Err 11 Prohibited access via modem
Tab. 10: Error list
7.1.2 Device status
The device status register contains the information on faults that are present
according to the error list, in coded form. The register can be read with the
help of the service parameters, the communication parameters or via the
Modbus. If a fault message is sent via SMS or Modbus, the fault is notified in
the form of the device status.
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