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Siemens Building Technologies / HVAC Products CE1B3131x2-en 74 319 0346 0 a 19.11.2004
A fault has occurred
If a fault occurred in the plant, it will appear on the dis-
play; in addition, the LED inside the
button will flash or
will be on. Proceed as follows:
LED flashes:
1. Press the button to unlock.
2. If the LED keeps flashing, the fault still exists or the
button must be pressed again to unlock.
LED lit:
1. Rectify the fault.
2. If the LED is still lit, the
button must be pressed
again to unlock.
Unlocking is possible only after the cause of fault has
been removed.
In the event of fault, refer to the tips given on page 24.
If you cannot rectify the fault, contact your heating engi-
neer.
Additional information about the display of faults:
Menu Faults current
Here, you can see which faults are currently present.
The following information about each fault is displayed:
• The cause (e.g. pump 1)
• The fault number (important for the heating engineer)
• The date and the time of day the fault first occurred
Menu Fault history
Here, each of the last 10 faults will be listed. The infor-
mation given is the same as that provided with current
faults.
Menu Fault status signal bus
If your plant includes several interconnected devices,
faults of other controllers will be displayed on your con-
troller.
Quick display of faults
If you keep the ESC button depressed for 2 seconds, the
current fault will be displayed.
Path: Main menu > Faults
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