Hoval BIC 960 - 6 Monitoring of Warnings And;Or Faults

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MONITORING OF WARNINGS AND/OR FAULTS
6. Monitoring of warnings and/or faults
If a warning or a fault (blocking or lock-out) occurs, a ashing code appears on the display of the heating controller,
alternating with the normal display. This code provides information about the cause. The following codes appear on
the display:
Heat gener. X:xx” W:xx Warnings
B:xx Blockings
E:xx Lock-outs
Warnings can lead to restricted boiler operation (e.g. capacity limits), and blockings always cause a shut off at the
boi ler. Both signals are automatically reset as soon as the cause of the error is eliminated. The boi ler can then re-
sume operation. Faults that cause a lock-out must be acknowledged using the reset key, in order to restart the boiler,
provided that the cause of the fault has been rectied. Faults on the automatic ring device are acknowledged using
the reset key under the ip cover on the front of the heating controller.
Warnings:
W:01 = Water pressure too low
If water pressure falls below the water pressure warning level set under Parameter 17, boiler capacity is reduced to
the capacity set under Parameter 24.
W:02 = Ionisation too low
Appears if the ionisation warning limit set under Parameter 25 is under run.
Blockings:
B:03 = Gas pressure too low/ Gas pressure switch defective/ external blockings
(e.g.: condensate maximum limit, emergency off etc.)
Appears when the gas pressure is too low and there is a demand at the boiler. Blockings with an external cause also
cause the same error code to be displayed (X9-1/X9-2).
B:04 = Main gas valve (possibly LPG- valve)/ Heating room fan
Appears during the waiting time (Parameter 39) until the burner starts.
Blocking is no longer shown as of BIC 960 V.3.
B:05 = Water pressure outside of limits
Appears if the water pressure exceeds or falls below the set limits
(min: Parameter 19, max: Parameter 21). A blocking is caused.
B:06 = Safety limit thermostat activated
If the safety limit thermostat is activated, this causes immediate blocking, which changes to a lock-out if activated for
more than 5 seconds.
B:07 = Flue gas temperature too high
Appears if the ue gas temperature set under Parameter 14 is exceeded.
B:08 = Boiler temperature too high
Appears if the boiler temperature limit set under Parameter 1 is exceeded.