Riello Vokera VIBE MAX User Instructions page 29

5.27 KEYBOARD LOCK FUNCTION
To lock the keys
5 0 8
.
+
press again
to unlock
If there is a fault, key 2 remains active to allow the alarm to
be reset.
5.28 ALARM HISTORY
The alarm history is active with parameter 701=1 (SERVICE).
Alarms can be viewed:
- info menu (from I039 to I043), in chronological order, from
the oldest to the most recent, up to a maximum of 5.
- on OT+ remote control, if connected.
When an alarm occurs several times in a row, it is stored only
once.
To reset the alarm, follow the instructions provided in para-
graph "5.26 Safety stop".
10
A
5.29 REPLACING THE BOARD
If the main PCB is replaced, it may be necessary to repro-
gram the configuration parameters. In this case, refer to the
parameters table to see the board default values, the factory
set values, and the personalised values. The parameters that
must be checked and reset if necessary after replacing the
board are: 301 - 302 (SERVICE) - 306 - 307 - 308 - 309 - 310
- 708.
b
708 (remember to set the paramter to 0).
L c o
>2 sec
Res
> 2 sec
5.30 TEMPORARY SWITCH-OFF
In the event of temporary absences (weekends, short breaks,
etc.) set the status of the boiler to OFF.
---
While the electrical supply and the fuel supply remain active,
the boiler is protected by the systems:
ƒ heating anti-freeze: this function is activated if the tem-
perature measured by the flow sensor drops below 5°C. A
heat request is generated in this phase, with burner ignition
at the minimum output (then maintained until the delivery
water temperature reaches 35°C); the display shows AF1
ƒ DHW anti-freeze: this function is activated if the tempera-
ture measured by the domestic hot water probe drops be-
low 5°C. A heat request is generated in this phase, with
burner ignition at the minimum output (then maintained
until the delivery water temperature reaches 55°C); the dis-
play shows AF2
ƒ circulator anti-locking: The circulator activates every 24
hours of stop for 30 seconds.
5.31 SWITCHING OFF FOR LENGTHY
PERIODS
If the boiler is not used for a long time, the following operations
must be carried out:
ƒ set the OFF status
ƒ isolate the appliance from the electrical supply
ƒ turn off the fuel and water taps of the heating and domestic
hot water system.
In this case, the anti-freeze and anti-blocking systems are deacti-
vated. Drain the heating and domestic water system if there is any
risk of freezing.
A F 1
A F 2
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