Caleffi 6000 - Manual (Page 48)

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Relay status Operating status
Relay 2 closed (if no alarms, the relay is
normally open)
In safe mode. Mixing valve closes, i.e. only cold water enters.
Adjustment or disinfection or thermal shock is cancelled.
All alarm indications are cleared when the cause of the alarm has been removed.
Relay 2 open.
The alarm relay does not change status
All functions are ensured.
The return probe, if present, is used as a monitor only, therfore it does not generate any alarm if faulty.
Relay 2 closed
(if no alarms, the relay is normally open)
No disinfection, but adjustment continues and thermal shock is possible.
When the first button is pressed, the relay re-opens; indication remains on the display.
In all cases, all alarm indications are cleared when the cause of the alarm has been removed.
Relay 2 open.
The alarm relay does not change status
Disinfection failure does not generate any alarms
Relay 2 closed
(if no alarms, relay is normally open)
When the first button is pressed, the relay re-opens; indication remains on the display.
In all cases, all alarm indications are cleared when the cause of the alarm has been removed, in this case when the next
disinfection is successfully completed.
Note: if program 0 is set, any unresolved alarm indication due to incomplete disinfection is cleared.
Relay 2 closed
(if no alarms, the relay is normally open)
Alarms generated. The thermal shock function is potentially dangerous for users of the system.
When the first button is pressed, the relay re-opens; indication remains on the display. In all cases, all alarm indications
are cleared when the cause of the alarm has been removed.
In all cases, all alarm indications are cleared when the cause of the alarm has been removed, in this case when the
shock function has ended and the appliance begins adjustment again.
Relay 2 closed
(if no alarms, the relay is normally open)
If there is an electric supply failure, the back-up battery keeps the appliance’s internal clock running. In this situation, all
actuations are inhibited (the relays cannot be operated), and therefore all the adjustment, disinfection and thermal shock
programs. In this status, the appliance goes into Low Power mode in order to ensure maximum autonomy. The RS485
interface is not available.
When electric supply is restored, the blackout alarm (AL5) is stored in the log and the appliance resumes operation as
defined in the programs; there are no alarm indications.
However, if the electric supply failure lasts long enough for the battery to become discharged, there is a general reset
when electric supply is restored.
The printed circuit board has a button for hardware reset of the appliance. This button cannot be operated from the front
panel, but only by opening the door of the appliance and accessing the printed circuit board.
If the appliance is reset accidentally, or intentionally by pressing the special hidden button, or by interference (lightning,
etc.), the correct time and date settings are lost.
Settings made by the user are also lost and the factory values are reloaded for all parameters and settings.
Therefore, until the correct date and time are re-entered:
Appliance remains active in adjustment mode.
Disinfection is inhibited.
Thermal shock program is inhibited (but thermal shock can still be forced manually or remotely).
When the current date and time have been set (manually or remotely), the device comes out of the alarm condition and
resumes normal operation. All alarm indications are cleared.
Relay 2 open.
The alarm relay does not change status
The level of battery charge is periodically checked during operation, about every 24h, and charging is activated if
necessary. If the parameter readings are not within the specified range, it means the battery is damaged and must be
replaced. However, the appliance continues performing the specified programs, since a battery fault does not affect any
of the appliance functions (unless there is a blackout).
Note: battery replacement is an operation that cannot be performed by the user, it requires the appliance to be returned
to the factory.