Innova 3in1 5M Installer Manual page 43

Keyboard lock
Locking the keys prevents undesired and potentially damag-
ing operations which may occur whenever the regulator is
operating in a public environment.
To activate this function:
• set Loc=YES in the INFO menu
To return to normal functionality:
• set Loc=no
Visualizations
In normal operation mode, the display shows the water
tem-perature as measured by the T3 sensor positioned in the
hot water tank, or the following messages:
FL Intervention of the flow meter connected to Dl1
Lo Low temperature alarm (5°C) detected by sen-sor T2 with
controller on
ALO Low temperature alarm (5°C) detected by sen-sors
T2 or T3 with controller in standby
PDC External condenser alarm
E1 T1 probe failure
E2 T2 probe failure
Alarms
Any alarm signal is accompanied:
• from the output block
• by the lighting of the LED and the sounding of the buzzer
• is subject to the maximum time frequency check (three
alarms per hour)
Below this value the alarm will be automatically reset.
While, if the set value is exceeded, rearming will be manual (in
this case, the alarms specific sign shall alternate with the ALr
sign that means that the device is locked).
To silence the buzzer, simply press any key on the con-
troller.
LED turns off when the cause of the alarm stops.
press the key for 5 seconds, to reset the alarm
–
Opening input Dl1, to which the differential pressure switch
performing the flow switch function is connected, causes the
outputs to switch off immediately.
External unit control panel
3�12�1 Control Panel
The external unit control panel is not a remote control
The external unit control panel it is only used during com-
missioning for automatic address setting and first start-up.
Do not press any button, switch it off or attempt to pro-
gramme it after this.
While the keypad is lockedit is possible to change the set-
points, but it is not possible:
• put the device in standby
• reset the manual reset alarms
• make the cooling/heating selection
• access the configuration menu
E3 T3 probe failure
E4 T4 probe failure
ALR One-hour tripping of one of the alarms for > ASM
LEG Anti-Legionella cycle ended incorrectly (signalling
only)
OFF Stand-by controller
hi High temperature alarm (80°C) detected by sensors T2 or
T3
CAL Exclusive operation of the auxiliary heater with cir-
culation pump off
After one minute, during which the pump is kept on to fur-
ther verify the closure of the flow switch, a manual reset alarm
signal ALR altered to FL and the final shutdown of the pump
The low temperature (5°C antifreeze signalled on the display
by the Lo prompt) and high temperature (80 °C hi on the dis-
play) alarms are managed by means of the heat exchanger
output temperature sensor T2 positioned at the plate heat
exchanger outlet and the hot water tank sensor T3.
The low temperature alarm is monitored also when the con-
troller is in standby, and triggers the oFF and ALo prompts
alternatively and the starting of the circulation pump.
The alarm is reset when the water temperature goes up again
to above the 5°C + 3°C hysteresis threshold.
Alarm PDC appears on the display in case of malfunctioning
of the external condenser.
If the anti-Legionella cycle ends because the timeout has ex-
pired, only the LEG prompt is displayed.
Indications E1, E2, E3 and E4 may appear in case of failure
or incorrect measurement of the three temperature sensors.
PUTTING IT INTO SERVICE
43