Galletti LED 503 Manual Del Usuario página 20

LED 503
MINIMUM TEMPERATURE CONTROL
This logic makes it possible to keep the room temperature from falling too far
when the thermostat is off by forcing the unit into the heating mode if necessary
and for the time required.
If the electrical heater is present, it will be used only if it was previously selected
as a resource in the Heating mode.
G B
SELECTION
When the thermostat is off, you can select the Minimum Temperature control
by pressing at the same time the keys DOWN
The same key combination disables this function.
ACTIVATION
If this control is selected, the terminal will turn on if the room temperature falls
below 9°C.
When temperature exceeds 10°C the thermostat will resume the OFF status.
NB: pressing OFF on the digital input will disable this logic.
DISPLAY
The display shows the following information
> Minimum Temperature control selected: cooling symbol lit (green)
> Minimum Temperature control active: indication DEFR
ALARMS
The control manages two types of alarms:
> Serious Alarms: cause forced switch-off of thermostat
> Non-Serious Alarms: does not force thermostat switch-off but disables
possible critical functions
SERIOUS ALARMS
AL01
> = external air temperature probe error (if thermostat installed on-
board)
AL02
> = internal air temperature probe error (if thermostat wall-mounted
and external air temperature probe disconnected)
NON-SERIOUS ALARMS
The only non-serious alarm is water probe missing/disabled. It is displayed as
follows:
> with controller OFF: display of
> with controller ON: the cooling or heating symbol flashes depending
on the operating mode selected +
FC66002953 - rev. 02
È severamente vietata la riproduzione anche parziale di questo manuale / All copying, even partial, of this manual is strictly forbidden
+ FAN .
Air temp
AL03
AL03
fashes
SUMMARY OF SYMBOLS
Symbol Controller Symbol
Status Status
ON Steady green
 ON Steady orange
 ON Flashing orange no water enabling for cooling
 ON Flashing red
OFF Steady orange

ON Steady green
 ON Steady orange
 ON Flashing orange no water enabling for heating
 ON Flashing red
AUT ON Steady red
1 ON Flashing red
ON Steady red

2 ON Red
 ON Steady orange
 ON Flashing orange heater on
3 ON Steady red
SELF-DIAGNOSIS PROCEDURE
This procedure allows you to check whether the individual outputs of the
controller function correctly.
To run the procedure, follow the directions below.
> Switch the controller OFF
> Press the UP and DOWN at the same to reach the password entry mode
> Use the UP and DOWN keys until you reach the password for
self.diagnosis (30). Press FAN to confirm. The following screen will be
displayed:
> Press the FAN key to switch on the various thermostat outputs in
sequence.
> Press the MODE key to exit the self-diagnosis procedure (after a few
minutes the thermostat will automatically exit in any case).
20
Meaning
Stand by
Cooling mode
water probe alarm
Anti-freeze function enabled
Stand by
Heating mode
water probe alarm
AUTOMATIC speed selected
EXTRA-LOW speed selected/activated
LOW speed selected/activated
MEDIUM speed selected/enabled
heater enabled
MAXIMUM speed selected/enabled