Protections and alarms
GLT80TDC is electronically protected against a
number of possible malfunctions and failures:
• Battery discharge: refer to point 5 for details.
• Fan over current: protects the compressor and
the electronic driver against fan over current due
to start or running overload, or short-circuit.
• Starting failure: if the running speed is not
achieved during the starting sequence, the unit
stops and retries the start up after one minute.
• Compressor overload: This protection operates
when the compressor speed drops below the
set up speed, or when the current drawn in is
excessive, thus preventing the appliance from
operating under overload conditions, causing
refrigerating overload or compressor failure.
• Electronic driver overheat: In case the
temperature of the electronic components of the
control becomes too high, an internal sensor will
stop the unit.
When the alarm is on, ten automatic attempts
to restart the compressor will be available.
In case of battery protection, the number of
automatic attempts to restart is unlimited.
Once the sequence of automatic attempts to
restart the compressor is finished, the unit will
remain permanently unable to operate until it
is switched off and on again from the power
supply. The intervention of the thermostat during
the sequence of automatic restart attempts
interrupts and resets the sequence.
The SPI can be configured in a way that a LED can
be connected between terminals 3 and 4 (see Fig.
2 in point 3) in order to display the intervention
of any alarm, and to identify its cause. The
visualisation consists of a sequence of flashes
of the LED repeating every 5 seconds, until the
cause of the alarm disappears. The code of the
flashing sequence corresponding to each alarm is
indicated in Table 6:
No. of flashes
Type of failure
1
Battery protection
2
Fan over current
3
Starting failure
4
Compressor overload
5
Electronic driver overhead
7
Internal error
In case of an alarm display, if the FDC3 electronic
driver is connected as a slave to the appliance’s
Electronic Integral Manager (EIM) through the
SPI, a digital alarm code will be transmitted to the
EIM, which in turn will manage the information
for displaying and acting purposes.
GLT80TDC should always be fan cooled. FDC3
electronic driver has its own fan to cool its power
components -. Best results are obtained when
both, but enough compressor and driver are
cooled with fresh air coming directly fresh air
is needed in the surroundings of the electronic
driver to be cooled properly from outside, before
being heated up in appliance condenser.
Table 6. Alarm
codification
Compressor Cooling
14
FRCC.PC.041.A1.02
