Alarms - Daikin Zanotti SB 120-O Manual De Uso

4. Unit does not start operating when pressing ON/OFF key (the display is turned on): check
microdoor connection keeping in mind that the switch contact must be closed when the door is
closed.
Unsatisfactory efficiency of the unit:
If no defects are found in the unit check that: cold room doors are perfectly tight; there is no cold dispersion; the
cold room is used wisely; no unfrozen liquids or foodstuffs are placed in the low temperature room; the evaporator
is ice-free.We recommend installation of the machines far from the doors especially when the cold room is
expected to be opened many times a day.
WARNING:
Removal of protections during machine operation is absolutely forbidden. They have been
developed to safeguard the operator's safety.

12.4 Alarms

When the unit is in alarm mode, the control LED lights up, the buzzer (available if installed by the customer)
starts operating and the display shows an alarm code allowing the immediate identification of the alarm.
ALARM
(HA) alternating with cold room
temperature.
High temperature
(LA) alternating with cold room
Low temperature
temperature.
Steady (P1).
Room sensor
(P2) alternating with cold room temperature Sensor not connected
Evaporator sensor
(dA)
temperature
Open Door
(PrE) alternating with room temperature;
LED (4) lights up each time the high
pressure switch is tripped. If more than 10
trips occur in one hour, then (PAL)
alternating with cold room temperature is
High pressure
displayed and alarm relay is activated
together with LED (4).
In this situation all functions are
interrupted.
(bAL) alternating with cold room
temperature. The voltage monitor is an
electronic device which checks the supply
voltage of the unit when voltage variations
exceed +/-12%. The unit stops for about
Voltage monitor
6 minutes and restarts automatically if
voltage is within the prescribed limits.
Warning: on first starting the monitor
carries out a counting phase of 7 minutes,
during which the unit should be left
connected but in OFF condition.
DISPLAY
alternating with
Excessive door openings.
Too high temperature of
products stored.
Malfunction of the unit.
Malfunction of electronic
controller
Sensor not connected
cold room Door opening time exceeds
max opening by parameter
Faulty operation of
condenser fan.
Dirty condenser.
Wrong supply voltage
CAUSE
Service intervention
Replace sensor
Replace sensor
Automatic
when the door is
closed.
Switch off the
refrigerating unit,
wait a few seconds
and switch on
again.
REMEDY
reset
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