30
Red led, buzzer and alarm
relay are activated; LI is
displayed in the alarm
menu.
electronic controller
Room sensor
(E1)
Red led, buzzer and alarm
relay are activated; E1 and
Err are displayed
alternately.
Faulty sensor
Sensor with wrong
connection
Replace sensor
Evaporator sensor
(E2)
Red led, buzzer and alarm
relay are activated; Err and
cold room temperature are
displayed alternately. E2 is
displayed in the alarm
menu.
Faulty sensor
Sensor with wrong
connection
Replace sensor
Condenser sensor
(E4)
Red led, buzzer and alarm
relay are activated; Err and
cold room temperature are
displayed alternately. E4 is
displayed in the alarm
menu.
Faulty sensor
Sensor with wrong
connection
Replace sensor
Condenser temperature
If the condensing
temperature exceeds a
factory pre-set value, red
led and buzzer are
activated; H4 is displayed
in the alarm menu.
Dirty condenser
Clean condenser
High pressure
(E0)
Each time the pressure
switch trips, the buzzer and
the red led are activated. If
more than 10 trips occur in
1 hour, then the unit is
turned off automatically.
The alarm relay is
activated, Err and cold
room temperature are
displayed alternately. E0 is
displayed in the alarm
menu. To reset the unit
turn it off and then on
again using the ON/OFF
key.
Faulty operation of
condenser fan.
Dirty condenser.
Switch off the refrigerating
unit, wait a few seconds
and switch on again.
Voltage monitor
(E8)
The voltage monitor is an
electronic device which
checks the supply voltage
of the unit. When voltage
variations /- 12%
the device activates the red
Wrong supply voltage
