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ALARM
High temperature
Low temperature
Room sensor
Evaporator sensor
ondenser sensor
Condenser temperature
High pressure
DISPLAY
(HI)
Red led and alarm relay
are
activated;
HI
displayed
in the alarm
menu as indicated above.
(LI)
Red led, buzzer and alarm
relay are activated; LI is
displayed
in the alarm
menu.
(E1)
Red led, buzzer and alarm
relay are activated; E1 and
Err
are
displayed
alternately.
(E2)
Red led, buzzer and alarm
relay are activated; Err and
cold room temperature are
displayed alternately. E2 is
displayed
in
the
alarm
menu.
(E4)
Red led, buzzer and alarm
relay are activated; Err and
cold room temperature are
displayed alternately. E4 is
displayed
in
the
alarm
menu.
If
the
condensing
temperature
exceeds
factory pre-set value, red
led
and
buzzer
activated;
H4 is displayed
in the alarm menu.
(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
activated,
Err
and
room
temperature
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.
CAUSE
Excessive door openings
Excessive product load
is
Product too warm
Malfunction of the unit
Malfunction
electronic controller
Faulty sensor
Sensor with wrong
connection
Faulty sensor
Sensor with wrong
connection
Faulty sensor
Sensor
with
connection
Dirty condenser
a
are
Faulty
operation
condenser fan.
Dirty condenser.
is
cold
are
REMEDY
of
the
Service intervention
Replace sensor
Replace sensor
Replace sensor
wrong
Clean condenser
of
Switch off the refrigerating
unit, wait
and switch on again.
a few seconds
31
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