1.
Compressor stops. The unit is equipped with an overtemperature device which stops the
compressor every time the max. allowable temperature of motor windings is exceeded. Possible
causes are:
- insufficient ventilation of the room where the unit is installed;
- anomaly in mains voltage;
- faulty operation of condenser fan.
Device reset is automatic.
2.
Display does not light up. Check:
- if there is power to the unit;
- if mains cable is connected properly;
- fuses inside the electric panel
3.
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.
12.4 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.
12.5 Alarms
The alarm message is displayed until the alarm condition recoveries.
All the alarm messages are showed alternating with the room temperature except for the "P1" which is flashing.
To reset the "EE" alarm and restart the normal functioning press any key, the "rSt" message is displayed for
about 3s.
Silencing buzzer
Once the alarm signal is detected the buzzer, if present, can be silenced by pressing any key.
Alarm recovery
Probe alarms : "P1" (probe1 faulty), "P3" ; they automatically stop 10s after the probe restarts normal
operation. Check connections before replacing the probe.
Temperature alarms "HA" and "LA" automatically stop as soon as the thermostat temperature returns to
normal values or when the defrost starts.
Humidity alarms "HHA" and "LHA" automatically stop as soon as the humidity returns to normal values.
Door switch alarm "dA" stop as soon as the door is closed.
13 HOW TO ORDER SPARE PARTS
When ordering spare parts make reference to the number written on the unit plate.
WARNING
Worn parts should be replaced only by qualified personnel or by the manufacturer.
Message
Cause
"P1"
Thermostat probe failure
"P3"
Humidity probe failure
"HA"
High temperature alarm
"LA"
Low temperature alarm
"HHA"
High humidity alarm
"HLA"
Low humidity alarm
"dA"
Door switch alarm