46
The following table provides guidance in identifying the causes and solve the most frequent
anomalies, which do not allow technical service.
Electrical repairs may be also performed by your electrician.
VISUAL AND
ACOUSTIC ALARM
Check the set limits with
reference to the working
setpoint. See Par. 5.2.4
Too narrow high/limit alarm limits
Evaporator fan is stuck
If problem persists, turn off
the unit or adjust the SET
POINT to a temperature that
allows the compressor to
stop, Par.5.2.3
Also change the alarm limits
Par.5.2.4
Ice formed on the evaporator
Faulty defrost heater
Unbalanced probes
Too high ambient temperature
Condenser clogged with dirt and
dust
Too many products have been
filled in the chamber.
Too humid products
Electrical or electronic faults
Cooling system low in gas
If the problem occurs again,
contact technical service
HIGH TEMP. CAUSED
BY OPEN DOOR
or
PRODUCT HIGH
TEMP. CAUSED BY
OPEN DOOR
Reduce the number of door
openings; close the door as
soon as possible.
The door is not properly closed
Too long and too frequent door
openings.
This improper usage may cause different malfunctions
HIGH
TEMPERATURE
CAUSED BY POWER
FAILURE
or
PRODUCT HIGH
TEMPERATURE
CAUSED BY POWER
FAILURE
Alarm caused by no mains or
accidental disconnection of the
equipment.
Replace the fuses, Par 6
If the problem occurs again,
contact technical service