-Dati tecnici e caratteristiche soggetti a cambiamenti senza preavviso -Technische Daten und Eigenschaften mit Änderungen ohne Anzeige
-All specifi cation subject to change without notice - Données techniques et caracteristiques suiettes à des changements sans avis
39
DETECTED SITUATION
ERROR DISPLAYED ON
DISPLAY
POSSIBLE REASON
SOLUTION
USER
TECHNICAL SOLUTION
Compressor not working Compressor stops due to
high pressure switch trig-
gering
Fan(s) do(es) not work or
works with low capacity
Call a qualifi ed engineer and
inform him of the read error
and product serial number
Check motor and electric
connections
Compressor not working Prolonged running of unit
without a stop
Poor refrigerant gas load Call a qualifi ed engineer and
inform him of the read error
and product serial number
Top-up gas load
Compressor not working Prolonged running of unit
without a stop
Control contacts have
melted
Call a qualifi ed engineer and
inform him of the read error
and product serial number
Replace the damaged com-
ponent
Compressor not working Prolonged running of unit
without a stop
Air inside cooling circuit Call a qualifi ed engineer and
inform him of the read error
and product serial number
Vent the air out of the cooling
circuit
Compressor not working Prolonged running of unit
without a stop
Partial or complete clogging
of fi lter of expansion valve
Call a qualifi ed engineer and
inform him of the read error
and product serial number
Clean or replace the fi lter
Compressor not working Prolonged running of unit
without a stop
Defi cient insulation Call a qualifi ed engineer and
inform him of the read error
and product serial number
Replace or repair the insula-
tion
Compressor not working Prolonged running of unit
without a stop
Drop in compressor ef-
fi ciency
Call a qualifi ed engineer and
inform him of the read error
and product serial number
Check and replace the com-
pressor valves if necessary
Compressor not working The unit is excessively loud Vibration in pipes Call a qualifi ed engineer and
inform him of the read error
and product serial number
Secure the pipelines better,
Check fastening of pipe con-
nectors
Compressor not working The unit is excessively loud Expansion valve hisses Call a qualifi ed engineer and
inform him of the read error
and product serial number
Top-up refrigerant gas load,
Check that the liquid fi lter is
not clogged
Compressor not working The unit is excessively loud High compressor noise
level
Call a qualifi ed engineer and
inform him of the read error
and product serial number
Check the valve plate.
Replace the compressor if
the bearings are worn. Check
fastening of compressor fi xing
screws.
Compressor not working The compressor leaks oil The oil electrical heater
does not work during ma-
chine stops.
Call a qualifi ed engineer and
inform him of the read error
and product serial number
Replace the electrical heater,
check the electrical connec-
tions
Compressor not working The suction line is wet or
covered with frost
The expansion valve allows
too much refrigerant gas
to pass
Call a qualifi ed engineer and
inform him of the read error
and product serial number
Recalibrate the expansion
valve
Compressor not working The liquid line is too hot Loss of gas load due to
a leak, Expansion valve
closes to fast
Call a qualifi ed engineer
and inform him of the read
error and product serial
number
Identify and eliminate the
leak, Recalibrate the expan-
sion valve
Compressor not working The liquid line is covered
with frost
Dehydrating fi lter clogged Call a qualifi ed engineer and
inform him of the read error
and product serial number
Replace the dehydrating fi lter
Compressor not working The compressor does not
load
Error in connection of sole-
noid valve
Call a qualifi ed engineer and
inform him of the read error
and product serial number
Correct the connection error
Compressor not working The compressor does not
load
By-pass light fi lter occlusion
(high end)
Call a qualifi ed engineer
and inform him of the read
error and product serial
number
Clean the fi lter
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