English
21
SERVICE MODULARI 06/2014
8. SERVICE DIAGNOSIS
The table below is intended as a quick reference to aid the
Service Agent in determining the cause of a particular type
o
f malfunction, as well as the recommended repair. It is not
intended to be an exclusive list.
Reference to other portions of this manual, inclusing wiring
diagrams, installation, and operation are recommended to
better determine the cause of a problem.
Alimentazione
Electrical Power Supply
Funzionamento
Operation
Deposito Pieno/Lavaggio
Storage Full/Washing
Allarme
Alarm
Allarme Alta Pressione
High Pressure Alarm
Reset/Lavaggio
Reset/Washing
q
w
e
r
t
ò
B
SYMPTOM POSSIBLE CAUSE CORRECTION
Warning Red LED ON
No warning LED/LIGHT ON
See page 20
P.C. Board inoperative.
No power to unit.
See page 20
Remove board and check.
Check electrical source.
Bin full Yellow LED ON
Bin Full of ice.
Magnetic switch inoperative.
Nome.
Check and replace.
Machine runs, compressor
does not.
P.C. Board compressor relay open.
Compressor contactor open.
Compressor relay open.
Compressor winding open.
Test and replace.
Test and replace.
Test and replace.
Test and replace.
Machine runs, makes ice,
does not try to harvest.
Ice thickness control open.
Too soft water.
Built-in relay on P.C. Board open.
Check sensor fingers if are not covered with
scale sediment.
Water electrical conductivity
must be higher then 20 mS.
Machine can't run with
demineralized water.
Check and replace P.C. Board.
Machine runs, makes
and harvests ice
but very slowly.
Low refrigerant charge.
Check system for correct refr. charge.
Check for leak weight in charge.
Low ice capacity.
High discharge pressure due to not-
condensableor overcharge.
Inefficient compressor.
Condenser dirty.
Low water flow (Water-cooled).
High air temperature (air-cooled).
Evacuate and weigh
in charge.
Replace.
Clean.
Check and repair.
Check temperature of air entering conden-
ser.
Machine makes irregular ice.
Plugged water distributor.
TXV supertheat wrong.
Refrigerant charge low.
Clean water distributor.
Adjust or replace.
Adjust-check for leak recharge.
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