Icematic N 132M, Service Manual

Page: 28 / 30

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SERVICE DIAGNOSIS
The table below is intended as a quick reference to aid
the Service Agent in determining the cause of a partic-
ular type of 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 recom-
mended to better determine the cause of a problem.
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 cove-
red 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
condenser.
Machine makes irregular ice.
Plugged water distributor.
TXV supertheat wrong.
Refrigerant charge low.
Clean water distributor.
Adjust or replace.
Adjust-check for leak recharge.