Troubleshooting - ITV ICE MAKERS ALFA Technical & Service Manual

10. TROUBLESHOOTING

PROBLEM
1) None of the electrics work.
2) All the electrics work except
compressor.
3) All the electrics work but the
compressor "klixons"
4) Everything appears to be
running correctly but no ice is
being made in
evaporator.
TECHNICAL SERVICE MANUAL
POSSIBLE CAUSES
A) The machine is not plugged in.
B) The line fuse has blown.
C) The current
connected in the junction box.
D) The cut off micro-switch is faulty or
wrongly adjusted.
E) Safety pressure switch faulty.
A) Check switch installed in electrical
panel.
B) Faulty relay .
C) Faulty "Klixon".
D) Faulty compressor.
A) Voltage too low.
B) Dirty condenser.
C) Obstruction in air circulation.
D) Fan has broken.
E) Starter capacitor faulty.
F) Fan pressure swtich faulty or
wrongly adjusted.
G) Water pressure switch valve
faulty or wrongly adjusted.
H) Cooling water pressure switch is
faulty or badly adjusted.
J) Non-condensable gases in system. J) Purge system.
A) Unprimed pump.
the
B) Faulty pump.
C) Water does not enter into the bin.
D) There is water in the gas circuit.
E) Water tray is dry.
F) Freezing system is faulty (dirty
condenser, water pressure switch
or entrance valve
wrongly adjusted
refrigerant.
SOLUTION
A) Plug the machine.
B) Replace fuse.
line is wrongly C) Check connections.
D) Check, adjust or change.
E) Replace.
A) Select position 1..
B) Replace relay.
C) Replace Klixon.
D) Replace compressor.
A) Check voltage.
B) Clean condenser.
C) Move machine to a correct position.
D) Replace fan.
E) Replace condenser.
F) Replace or adjust pressure switch
G) Replace or adjust.
H) Adjust or change.
A) Check overflow, water bin for leaks,
water entry valve and prime the
pump.
B) Replace.
C) Check water entry valve and change
if is necessary.
D) Replace
refrigerant (vacuum) and charge
new refrigerant.
E) Check overflow pipe and for leaks.
Inspect draining valve in machines
with automatic cleaning system.
Check the buoy valve mechanism
in DP90 and DP140.
F) Clean condenser, check all the
system
faulty or switch, water inlet valve, refrigerant
insufficient charge, etc.
NG DP
the drier, empty the
components: pressure
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