Scotsman UF424A-1A, Техническое руководство

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UF424 / UN324 Technical Manual
September 2017
Page 15
Basic Troubleshooting
Symptom Possible Cause Probable Correction
No ice in bin Unit in off mode or off on
error code.
Remove front panel and check controller code
display. Push ON/OFF button to reset. See pages
16 and 17 for further details.
False bin full
b
is showing in the display but the bin is not full.
Check that there is good connection from the
controller to the photo eye set. Replace photo eye
set if no other cause can be found.
No power to unit Check for the power light on the controller. If not
illuminated restore power.
Auger motor not operating Open windings. Check motor windings and replace
if open.
Gear reducer seized, replace gear reducer.
Auger bearings seized, replace bearings and seal
No power to auger motor, Auger light is ON.
Replace controller.
Code 2 in controller. Check that sensor rotates with
motor and isn’t loose. Tighten screw if loose.
Code 1 in controller, replace auger motor.
Compressor not operating Contactor coil is open, check and replace if needed.
Compressor hot and overheated, check start relay
and start capacitor. Check system charge. Check
TXV for high superheat.
No power to compressor or contactor coil.
Compressor light is ON. Replace controller.
Compressor at room temperature, will not start.
Check windings. If open, replace compressor. If not
open, check/replace start relay and start capacitor.
Compressor operating,
auger turning, no ice is
made
Check refrigeration system, TXV may be set to too
much superheat or the system is low on refrigerant.
Excessive noise Tubing contact Check for tubes rattling and panels not tight
Fan blade out of balance Replace fan blade
Compressor noisy Replace compressor
Moaning noise when
making ice
Water seal being
compressed
Gear reducer bearing failure, replace gear reducer
Slow or Low production Air filter is dirty Clean air filter
Condenser is dirty Check and clean condenser
Room and/or Water
Temperature too high
Maximum production will be achieved at 70°F / 21°C
air and 50° / 10°C water
Restricted air flow to unit Check and remove air flow restrictions
Unit cycles off and
restarts
Loose electrical connection Check power cord and outlet. Outlet may be worn,
replace worn outlet.
Note: A damaged power cord must be replaced by the identical, OEM service part.