Do you have a question about the Scotsman MXG 438 A/W and is the answer not in the manual?
Check unit packaging condition and remove securing strips and carton.
Place ice maker on bin, remove polystyrene and ice chute.
Cutting gasket and routing I/R sensor to the inner bin area.
Check data plate for voltage, fuse, and ensure a solid earth wire.
Required ambient/water conditions and pressure for operation.
Minimum 15cm clearance on sides for airflow and connections.
Installing proper plug, voltage variation, and fuse protection.
Connecting water inlet solenoid valve and water drain hose.
Details on 3/4” inlet fittings and drain hose for water-cooled models.
Open water tap and switch on the electrical supply line.
Locating the green Master Push Switch on the front panel for operation.
Pressing the green push button to start the machine.
Components active: Compressor, Water Pump, Fan Motor, Contactor.
Understanding LED indicators on the PC Board for operational status and errors.
Ice maker turns off when bin is full, interrupting I/R beam.
Explanation of DIP switches 1-10 for controlling machine functions.
Unit OFF if condensing temp exceeds limits; Red ALARM LED ON.
Unit OFF if evaporating temp is too high after 15 min; Red ALARM LED blinking.
Red/Yellow LEDs steady ON indicate condenser sensor failure.
Red/Yellow LEDs blinking indicate evaporator sensor failure.
Alternating Red/Yellow LEDs indicate ice level control failure.
Sanitize monthly; clean every six months or when signaled.
Label on front panel shows LED meanings for diagnosing malfunctions.
Deep depression indicates a short freezing cycle; adjust DIP SWITCH 1-4.
Thin ice with big depression may indicate inoperative evaporator sensor.
Red LEDs (-15°C) ON immediately at start-up indicates sensor issue.
Diagnosis of a clogged water filter affecting water supply.
Diagnosis of a clogged water inlet strainer.
Oversized ice cubes may require reducing freezing cycle time via DIP SWITCH 1-4.
Mixed ice sizes may indicate incorrect refrigerant charge (too low).
Yellow and Red LEDs blinking alternately indicate ice level sensor failure.
Unit OFF (Red LED ON) due to high condensing temp from inoperative fan motor.
High condensing temperature due to a dirty condenser.
High condensing temperature caused by high ambient room temperature.
High condensing temp due to no water flow to water-cooled condenser.
High condensing temp due to inoperative condenser sensor.
Unit OFF (Red LED blinking) due to high evaporating temperature.
Low discharge pressure indicates compressor efficiency loss.
High suction pressure indicates compressor efficiency loss.
Low discharge pressure can indicate a lack of refrigerant.
Low suction pressure can indicate a lack of refrigerant.
High evaporator temperature can indicate refrigerant leak.
High suction pressure can indicate refrigerant leak.
Red/Yellow LEDs steady ON indicate faulty condenser sensor.
Red/Yellow LEDs blinking indicate faulty evaporator sensor.











