Irregular cubes Some jets plugged Remove jet cover and clean
size & some cloudy
Shortage of water See shortage of water
Unit not level Level as required
Cubes too large Freezing cycle too long Adjust evap. thermostat
Inoperative evaporator thermostat Replace thermostat
Decreased ice capacity Inefficient compressor Replace
Leaky water valve Repair or replace
Non-condensable gas in system Purge the system
Poor air circulation or excessive Relocate the unit or provide for
hot location more ventilation
(Red-alarm LED glows)
Overcharge of refrigerant Correct the charge. Purge off slowly
Capillary tube partially restricted Blow charge, add new gas & drier,
after evacuating system with
vacuu pump
Hot gas solenoid valve leaking Replace valve
Undercharge of refrigerant Charge to data plate indication
Discharge head pressure too high See incorrect discharge pressure
Poor harvest Restriction in incoming water line Check water valve strainer and flow
control. If necessary enlarge the
flow control orifice
Water inlet valve not opening Valve coil with open winding
Replace valve
Hot gas valve orifice restricted Replace hot gas valve assy
Discharge head pressure too low See incorrect discharge pressure
Incorrect discharge pressure Inoperative fan pressure control Replace pressostat
Inoperative fan motor Replace
Water regulating valve misadjusted Adjust its setting stem
Excessive water in unit base Water tubing leaking Check. Tighten or replace
SERVICE DIAGNOSIS
SYMPTOM POSSIBLE CAUSE SUGGESTED CORRECTION
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