SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION
Shortage of water Water spilling out through curtain Check or replace curtain
Water solenoid valve not opening Replace valve
Water leak in sump area Locate and repair
Water flow control plugged Replace water inlet valve
Leak of water drain valve Replace valve
Irregular cubes size & some Some jets plugged Remove jet cover and clean
cloudy
Shortage of water See shortage of water
Unit not level Level as required
Spray bar not rotating (AC 225) Remove spray bar & jet bearing
and clean them
Cubes too large Freezing cycle too long
Review setting of DIP SWITCH keys
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 (Red-alarm LED glows
) more ventilation
Overcharge of refrigerant
Correct the charge. Purge off slowly
Capillary tube partially restricted Blow charge, add new gas & drier,
after evacuating system with
vacuum pump
Hot gas solenoid valve leaking Replace valve
Undercharge of refrigerant Charge to data plate indication
Spray bar not rotating (AC 225)
Remove spray bar & jet bearing and
clean them
Discharge head pressure too high See incorrect discharge pressure
Poor harvest Too short defrost time
Check & adjust DIP SWITCH keys 5-6-7
Inoperative ambient sensor Replace sensor
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
Air vented holes in mold cups Clean out holes plugged
Discharge head pressure too low See incorrect discharge pressure
SERVICE DIAGNOSIS
Page 36
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