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Service Diagnosis
SYMPTOM POSSIBLE CAUSE SUGGESTED CORRECTION
Irregular cubes size & some
cloudy
Some jets plugged Remove jet cover and clean.
Shortage of water See shortage of water.
Unit not leveled Level as required.
Poor pumping Check and/or replace the water pump.
Cubes too large Cube size control set
improperly
Check and adjust for proper operation.
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 hot location
Relocate the unit or provide for more ventilation.
Overcharge of refrigerant Correct the charge.
Capillary tube partially
restricted
Recover charge, add new gas & drier, after
evacuating system with vacuum pump.
Undercharge of refrigerant Charge to data plate indication.
Discharge head pressure too
high
See incorrect discharge pressure.
Clogged air filter Clean or replace.
Poor harvest Restriction in incoming water
line
Check water valve strainer and flow control. If
necessary enlarge the flow control orifice.
Too short defrost time Check temperature control. Replace if
necessary.
Cube size control set for too
large
Re-set cube size control.
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
plugged
Clean out holes.
Discharge head pressure too
low
See incorrect discharge pressure
Unit won’t harvest Inoperative cube size control Replace cube size control
Hot gas valve not opening Valve coil with open winding. Replace valve.
Water solenoid valve not
opening
Valve coil with open winding. Replace valve.
Incorrect discharge pressure Dirty air filter Clean or replace.
Inoperative hi press control Replace.
Excessive water in unit base Water tubing leaking Check. Tighten or replace.
ICEU070A
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