Page 29
Page 29
SYMPTON
POSSIBLE CAUSE
SUGGESTED CORRECTION
Irregular cubes size & some
Some jets plugged
Remove spray bar & jet bearing
cloudy
and clean them
Shortage of water
See shortage of water
Unit not level
Level as required
Spray bar not rotating
Remove spray bar & jet bearing
and clean them
Cubes too large
Freezing cycle too long
Review setting of DIP SWITCH keys
Inoperative evaporator sensor
Replace sensor
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
Short 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
Clogged air vented holes in mold cups
Clean out holes plugged
Discharge head pressure too low
See incorrect discharge pressure
Unit won’t harvest
Inoperative P.C.Board
Replace P.C.Board
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
Inoperative condenser sensor
Replace sensor
Inoperative P.C.Board
Replace P.C.Board
Water regulating valve misadjusted
Adjust its setting stem
Excessive water in unit base
Water tubing leaking
Check. Tighten or replace
SERVICE DIAGNOSIS
