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Error Codes
Error
Code
Problem Corrective Action/Reset Details
EE
(E5)
High Evaporator Temperature
If evaporator temperature 140°F (60°C) or higher
for 5sec., unit stops.
Check for harvest problem (stuck HGV or control
board relay), hot water entering unit, or shorted
thermistor.
Press the "RESET" button to reset.
EE
(E9)
Condenser Thermistor Error
If condenser thermistor is open or shorted for
2sec., unit stops.
Note: IM-500SAA does not utilize a condenser
thermistor, therefore E9 error will not occur.
Replace condenser thermistor.
EE
(EA)
Control Board Error
If model data IC is defective, unit stops.
Replace control board.
EE
(EC)
Evaporator (Cube Control) Thermistor Error
If evaporator thermistor is open or shorted for
2sec., unit stops.
Replace evaporator thermistor.
EE
(Ed)
Water Regulating Valve Error
If water regulating valve thermistor detects a
temperature below the water regulating valve
error detection temperature (Control Board
Setting 36), error is displayed but unit continues
to operate.
Note: IM-500SAA does not utilize a water
regulating valve, therefore Ed error will not occur.
Check water regulating valve.
Press the "RESET" button to reset.
H. Quick Adjustments
1. Dimple Diameter
The factory set dimple diameter is 3/16" (5 mm). NOTICE! Do not decrease the dimple
diameter below 3/16" (5 mm).
a) To increase dimple diameter:
1) Remove front panel.
2) Press the "SERVICE 1" button to view the current freeze cycle termination temperature
setting.
3) Press the "SERVICE 1" button to raise freeze cycle termination temperature setting
(Control Board Setting 2). Temperature setting rises in .5°C increments. The "." in the
lower, right corner of the display indicates .5°C. Default is -18.5°C. For reference, raising
freeze cycle termination temperature setting to -13°C will result in a dimple diameter of
approximately 3/8" (10mm).
4) Once the display returns to "on" (20 seconds), the new setting is saved.
b) To decrease dimple diameter:
1) Remove front panel.
2) Press the "SERVICE 2" button to view the current freeze cycle termination temperature
setting.