Electrical System - EdgeStar IB450SSP Service Manual

Electrical System

Ice-Making Stage - The compressor, condenser fan and pump are powered on, the water inlet valve and
hot gas solenoid valve close and the Green LED on the control panel is lit. When the unit is in this stage it
is controlled by a temperature probe on the evaporator. When the Green LED starts flashing the stage is
controlled by a fixed timer. The fan motor is also controlled by a temperature probe (on the condenser.)
When the ambient temperature is too low the fan stops working to maintain the correct temperature.
Ice-Harvest Stage – In this stage the water pump turns off. The hot gas solenoid, compressor and fan
are powered on. The Yellow LED is lit to indicate the ice harvest stage. This stage is controlled by a fixed
timer.
Bin-Full Stage - When the ice bin is full of ice and/or the ice slide way is held open the unit will enter this
stage. In this stage all electrical components are powered off and the Red LED on the control panel is lit.
Cleaning Stage – Press the button marked Clean on the control panel to start the cleaning stage. The
pump and water inlet valve are powered on, and the compressor, condenser fan and solenoid valve are
powered off. The Green and Yellow LEDs will flash together. To stop the cleaning stage simply press the
Clean button again.
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