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The control box is accessed from the rear of the unit. Remove the screws holding the pipe cover and the control box cover to reach the control board and other components.
A solid state board controls the IM operation. Several adjustments are included on the board. These adjustments are factory set for proper operation.
Later, we will cover the adjustments and discuss the proper settings.
CONTROL SWITCH TO ICE.
INITIAL HARVEST CYCLE.
FREEZE CYCLE.
NORMAL HARVEST CYCLE.
FREEZE, HARVEST, FREEZE, HARVEST, FREEZE, HARVEST,
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Now, lets take a look at the basic IM sequence of operation. When the control switch is placed in ICE, the unit starts in the Initial Harvest cycle.
When power is supplied, the compressor, hot gas valve, and actuator motor energize. The compressor starts in harvest to reduce the starting load and increase compressor life. This will also clear any ice from the evaporator plate before the freeze cycle begins.
