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Electronic to Valve Control / 47F on the Digital Display
If your cooling unit was configured for Electronic Control, it requires a single power source to the Evaporator, and a power line connecting the Evaporator to the Condensing Unit. If your system is configured for Electronic Control but the Condensing Unit has a separate power source and no wiring connects the Evaporator and Condensing Unit, the Condensing Unit will run nonstop even when the Evaporator turns off. This will cause ice buildup in the evaporator, as well as low temperature readings on digital display.
A system ordered with Electronic Control can be converted to Valve Control in the field as follows:
The wiring diagrams for cooling units can be found in the Owner's Manual, and also can be accessed by clicking on the following links: