Ranco control
E1 = Air sensing probe - Open or Shorted and needs replacing
E2 = Evap. Coil probe - Open or Shorted and needs replacing
Carel Control
EO = Air sensing probe - Open or shorted
E1 = Evap. coil probe - Open or shorted
Dual Pressure Control
(Self-Contained Models Only)
The dual pressure control is used as a safety device and is factory set. The pressure control
works on a differential. The low-pressure side is a safety to protect the compressor in the case
of refrigerant loss. The high-pressure side is a safety to protect from system failure causing too
high of system pressure.
The high side of the pressure control is factory set to 400psi and is not adjustable.
Low side setting for the R404a cases are set at 40psi differential for the cutout and 60psi for
the cut-in.
Refrigerated Self-Serve Merchandiser (High Profile)
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