To manually set the ems controller to the saving mode, press the teach button and hold for 5 seconds.
To bring the cooler out of the saving mode during a teach period, press the up button and hold for 5 seconds.
5.7 defrost on glass door coolers (GDC)
Defrost cycles minimizes the risk of the evaporator icing up.
The defrost cycle occurs periodically as defined by the defrost interval (dE).
The defrost interval starts when the ems controller is powered up or at the end of an uninterrupted pull down.
Some ems controllers also enable defrost cycles to be started manually.
The defrost cycle ends after the time defined by the defrost duration (dd) or on reaching the defrost termination tem-
perature (dtd), as shown:
Note: Manual defrosts also end after the defrost duration (dd) or on reaching the defrost termination temperature (dt d).
For more information about the parameters used in defrost:
l See "defrost duration (dd)" on page 70
l See "defrost interval (dE)" on page 70
l See "defrost termination temperature (dtd)" on page 71
5.8 freeze-up protection
Freeze-up protection prevents over cooling.
Freeze-up protection occurs if the temperature measured on the appliance sensor falls below the freeze-up protection
(dtt) temperature.
During freeze-up protection, ems controllers display 888 and stop the compressor to prevent further cooling.
ems controllers then resume normal operation when the temperature rises to the freeze-up protection (dtt) temperature
plus the differential (dIF) temperature.
For ems controllers that manage the evaporator fan, the ems controller starts the evaporator fan cycle.
For more information about the parameters used in freeze-up protect:
l See "differential (dIF)" on page 70
l See "freeze-up protection (dtt)" on page 72
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