Controller Operation
The BIT 20B11E is fitted to the HR410 and LR410.
With this controller also the LAE BIT 12 RU front display is installed.
The Control Unit is fitted at the rear of the cabinet with the Display Unit fitted into the front top right hand side of the
cabinet, interconnected by a ribbon cable.
Defrost type for HR models is a timed off cycle, defrost for the LR410 switches the machine off and allows the ice
to melt, once it is clear of ice, dry the cabinet thoroughly before switching the machine back on.
One probe is fitted measuring air temperature and is used to control cabinet temperature.
In the event of probe failure “E1” will be displayed.
In the event of air probe failure on HR model the refrigeration system will be controlled by a timed sequence. The
controller parameter setting cF is set at 00 which allows for the compressor to be on for 3 minute and off for 4
minutes.
In the event of air probe failure on LR models the compressor will run continuously, the controller parameter setting
cF is set at 1.
Controller and display diagram
Controller – 00-554860
Display – 0-554167
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