REPAIR MANUAL
REFRIGERATION UNIT
– ELECTRICS
Rev
. 21B
RM-Refrigeration Unit - electrics_EN
page 12 of 25
3.3.1 Replacement of controller display
Depending on the model/unit, a different controller display is installed in the housing. If anything is
unclear, please contact your service partner.
Remove the connecting cable (control line) from the display connection. Remove the locating screws
of the display and remove it from the housing. Depending on the model, it may not be necessary to
remove the controller housing to replace the display.
Control unit Störk ST200F
Control unit Störk ST501
Controller housing, complete
Störk “ST501” display
Störk “ST521” display
Put the new original replacement display back into the housing, secure it with the locating screws, and
connect it to the control line.
3.3.2 Replacement of controller board
Depending on the model/unit, a different controller board is installed in the housing.
Remove all cables / control lines (control line) from the circuit board, remove the fasteners (screws /
mounting clips) and take them out of the housing.
Controller board (marked in red)
Circuit board fastening
Put the new original replacement board back into the housing, secure it and connect all cables / control
lines.
All cables / control lines must be correctly reconnected according to the valid product-
specific circuit diagram!