10
FRCC.ES.010.A4.02
Manual
Controller Installation
• Turn OFF the main power switch
• Remove the new controller (remove all plugs, 2 x I-type screws and controller)
• Install the new controller
• Turn ON main power switch again, no factory reset needed
• After a short time message “typ” appears on the screen
• Follow same steps as shown in preceding chapter fifth row and following
spare part code controller SINGLE pack: 118U3465
spare part code controller MULTI pack (12pcs.) : 084B8135
Controller Replacement of a
unit on site
• The setpoint of the condensing temperature is calculated from the measured ambient temperature
plus an adjustable Temperature Offset (called Reference) and controlled by the fan speed
• Factory setting of Reference = 8.0K
• The Reference is accessible by pressing short the middle button of the controller
• When Reference is shown, it can be modified with the upper or lower button
• Additionally to this the control of the condensing temperature can be limited by following parameters:
“r82” = minimal condensing temperature (factory set: 10.0°C)
“r83” = maximal condensing temperature (factory set: 40.0°C)
Control of condensing pressure
Control
• The controller optimizes the regulation of the crankcase heater itself. The heating power depends on
the ambient temperature and suction pressure and is controlled by Pulse Width modulation
• There is no change of parameters “P45”, “P46” and “P47” necessary on site
• The fan speed is controlled by PI-control, depends on the actual value and the setpoint of the con-
densing temperature
• There is no change of parameters “F14” and “F21” to be provided on site
Control of crankcase heater
Control of Fan Speed
