SQFlex Service Instructions

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CU 200 SQFlex display and indicator lights
The front cover of CU 200 features a button and various indications:
ON/OFF button
• Green light on: The system has
been switched on.
• Red light on: The system has
been switched off.
• Both lights off: The system
lacks the required power to
light the display.
• Flashing green light: The sys-
tem has adequate power to
light the display but lacks suffi-
cient power to start the pump.
Full water reservoir
The yellow light
indicates that the
water reservoir is full.
Pump operation
A running green light in-
dicates that the pump is
operating at more than
500 rpm.
Fault indicator
Red light indicates fault.
Dry running
Red light indi-
cates lack of
water.
Power and fault codes
The display indicates 0 Watt
until the power supply is suf-
ficient to run the pump at
500 rpm; upon startup, the
power consumption of the
pump is indicated in kW.
When the fault indicator is
on, the display indicates fault
codes, see Trouble-shooting
by means of CU 200 on page
10.
F1 = overvoltage
F2 = overtemperature
F3 = no contact to the pump
F4 = overload
sqflex_SI_US_WG.book Page 9 Thursday, October 1, 2009 3:27 PM