Wilo Control MS-L Installation And Operating Instructions Manual page 27

7.1.2 Buttons
Function
Manual mode
Automatic mode
Stop
Buzzer off/reset
7.1.3 LEDs
Display
Mains connection
Automatic mode
Pump operation
Service interval/operating
parameters
High water alarm
"Motor current monitoring"
fault
"Thermal motor monitoring"
fault
7.1.4 Key lock
Installation and operating instructions • Wilo-Control MS-L • Ed.02/2022-05
Buttons Description
MS-L1... MS-L2...
Pressing the button switches the respective pump on independent of the level
control. The pump operates as long as the button is held down. This function is in-
tended for test mode.
Press the button to switch on automatic mode. The pumps are switched on and
off independent of the level control.
Press the button to switch off automatic mode. The pumps are not controlled de-
pendent on the level. The switchgear is in standby mode.
Press the button to switch the integrated buzzer off and deactivate the collective
fault signal (SSM).
Press the button for more than 1 s to acknowledge a fault. This releases the con-
trol again.
Control MS-L2...: Pump-dependent LEDs are displayed in two rows using the symbols:
• Top row: current status of pump 1
• Bottom row: current status of pump 2
LED LED colour
MS-L1... MS-L2...
Green
Green
Green
− Yellow
Red
Red
Red
Activate the key lock to prevent inadvertent or unauthorised activation of buttons:
Description
Switch the key lock on and off by pressing the following but-
tons at the same time (for approx. 1 s): manual mode (pump 1),
stop and automatic mode.
All LEDs light up for approx. 2 s by way of confirmation.
Observe the following points:
• If a button is pressed when the key lock is active, all LEDs light up for 2 sec.
• The buzzer can be switched off and the collective fault signal (SSM) deactivated when
the key lock is active.
• Acknowledgement of error messages is not possible!
Description
LED lights up: Mains voltage and control voltage are on.
LED flashes: Switchgear switched on − standby mode
LED lights up: Automatic mode switched on
LED off: Pump deactivated (only Control MS-L2...)
LED flashes: Pump running during the set follow-up time.
LED lights up: Pump is running.
LED lights up: Service interval has elapsed.
LED flashes: Operating parameters exceeded.
LED lights up: High water alarm activated
LED flashes: Switchgear is operated without any load.
LED lights up: Set rated current exceeded
LED lights up: Temperature sensor in motor triggered
en
Buttons
MS-L1... MS-L2...
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