Extern; Batt - Grundfos Multilift MD1 Installation And Operating Instructions Manual

12.9 EXTERN

• The red LED is flashing.
• The buzzer and the alarm symbol are on.
• Display text: EXTERN.
Cause
Flooding outside the tank. The
alarm is related to the external
level switch connected to the
controller.

12.10 BATT

• The red LED is flashing.
• The buzzer and the alarm symbol are on.
• Display text: BATT.
Cause
The battery is discharged.
Multilift MD1, MDV | Fault finding the product| 42
Remedy
Find the source of the flooding and eliminate the problem.
Remedy
Replace the battery.
Use a non-rechargeable battery.