12.10.6 Code 76 (Internal fault)
Grundfos mini Eye is flashing red, the displays show error code E3 and the pump stops.
Cause Remedy
Internal fault. • Replace the pump and dispose in an
environmentally sound way according to local
regulations, or contact Grundfos Service.
12.10.7 Code 85 (Internal fault)
Grundfos mini Eye is flashing red, the displays show error code E3 and the pump stops.
Cause Remedy
Internal fault. • Replace the pump and dispose in an
environmentally sound way according to local
regulations, or contact Grundfos Service.
12.10.8 Code 57 (Dry running)
Grundfos mini Eye is flashing red, the displays show error code E4 and the pump stops.
Cause Remedy
Water is missing in the system or the system
pressure is too low.
• Fill the system with the correct amount of liquid.
• Prime and vent the pump before a new startup.
12.11 Warnings
12.11.1 Code 43 (Impellers forced forward)
One indicator light in Grundfos mini Eye is yellow and rotating, the display shows error code E3 and the
pump is running.
Cause
Remedy
Other pumps or sources generate flow through
the pump even if the pump is switched off.
• Switch off the pump at the main switch. If the
light in the pump display is on, the pump is
running in forced pumping mode.
• Check the system for the correct position of the
non-return valves.
• Check the system for defective non-return valves
and replace the valves if necessary.
12.11.2 Code 35 (Air in media)
This is not shown on the operating panel. It is logged and can be seen in Grundfos GO.
Cause
Remedy
There is air in the pump and/or system. • Vent the pump and system.
• If the problem persists, investigate the system
for leakages.
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