Overview Of Alarm And Warning Codes; Resetting Alarms And Warnings Manually With Grundfos Go; Alarm And Warning Code Logs; Automatic Deblocking - Grundfos ALPHA Installation And Operating Instructions Manual

12.2 Overview of alarm and warning codes

Fault chart
Code on
Grundfos mini
operating
Eye
panel
E1
E2
E3
E4
E3
- *
* This error is not shown on the operating panel. It is logged and can be
seen in Grundfos GO.
Code in
Fault
Grundfos GO
51 Blocked motor
40 Undervoltage
Forced
29
pumping
4 Overvoltage
72 Internal fault
76 Internal fault
85 Internal fault
57 Dry running
Impellers
43
forced forward
35 Air in media
12.3 Resetting alarms and warnings manually with
Grundfos GO
1. Go to Alarms and warnings.
2. Press Reset alarm.
All current alarms and warnings have been reset. However, if
the fault causing the alarm or warning has not been removed,
the alarm or warning will appear again.
3. If you want to delete all alarms and warnings from the history
log, press Show log > Reset alarm and warning logs.

12.4 Alarm and warning code logs

Grundfos GO will save up to 40 alarms and warnings in total in the
Alarms and warnings menu.

12.5 Automatic deblocking

In case of a blocked rotor, the pump will start vibrating automatically
with a frequency of around 3 Hz during startup. Any dirt deposits
that might prevent the impeller from rotating will be broken up
swiftly, and the pump will resume normal operation.
Related information
12.8.1 Code 51 (Blocked pump)

12.6 Overheated boiler

Cause
The flow is too low.

12.7 Noise in the system

Cause
The flow is too high.

12.8 Alarms

12.8.1 Code 51 (Blocked pump)
Grundfos mini Eye is flashing red, the displays show error code E1
and the pump stops.
Cause
The pump is blocked.
Related information
12.5 Automatic deblocking
Remedy
• Increase the flow.
Remedy
• Lower the flow.
Remedy
Only a qualified specialist must
perform such work.
1. Isolate the pump.
2. Remove the pump head.
3. Remove the deposits.
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