In this module, you will gain practical insight into how to interpret troubleshooting issues. It will cover specific warnings and alarms and provide you with the knowledge required to help diagnose issues with the ALPHA HWR and ALPHA COMFORT SYSTEM pumps.
When a pump problem occurs, troubleshooting can be time-consuming. Unidentified issues often lead to unnecessary call backs and identifying the problems can be a long process, which you may not be able to invoice.
Both the ALPHA HWR and ALPHA COMFORT SYSTEM pumps have been designed with intuitive troubleshooting, warning, and alarm functions to help you quickly and easily identify and overcome pump problems.

The ALPHA HWR and ALPHA COMFORT SYSTEM pump displays show three central eye lights:
Green means running
Yellow means warning
Red means alarm

On the ALPHA HWR, the display can provide you with a readout of the flow,… temperature… and electrical power consumption, which can be used to identify where to look for the root cause.

By connecting either pump via Grundfos GO, you will also be able to access historical trend data for flow, head, temperature, and on-cycle durations as well as past warnings and alarms.

The homeowner can send this data to an installer in the form of a report from the Grundfos HOME app. This can help identify the root cause behind the problem before the installer visits the home, helping them better prepare for the visit.

Let’s take a closer look at some specific warnings and alarms. The dry run alarm can be identified by two blinking red eye lights and the ALPHA HWR will show the value E4 on the display readout while both pumps will show the description of the alarm in the Grundfos GO app.
If either pump runs without water, the dry run protection feature will stop the pump automatically to prevent damage. The pump will try to restart continuously to detect if water has returned.
 
The pump blocked alarm stops both pumps and can be identified by two blinking red eye lights. The ALPHA HWR will show  the value E1 on the display readout while both pumps will show the description of the alarm in the Grundfos GO app.
To remedy this alarm, consider checking the system for impurities and remove any that may be found.
The under-voltage warning can be identified by a rotating yellow eye light and the ALPHA HWR will also show the value E2 on the display readout, while both pumps will show the description of the warning in the Grundfos GO app. It suggests the pumps are not performing as expected. Action is only needed if either pump is underperforming or delivering discomfort.

To remedy this warning, make sure the supply voltage is within the specified range. If an electrical fault is detected, the pumps will stop running and show two blinking red eye lights.
The ALPHA HWR will show the value E3 on the display readout while both pumps will show the description of the alarm in the Grundfos GO app.
Electrical faults usually indicate that the pumps will need to be replaced.

That covers our overview of the APLHA HWR and ALPHA COMFORT SYSTEM troubleshooting, warnings, and alarms.

Thanks for watching!