Grundfos Alpha2 L Pump - Control Panel Flashing, All LEDs Blinking, Troubleshooting & Fixes

Hello
I have a Grundfos Alpha2 L pump. After connecting the power supply on the panel all the LEDs are blinking and nothing works. Can it be fixed?

Everything is described in the manual. Just take a look. greetings

I only have the pump, no papers.

The manual is available on the manufacturer's website.

Instructions for the Grundfos Alpha2 L pump in the appendix.
Grundfos A...pha2 L.pdf Download (7.63 MB)

However, the manual does not respond to the blinking LEDs on the control panel after the power is applied.

Chapter 11. Troubleshooting - page 23 of this manual.

I also have a problem with this pump. POWER LEDs are off and the rest are on simultaneously. What should be the supply voltage to control the board? There is a chance to get a working plate? There are nowhere in the websites - no spare parts for pumps of this type.

Take good photos of the electronics

I think it was about a glitch that I am also experiencing ...
Everything just lights up and dims - there is no E ... the autoadapt is trying to ignite the hardest ...

So take photos of the electronics board too. We will estimate what might have gone wrong.

banita_1 wrote:

I think it was about a glitch that I am also experiencing ...

How many years / months did your pump run as a failure-free device?

I have an old pump that is 12 years old and spinning. And reading various posts on the Internet, I have the impression that in these modern, energy-saving pumps, the weakest link is electronics, which, if it collapses after a few years, the pump is suitable for scrap, because an authorized service does not repair it.
Why is the EU not fighting for ecology and will not guarantee the option of replacing electronics with a new one. As you can see, ecology is empty words, because being ECO is promoted only when it is convenient, profitable for the promoter and specific interest groups.

I know that the topic is old, but maybe it will help someone. I also had the control panel on the Grundfos Alpha 2 pump flashing, and the pump did not work. The replacement of capacitors on the electronics board helped: one smd 47 uF / 35V electrolyte and 2 MKP or MKT 150 nF / 275V. Someone somewhere wrote about it on the net, it helped me. I replaced without checking the old ones (I had nothing) and maybe not all I need, but the cost is small, so I did not think about it.

Thanks a million. I had the same flashing light. Changed the capacitor and it worked like a charm. Capacitor cost approx. 10 usd.

Has anyone measured the voltage on the SMD 47uF capacitor?
After replacing it, I have 15 V.

Just replace the 47uF / 35V SMD capacitor and it works. I did.