HM-ES-PMSw1-PL is dead

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stan23
Beiträge: 1266
Registriert: 13.12.2016, 21:14
System: Alternative CCU (auf Basis OCCU)
Wohnort: Altmühltal
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Re: HM-ES-PMSw1-PL is dead

Beitrag von stan23 » 18.10.2020, 09:00

Don Kanaille hat geschrieben:
17.10.2020, 11:42
I do not agree that the coil of the Relay could blow the fuse. 1A at 230 V is 230 W.
You're right, I didn't pay attention to that.

And I agree that with 25 W it is at least close to impossible to unsolder the relay.
Viele Grüße
Marco

RaspberryMatic als VM auf einem NUC mit Proxmox und USB-Funkmodul
~80 Geräte (HM, HmIP, HMW, HBW, AskSin)

StefanD
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Re: HM-ES-PMSw1-PL is dead

Beitrag von StefanD » 29.10.2020, 21:05

An update: I bought a 50W soldering station and with that, I was able to desolder the fuse and the VDR.
After I replaced both, the switch came back to life, just as you predicted :-)
Everything is OK, except that the relais doesn't switch. I have desoldered that one too and found that it's OK. It switches at 12V/36mA.
The 12V contacts on the prints are still shorted, so I expect the diode D9 to be the culprit.
I only have a simple multimeter to measure things, but I would expect the diode to show resistance at least one-way. (It shows no resistance on my multimeter, no matter how I connect the black and red probes)
What do you think?

StefanD
Beiträge: 22
Registriert: 17.11.2016, 10:42
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Re: HM-ES-PMSw1-PL is dead

Beitrag von StefanD » 04.11.2020, 08:25

Good news: I replaced diode D9 and now the switch functions again as it should :-)
Thanks to everyone who provided hints and tips!

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