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von StefanD
11.12.2020, 16:18
Forum: HomeMatic - english
Thema: Minimum valve opening value for individual TRV
Antworten: 37
Zugriffe: 2067

Re: Minimum valve opening value for individual TRV

That is indeed very important: you need to block the driver before the pin in the valve is fully pressed into the radiator valve.
von StefanD
11.12.2020, 14:25
Forum: HomeMatic - english
Thema: Minimum valve opening value for individual TRV
Antworten: 37
Zugriffe: 2067

Re: Minimum valve opening value for individual TRV

I had the same problem with my Danfoss valves: They do not really open until the TRV reaches somewhere between 15 and 20%. I solved this by inserting some small metal rings (like a M3 nut) around the pin of the valve: this prevents the pin to be closed fully and thereby shifting the range of the TRV...
von StefanD
04.11.2020, 08:25
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 748

Re: HM-ES-PMSw1-PL is dead

Good news: I replaced diode D9 and now the switch functions again as it should :-)
Thanks to everyone who provided hints and tips!
von StefanD
29.10.2020, 21:05
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 748

Re: HM-ES-PMSw1-PL is dead

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 sw...
von StefanD
17.10.2020, 22:36
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 748

Re: HM-ES-PMSw1-PL is dead

No, I'm not sure the relais is defect. I am sure that the measurement of (about) 0 ohm is correct, but that is with the relais soldered to the print. I'm not sure if it's the relais that causes the short-circuit, or another component near to it... (That's why I wanted to remove the relais) I measure...
von StefanD
17.10.2020, 19:58
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 748

Re: HM-ES-PMSw1-PL is dead

Stan, Don, Thanks for your replies. I did try a bigger tip and fresh solder, but that didn't help. I don't have a variable-temperature soldering iron, just a basic Antex 25W. (I also have a big 200W Weller, but that's a bit overkill I think.) Do you think a higher temperature iron will do the job? (...
von StefanD
16.10.2020, 18:53
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 748

Re: HM-ES-PMSw1-PL is dead

I checked the fuse and the resistor. The fuse seems blown: its resistance is infinite. The resistor R2 seems OK: it still measures 1KOhm. I do wonder why the fuse is blown. Can it be that the relais draws too much current (I measure 0 Ohm on the 12V pins)? I have tried to desolder the relais from th...
von StefanD
15.10.2020, 22:23
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 748

Re: HM-ES-PMSw1-PL is dead

Thanks for the schematic! I'll check both and post the results.
von StefanD
15.10.2020, 19:54
Forum: HomeMatic - english
Thema: HM-ES-PMSw1-PL is dead
Antworten: 12
Zugriffe: 748

HM-ES-PMSw1-PL is dead

Hi all, Suddenly my HM-ES-PMSw1-PL stopped working. I was using a jigsaw connected to it when suddenly the power was cut. Even the led of the HM-ES-PMSw1-PL doesn't work anymore. It seems like a fuse has blown, however it doesn't seem to contain a fuse. I opened it, but saw nothing that seems to be ...
von StefanD
21.02.2020, 14:33
Forum: HomeMatic allgemein
Thema: Anruf per Telegram
Antworten: 58
Zugriffe: 5116

Re: Anruf per Telegram

I use the method described on this blog: https://technikkram.net/2016/03/push-na ... -versenden
It works flawlessly, I use to get notified of empty batteries and smoke detection.

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