Search found 1967 matches
- Tue Dec 12, 2023 11:50 pm
- Forum: Opentherm Gateway Forum
- Topic: no comunication between thermostat and OTWG
- Replies: 3
- Views: 1149
Re: no comunication between thermostat and OTWG
Your thermostat will be added to the matrix if you upload a log file. 8) The presence of MsgID 9 in the sequence of messages the thermostat sends is a reasonable first indication whether the remote override setpoint functionality is available. But it's not definitive. Out of the box, an iSense doesn...
- Tue Dec 12, 2023 11:34 pm
- Forum: Opentherm Gateway Forum
- Topic: New setup - no statistics showing
- Replies: 3
- Views: 1028
Re: New setup - no statistics showing
A thermostat repeating the same request over and over is usually a sign that it didn't receive a response, or didn't understand the response it received. The timings in your log show that the thermostat is quite impatient. On average it only waits around half a second for an answer. Sometimes it alr...
- Tue Dec 12, 2023 10:27 pm
- Forum: Opentherm Gateway Forum
- Topic: How turn on heating of my DHW storage tank
- Replies: 6
- Views: 2310
Re: How turn on heating of my DHW storage tank
Your log shows that the valid range for the DHW setpoint of your boiler is 35 to 70 degrees. -0.0°C is not within that range, so that reading is probably incorrect. The thermostat (or gateway) can indicate to the boiler whether it wants to have preheated hot water available (DHW enable = true) and a...
- Sat Dec 09, 2023 1:47 am
- Forum: Opentherm Gateway Forum
- Topic: Remeha Avanta 35c and Celcia 20 - issues
- Replies: 7
- Views: 1892
Re: Remeha Avanta 35c and Celcia 20 - issues
Issue 1: I have not had reports of such problems from other Celcia 20 users. Have you looked at logs at the time this happens? Without concrete data it will be difficult to solve an issue like this. Issue 2: What firmware are you running on the Wemos? Have you tried different firmware? If it kills a...
- Fri Dec 08, 2023 5:25 pm
- Forum: Opentherm Gateway Forum
- Topic: transmit READ random OpenTherm message from OTGW
- Replies: 3
- Views: 1057
Re: transmit READ random OpenTherm message from OTGW
The documentation mentions: "Commands are terminated by a carriage return character. A line feed character is optional". As specified by RFC2234 , the "internet standard newline" is CRLF. So, as long as your TCP connection uses the internet standard newline, you can just send com...
- Tue Dec 05, 2023 4:11 pm
- Forum: Opentherm Gateway Forum
- Topic: How turn on heating of my DHW storage tank
- Replies: 6
- Views: 2310
Re: How turn on heating of my DHW storage tank
Either you are following up to a thread as if you are the original poster when you're not, or you changed user names. In any case it's confusing. Spreading information over two threads also doesn't help. Making it difficult for people to understand the situation isn't generally the best strategy whe...
- Tue Dec 05, 2023 2:12 pm
- Forum: Opentherm Gateway Forum
- Topic: Boiler not connected
- Replies: 1
- Views: 767
Re: Boiler not connected
The boiler interface of the OTGW is completely electrically separated from the rest of the device. It relies on getting power from the boiler. A thermostat also provides no power to its inputs. So connecting the boiler interface of the OTGW to a thermostat is the similar to connecting two powerless ...
- Thu Nov 30, 2023 5:30 pm
- Forum: Opentherm Gateway Forum
- Topic: Unsure about ATAG E 325C and OpenTherm support
- Replies: 2
- Views: 819
Re: Unsure about ATAG E 325C and OpenTherm support
Z-Wave is a wireless protocol that is something completely different than Opentherm. The ATAG Z-bus on the other hand is supposed to be similar to Opentherm. It is intended for an ATAG Z-thermostat (EaZy or WiZe). The manual for the boiler specifies that aside from these thermostats, any Opentherm t...
- Sat Nov 25, 2023 11:23 am
- Forum: Opentherm Gateway Forum (NL)
- Topic: Warmtepomp reageert niet niet langer op warmtevraag
- Replies: 3
- Views: 2263
Re: Warmtepomp reageert niet niet langer op warmtevraag
OTmonitor heeft daar een vinkje voor. Maar vanwege de lage baudrate waarmee de OTGW communiceert kost het versturen van een PS=1 rapport bijna een kwart seconde. Er bestaat daardoor een redelijke kans dat je 1 of 2 berichten mist. Dat kunnen net belangrijke berichten zijn. Dus liefst het PS=1 comman...
- Mon Nov 20, 2023 11:02 pm
- Forum: Opentherm Gateway Forum
- Topic: Change OTMonitor graph duration on web page
- Replies: 7
- Views: 1644
Re: Change OTMonitor graph duration on web page
I think I got it working with the latest commit on github . Binaries are available via github actions . It's no longer necessary to modify the source to change the span. Just add "span 14400" (or whatever span you want) in the view section of the configuration file. Let me know if you noti...
- Mon Nov 20, 2023 11:48 am
- Forum: Opentherm Gateway Forum (NL)
- Topic: Warmtepomp reageert niet niet langer op warmtevraag
- Replies: 3
- Views: 2263
Re: Warmtepomp reageert niet niet langer op warmtevraag
Ik heb zelf nog totaal geen ervaring met warmtepompen, dus ik ben bang dat ik niet heel behulpzaam kan zijn. Uit een enkel overzichtsrapport valt sowieso niet erg veel op te maken. Ik zou zelf een uitgebreide log van de opentherm berichten (dus niet met PS=1) van de 2 situaties (aansturing door een ...
- Mon Nov 20, 2023 11:35 am
- Forum: Opentherm Gateway Forum
- Topic: Outside temperature with SD18B20 does not work properly
- Replies: 6
- Views: 1528
Re: Outside temperature with SD18B20 does not work properly
When using the Nodo shop OTGW with a Wemos or NodeMCU, there are really actually two distinct parts of the device: The stuff around the PIC, corresponding to the original OTGW documented on the otgw site , and the Wemos/NodeMCU, which is like a mini computer talking to the OTGW part via a serial con...
- Sun Nov 19, 2023 11:09 pm
- Forum: Opentherm Gateway Forum
- Topic: no comunication between thermostat and OTWG
- Replies: 3
- Views: 1149
- Fri Nov 10, 2023 10:14 pm
- Forum: Opentherm Gateway Forum
- Topic: Outside temperature with SD18B20 does not work properly
- Replies: 6
- Views: 1528
Re: Outside temperature with SD18B20 does not work properly
There are two possibilities for connecting a DS18B20 to the OTGW: You can connect it to the PIC or to the Wemos. You only show information about the Wemos, which suggests that that's the method you're using. But then you don't have the "GPIO Sensors Enabled" option checked, which would be ...
- Fri Nov 10, 2023 9:56 pm
- Forum: Opentherm Gateway Forum
- Topic: Clarification communcation model OTGW and OTmonitor
- Replies: 1
- Views: 836
Re: Clarification communcation model OTGW and OTmonitor
The PIC communicates at 9600 baud. This speed was chosen to make sure the code has enough time to handle each command before the next one arrives. It simply is not possible to send commands quickly and overrun the input buffer. So you don't have to wait for a response before sending the next one. Mu...