
Search found 9 matches
- Sat Jan 23, 2021 1:28 am
- Forum: Opentherm Gateway Forum
- Topic: Firmware upgrade via NodeMCU
- Replies: 15
- Views: 6545
Re: Firmware upgrade via NodeMCU failed
Info: After a nodeMCU fail, I able to flash the firmware with serial interface with USB UART programmer without any problem. It is about 3$ so not a PIC programmer price 

- Thu Jan 21, 2021 6:45 pm
- Forum: Opentherm Gateway Forum
- Topic: Firmware upgrade via NodeMCU
- Replies: 15
- Views: 6545
Re: Firmware upgrade via NodeMCU failed
Same problem. One OTGW is update without any problem, the second one is not... I wait a UART-USB programmer, i hope i able to flash it with the serial intrerface...
- Thu Jan 21, 2021 10:19 am
- Forum: Opentherm Gateway Forum
- Topic: On/Off thermostat state
- Replies: 10
- Views: 3598
Re: On/Off thermostat state
i hope it not bricked...:) I started the update the remote site (with nodeMCU), but the network connection is broken, so i need to force close the OT monitor. After that, if i try to flash the firmware, every time it said "please reset the device manually..." message. (seems to not put to ...
- Wed Jan 20, 2021 9:30 pm
- Forum: Opentherm Gateway Forum
- Topic: On/Off thermostat state
- Replies: 10
- Views: 3598
Re: On/Off thermostat state
try this, but the connection is broken in update process... now the OTGW is not working. I hope it possible to re-flash the firmware via COM port...

- Wed Jan 20, 2021 6:03 pm
- Forum: Opentherm Gateway Forum
- Topic: On/Off thermostat state
- Replies: 10
- Views: 3598
Re: On/Off thermostat state
Yes, it is 4.2 version. I try to update it, it is a remote place, not so easy to access it...
Yes i use the "SH=" command to set the max CH setpoint.
Yes i use the "SH=" command to set the max CH setpoint.
- Wed Jan 20, 2021 1:11 pm
- Forum: Opentherm Gateway Forum
- Topic: On/Off thermostat state
- Replies: 10
- Views: 3598
Re: On/Off thermostat state
i See. Now my problem is that i would like to use a on/off thermostat with weather following mode. My idea is: The termostat send a simple ON/OFF signal. it set the setpint from min (10) and max (90) water temperature, and set a on/off state of the central heating. I periodically send a max CH setpo...
- Sat Jan 16, 2021 1:54 pm
- Forum: Opentherm Gateway Forum
- Topic: How to save Monitor mode state?
- Replies: 3
- Views: 2572
Re: How to save Monitor mode state?
Great, thanks a lot!!
- Sat Jan 16, 2021 12:32 pm
- Forum: Opentherm Gateway Forum
- Topic: On/Off thermostat state
- Replies: 10
- Views: 3598
On/Off thermostat state
Hello there, We connect a on/off dry contact relay thermostat to the gateway. It possible to somehow read the relay state? Any message ID that show the relay open or close state? I read this, but not so clear, how to read this value: As indicated, the gateway by default will instruct the boiler not ...
- Tue Dec 08, 2020 10:05 am
- Forum: Opentherm Gateway Forum
- Topic: How to save Monitor mode state?
- Replies: 3
- Views: 2572
How to save Monitor mode state?
Hello there,
I would like to use the OTGW with monitor mode. I able to set it with otmonitor, but every restart it chnange back to Gateway mode. How to save the actual mode?
I would like to use the OTGW with monitor mode. I able to set it with otmonitor, but every restart it chnange back to Gateway mode. How to save the actual mode?