EMS-ESP can't control my Bosch Condens 3000W

[davbarhu]

Dear All,

connected it to my Bosch Condens 3000W and my home network and evething seems to be okay. I can read the parameters, forward them via mqtt and so on.

Even so I can not control my boiler from the Gateway. I've tried it via the GUI of the GW and from Console too, but without any success. I do not have any other controller or thermostat on the BUS, only the boiler and your gateway. I've dived into the forums and wiki, but I feels that I got stuck.

ems-esp-bosch-condens-3000:# show EMS-ESP version 3.5.0b6

Boiler: Condens 2500/Logamax/Logomatic/Cerapur Top/Greenstar/Generic HT3 (DeviceID:0x08, ProductID:95, Version:23.12) (57) heating active: off tapwater active: off selected flow temperature: °C burner selected max power: % heating pump modulation: % current flow temperature: °C gas: off gas stage 2: off heating pump: on fan: off ignition: off oil preheating: off heating activated: on heating temperature: °C boiler pump max power: % boiler pump min power: % pump delay: burner min period: burner min power: % burner max power: % hysteresis on temperature: °C hysteresis off temperature: °C burner current power: % burner starts: total burner operating time: 519 days 4 hours 7 minutes burner stage 2 operating time: 0 days 0 hours 0 minutes total heat operating time: 492 days 2 hours 7 minutes total UBA operating time: 1820 days 22 hours 10 minutes service code number: maintenance message: H00 maintenance scheduled: off time to next maintenance: hours dhw set temperature: °C dhw selected temperature: °C dhw type: buffer dhw comfort: hot dhw flow temperature offset: °C dhw circulation pump available: off dhw charging type: 3-way valve dhw hysteresis on temperature: °C dhw hysteresis off temperature: °C dhw disinfection temperature: °C dhw circulation pump mode: 2x3min dhw circulation active: off dhw current intern temperature: °C dhw current extern temperature: °C dhw current tap water flow: l/min dhw activated: on dhw one time charging: off dhw disinfecting: off dhw charging: off dhw recharging: off dhw temperature ok: on dhw active: off dhw 3-way valve active: off dhw starts: dhw active time: 27 days 2 hours 0 minutes

Controller: HT3 (DeviceID:0x09, ProductID:95, Version:23.12) (0)

I can't see the number values in CLI as above, but I can see it via web GUI.

ems-esp-bosch-condens-3000:# show ems EMS Bus is connected.

EMS Bus info: Tx mode: 2 Bus protocol: HT3

recognized EMS devices: 2

telegrams received: 711

read requests sent: 52

write requests sent: 3

incomplete telegrams: 0

read fails (after 3 retries): 0

write fails (after 3 retries): 0

Rx line quality: 100% Tx line quality: 100%

Rx Queue is empty

Tx Queue is empty

ems-esp-bosch-condens-3000:# show devices These EMS devices are currently active:

Boiler: Condens 2500/Logamax/Logomatic/Cerapur Top/Greenstar/Generic HT3 (DeviceID:0x08, ProductID:95, Version:23.12) Received telegram type IDs: 0x10 0x11 0x15 0x1C 0x18 0x19 0x34 Fetched telegram type IDs: 0x14 0x16 0x33 Pending telegram type IDs: 0xBF 0xC2 0x1A 0x35 0x26 0x2A Ignored telegram type IDs:

Controller: HT3 (DeviceID:0x09, ProductID:95, Version:23.12)

ems-esp-bosch-condens-3000:# ems-esp-bosch-condens-3000:# show commands Available commands (=do not need authorization): system: commands lists all commands fetch refresh all EMS values info show system status publish publish all to MQTT restart restart EMS-ESP send send a telegram watch watch incoming telegrams *

boiler: boilhystoff hysteresis off temperature boilhyston hysteresis on temperature burnmaxpower burner max power burnminperiod burner min period burnminpower burner min power commands lists all commands emergencyops emergency operation emergencytemp emergency temperature entities lists all entities heatingactivated heating activated heatingtemp heating temperature info lists all values * maintenance maintenance scheduled maintenancedate next maintenance date maintenancetime time to next maintenance pumpdelay pump delay pumpmodmax boiler pump max power pumpmodmin boiler pump min power reset Reset selburnpow burner selected max power selflowtemp selected flow temperature wwactivated dhw activated wwchargeoptimization dhw charge optimization wwcirc dhw circulation active wwcircmode dhw circulation pump mode wwcircpump dhw circulation pump available wwcomfort dhw comfort wwcomfort1 dhw comfort mode wwdisinfecting dhw disinfecting wwdisinfectiontemp dhw disinfection temperature wwflowtempoffset dhw flow temperature offset wwhystoff dhw hysteresis off temperature wwhyston dhw hysteresis on temperature wwmaxpower dhw max power wwmaxtemp dhw maximum temperature wwonetime dhw one time charging wwseltemp dhw selected temperature wwseltemplow dhw selected lower temperature wwseltempsingle dhw single charge temperature wwtapactivated dhw turn on/off

ems-esp-bosch-condens-3000:#

ems-esp-bosch-condens-3000:# log trace Log level: trace 000+00:32:05.461 T 46: [emsesp] Boiler(0x08) -B-> All(0x00), UBAMonitorFast(0x18), data: 23 01 54 64 00 01 12 20 C0 80 00 80 00 80 00 FF FF FF 00 00 00 00 00 00 00 000+00:32:05.670 T 47: [emsesp] Boiler(0x08) -B-> All(0x00), UBAMonitorWW(0x34), data: 0F 02 8E 02 8E A0 00 00 03 00 00 98 58 00 0F 24 00 000+00:32:05.811 D 48: [mqtt] Publishing topic ems-esp/heartbeat (#436, retain=0, retry=1, size=290, pid=1) 000+00:32:10.132 D 49: [mqtt] Publishing topic ems-esp/boiler_data_ww (#437, retain=0, retry=1, size=461, pid=1) 000+00:32:10.236 D 50: [mqtt] Publishing topic ems-esp/boiler_data (#438, retain=0, retry=1, size=602, pid=1) 000+00:32:15.485 T 51: [emsesp] Boiler(0x08) -B-> All(0x00), UBADevices(0x07), data: 0B 00 00 00 00 00 00 00 00 00 00 00 00 00 00 000+00:32:15.710 T 52: [emsesp] Boiler(0x08) -B-> All(0x00), UBAMonitorFast(0x18), data: 23 01 52 64 00 01 12 20 C0 80 00 80 00 80 00 FF FF FF 00 00 00 00 00 00 00 000+00:32:15.920 T 53: [emsesp] Boiler(0x08) -B-> All(0x00), UBAMonitorWW(0x34), data: 0F 02 8E 02 8E A0 00 00 03 00 00 98 58 00 0F 24 00 000+00:32:16.150 T 54: [emsesp] Boiler(0x08) -B-> All(0x00), UBAMonitorSlow(0x19), data: 80 00 80 00 80 00 FF FF 00 59 04 03 D8 0B 68 57 00 00 00 0A CF FF 03 F4 B4 80 00 ems-esp-bosch-condens-3000:# call boiler heatingtemp 45 000+00:32:19.218 D 55: [command] Calling command 'boiler/heatingtemp' (heating temperature) with value 45 000+00:32:19.271 D 56: [telegram] Sending write Tx [#124], telegram: 8B 08 16 01 2D 000+00:32:19.271 T 57: [emsesp] Me(0x0B) -W-> Boiler(0x08), UBAParameters(0x16), data: 2D (offset 1) 000+00:32:19.271 D 58: [emsesp] No telegram type handler found for ID 0x16 (src 0x0B) 000+00:32:19.302 D 59: [emsesp] Last Tx write successful 000+00:32:19.302 D 60: [telegram] Sending post validate read, type ID 0x16 to dest 0x08 000+00:32:19.383 T 61: [emsesp] Boiler(0x08) -B-> All(0x00), UBAParameters(0x16), data: FF 23 64 00 00 FB 03 01 03 64 0A 02 000+00:32:19.614 D 62: [telegram] Sending read Tx [#125], telegram: 8B 88 16 00 1B 000+00:32:19.614 T 63: [emsesp] Me(0x0B) -R-> Boiler(0x08), UBAParameters(0x16), length: 0x1B 000+00:32:19.664 D 64: [emsesp] Last Tx read successful 000+00:32:19.664 T 65: [emsesp] Boiler(0x08) -W-> Me(0x0B), UBAParameters(0x16), data: FF 23 64 00 00 FB 03 01 03 64 0A 02

The heating temp changing was just an example. I can not change any parameters.

Thank you in advance, Best regards, David

[MichaelDvP]

The missing numbers is a bug in b6, the serialized json numbers have to be read as<std::string> I'll add a commit to my PR.

The tx write look ok, the data is sent and the boiler acknowledged, but value is not set. Depending on boiler type and controller some values can not be changed or set back after a short while. But there is no know list of these types, you have to test which values can be changed.

[davbarhu]

Thank you MichaelDvP. Regarding to the tx write, I can accept it, but I do not have any parameter what can be changed via the EMS-ESP. That's the strangest thing in my case. If I could turn on/off the heating somehow, I'd be happy.

[MichaelDvP]

Yes, it's difficult. I have this controller: and changing a temperature only works if the rotarys are set AUT. Switching on/off is not possible, also set by the knops. I've read that on other controllers it is possible to send temperaturs lower than the controller setting, but not higher. Some completly electronic setable controllers allow to change all values. A new idea from a recent discussion and test: device-ID 0x12 is normally a alarm module that allows setting the flowtemp by a analog input. Try to set ems-esp to id 0x12 and then try changing selflowtemp and selburnpow. Maybe this works.

[davbarhu]

MichaelDvP you are a genius. I have the same issue what you have mentioned. I can lower the values, but I can not set higher values than the controller settings. We solved it! Thanks a lot!

[LordTompa]

Hi, I think I have exactly the same problem. Could someone explain to me how to set the device ID to device ID 0x12? I'm new with the EMS-ESP and I'm at a loss. Thanks for your help

[proddy]

we removed the Alarm Module 0x12, can't remember why though.

[MichaelDvP]

we removed the Alarm Module 0x12, can't remember why though.

Because the thermostat is flooding the bus with version requests to alarm module. This stops if we reply wth a valid version, but we don't know what is reconfigured because of this information.

The working solution for this issue was to set the flowtemp high on the control and only send lower values, this works from any device, no need to emulate a alarm module. The alarm module solution is a guess, not validated that it works. Not tested to side effects.