hms800w-2t stops accepting connections randomly

[Marv1995]

hello, my hms800w-2t stops acception connections after some days. it will work perfectly for 3-4 days then it stops. someone has a fix for that ?

you can even restart the inverter via the app, nothing happens. plugging it out of the wall and back in, nothing happens. the next day everything is fine again.

btw. the hoymiles cloud is updating fine

config.toml:

inverter_host = "" coop_mode = true update_interval = 60500

[simple_mqtt] host = "" port = 1883

Logs:

[2024-03-03T08:43:11Z DEBUG hms2mqtt::simple_mqtt] dtu_sn: time: 1709455397 device_nub: 1 package_nub: 1 inverter_state {inv_id: port_id: 1 grid_voltage: 2369 grid_freq: 5005 pv_current_power: 2369 unknown1: 99 unknown2: 999 temperature: 215 unknown3: 5 unknown4: 1 bit_field: 7143442 11: 59656} port_state {pv_sn: pv_port: 1 pv_vol: 329 pv_cur: 758 pv_power: 2502 pv_energy_total: 29064 pv_daily_yield: 254 bitfield: 50921472} port_state {pv_sn: pv_port: 2 pv_vol: 4 pv_cur: 1 bitfield: 50331648} pv_current_power: 2369 pv_daily_yield: 254

[2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/inverter_local_time, Pkid = 0, Payload Size = 29 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_current_power, Pkid = 0, Payload Size = 5 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_daily_yield, Pkid = 0, Payload Size = 3 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_current_power, Pkid = 0, Payload Size = 5 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_daily_yield, Pkid = 0, Payload Size = 3 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_grid_voltage, Pkid = 0, Payload Size = 5 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_grid_freq, Pkid = 0, Payload Size = 5 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_inv_temperature, Pkid = 0, Payload Size = 4 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port1_voltage, Pkid = 0, Payload Size = 4 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port1_curr, Pkid = 0, Payload Size = 4 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port1_power, Pkid = 0, Payload Size = 5 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port1_energy, Pkid = 0, Payload Size = 5 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port1_daily_yield, Pkid = 0, Payload Size = 3 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port2_voltage, Pkid = 0, Payload Size = 3 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port2_curr, Pkid = 0, Payload Size = 4 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port2_power, Pkid = 0, Payload Size = 1 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port2_energy, Pkid = 0, Payload Size = 1 [2024-03-03T08:43:11Z DEBUG rumqttc::state] Publish. Topic = hms800wt2/pv_port2_daily_yield, Pkid = 0, Payload Size = 1 [2024-03-03T08:43:13Z DEBUG rumqttc::state] Pingreq, last incoming packet before 5000 millisecs, last outgoing request before 2631 millisecs

... some pings ...

[2024-03-03T08:44:08Z DEBUG rumqttc::state] Pingreq, last incoming packet before 5000 millisecs, last outgoing request before 5001 millisecs [2024-03-03T08:44:11Z DEBUG hms2mqtt::inverter] could not connect: Connection refused (os error 111) [2024-03-03T08:44:11Z INFO hms2mqtt::inverter] Inverter is Offline`

Some Grafana Stats:

[DennisOSRM]

Interesting. Could it be a weak wifi signal?

[Marv1995]

No, its literally 2m away, just a window inbetween ^^

[Marv1995]

Just tested again, unplugged the whole system, waited 5 min, plugged back in, waited another 5 min, started the mqtt publisher, connection refused. second test, send a restart signal via app, waited 5 min, again connection refused. its pretty weird. Tomorrow everything will be okay again, i dont know why ^^

Btw. the hoymiles cloud is updating fine.

[suaveolent]

@Marv1995 @DennisOSRM this might be related to:

https://github.com/suaveolent/ha-hoymiles-wifi/issues/14

Still assessing the underlying problem.

[DennisOSRM]

Any further insights into the issue, @suaveolent ?

[Marv1995]

just an update, without touching the device, rejected connections randomly even throughout the day (inverter -> publisher (connection refused) -> mqtt broker -> nodered -> influx -> grafana, blue graph):

i will try to update my firmware on the inverter tomorrow. after that, maybe increasing my update interval from 60500ms to 5min (300000ms)

[suaveolent]

Any further insights into the issue, @suaveolent ?

Not yet, but restarting the DTU via the restart command (either via Cloud or locally via e.g. my custom component) seems to remove the update limit.

Another idea: Maybe it is an issue with the Hoymiles cloud? Since the issue appeared independent of the used integration.

[Marv1995]

quick update, after updating my dtu firmware from V00.01.05 to V00.01.11 the issue seems to be solved (7 days of testing now). if it happens again i will provide you with another update.

[Marv1995]

no problem since the firmware update. we can close this issue. btw thanks for your project 👍