I have three emonTxs monitoring 10 circuits in a house. They all have the ESP8266 Wifi board connected for transmission of data to the emonHub running on a pi connected to the LAN.
They are configured to connect to the MQTT broker and submit messages to a subtopic of emon. eg. emon/emonTxA
After a power outage, one of them reverts to an initial config of the MQTT server, which had incorrect credential data. Even after I correct this and hit Save, a power outage reverts to initial config on this device. The other two re-connect without issues, but had never been re-configured.
Do I need to reset the device to get it to store the config permanently? Is this a known issue?