Navien, ESP32 Navilink interface

Refuge · May 19, 2025, 8:16pm

Hello,
I am having issues getting data to HA and am hoping for some help.

I have an M5 atom lite/rs-rs485 connected to a Navien NPE-180S2

using this Yaml

navien.yaml

9cd4e032d

################################################################################
####                            REVISION HISTORY                            ####
################################################################################ 
# 
# 5/28/2024 revision to gas m3, ccf, and therms per discussion on community forum
#
substitutions:
  comment: "(Navien Hot Water Heater) -- Device host: redacted"
  friendly_name: Navien Water Heater
  logger_level: WARN

binary_sensor:
  - platform: status
    name: Status
    internal: True

esphome:
  name: navien
  friendly_name: Navien Water Heater

This file has been truncated. show original

and changing the pins to:

uart:
    id: uart_bus
    tx_pin: 19 #was 6
    rx_pin: 22 #was 5

I was able to add the entity into HA, but it doesn’t seem to work.
No errors in the serial console of Esphome… so not sure where to go from here. Any help would be greatly appreciated.

Thanks