From 0c4de2bc97ebc75130aa04f391b202793ebba9bb Mon Sep 17 00:00:00 2001
From: Otto Winter <otto@otto-winter.com>
Date: Sat, 19 Feb 2022 14:11:01 +0100
Subject: [PATCH] Publish NAN when dallas conversion failed (#3227)

---
 esphome/components/dallas/dallas_component.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/esphome/components/dallas/dallas_component.cpp b/esphome/components/dallas/dallas_component.cpp
index 1eed2ebf78..6240983798 100644
--- a/esphome/components/dallas/dallas_component.cpp
+++ b/esphome/components/dallas/dallas_component.cpp
@@ -110,6 +110,9 @@ void DallasComponent::update() {
   if (!result) {
     ESP_LOGE(TAG, "Requesting conversion failed");
     this->status_set_warning();
+    for (auto *sensor : this->sensors_) {
+      sensor->publish_state(NAN);
+    }
     return;
   }