diff --git a/components/panasonic_heatpump/panasonic_heatpump.cpp b/components/panasonic_heatpump/panasonic_heatpump.cpp
index 347f9bb..7390e58 100644
--- a/components/panasonic_heatpump/panasonic_heatpump.cpp
+++ b/components/panasonic_heatpump/panasonic_heatpump.cpp
@@ -148,7 +148,7 @@ namespace esphome
         {
           this->payload_length_ = byte_;
         }
-        // Discard message if format is wrong
+        // 3. byte shall be 0x01 or 0x10
         if (this->response_message_.size() == 3 && byte_ != 0x01 && byte_ != 0x10)
         {
           this->response_receiving_ = false;
@@ -157,6 +157,7 @@ namespace esphome
           delay(10);  // NOLINT
           continue;
         }
+        // 4. byte shall be 0x10 or 0x21
         if (this->response_message_.size() == 4 && byte_ != 0x10 && byte_ != 0x21)
         {
           this->response_receiving_ = false;
@@ -232,7 +233,7 @@ namespace esphome
         {
           this->payload_length_ = byte_;
         }
-        // Discard message if format is wrong
+        // 3. byte shall be 0x01 or 0x10
         if (this->request_message_.size() == 3 && byte_ != 0x01 && byte_ != 0x10)
         {
           this->request_receiving_ = false;
@@ -241,6 +242,7 @@ namespace esphome
           delay(10);  // NOLINT
           continue;
         }
+        // 4. byte shall be 0x10 or 0x21
         if (this->request_message_.size() == 4 && byte_ != 0x10 && byte_ != 0x21)
         {
           this->request_receiving_ = false;