diff --git a/components/panasonic_heatpump/helpers.h b/components/panasonic_heatpump/helpers.h
index ec3a0cd..531f1d5 100644
--- a/components/panasonic_heatpump/helpers.h
+++ b/components/panasonic_heatpump/helpers.h
@@ -5,7 +5,7 @@
 #include <vector>
 #include <string>
 
-#define UART_LOG_CHUNK_SIZE 153
+#define UART_LOG_CHUNK_SIZE 120
 
 
 namespace esphome