diff --git a/components/ecodan/fields.h b/components/ecodan/fields.h
index 871a6ab..fcaa294 100644
--- a/components/ecodan/fields.h
+++ b/components/ecodan/fields.h
@@ -58,6 +58,10 @@ DEFINE_FIELD(water_feed_temperature, 0x0c, 6, VarType_TEMPERATURE);
 DEFINE_FIELD(water_feed_temp_signed, 0x0c, 8, VarType_ONE_BYTE_TEMPERATURE);
 DEFINE_FIELD(water_return_temperature, 0x0c, 9, VarType_TEMPERATURE);
 DEFINE_FIELD(water_return_temp_signed, 0x0c, 11, VarType_ONE_BYTE_TEMPERATURE);
+DEFINE_FIELD(mix_tank_feed_temp, 0x0d, 6, VarType_TEMPERATURE);
+DEFINE_FIELD(mix_tank_feed_temp_signed, 0x0d, 8, VarType_ONE_BYTE_TEMPERATURE);
+DEFINE_FIELD(mix_tank_return_temp, 0x0d, 9, VarType_TEMPERATURE);
+DEFINE_FIELD(mix_tank_return_temp_signed, 0x0d, 11, VarType_ONE_BYTE_TEMPERATURE);
 DEFINE_FIELD(hot_water_temperature, 0x0c, 12, VarType_TEMPERATURE);
 DEFINE_FIELD(runtime, 0x13, 8, VarType_RUNTIME);
 DEFINE_FIELD(water_flow, 0x14, 17, VarType_DECVALUE);