diff --git a/docs/dump_entities.csv b/docs/dump_entities.csv
index ad9ed0cce..30217cb4a 100644
--- a/docs/dump_entities.csv
+++ b/docs/dump_entities.csv
@@ -5865,7 +5865,6 @@ device name,device type,product id,shortname,fullname,type [options...] \| (min/
 "MX400",connect,17,dewtemperature,dew point temperature,int16,C,false,sensor.connect_src1_dew_point_temperature,sensor.connect_src1_dewtemperature,13,36,1/10,-1,1
 "MX400",connect,17,seltemp,selected room temperature,uint8 (>=5<=30),C,true,number.connect_src1_selected_room_temperature,number.connect_src1_seltemp,13,36,1/2,-1,1
 "MX400",connect,17,mode,operating mode,enum [off\|manual\|auto] (>=0<=0), ,true,select.connect_src1_operating_mode,select.connect_src1_mode,13,36,1,-1,1
-"MX400",connect,17,coolingon,cooling on,boolean (>=0<=0), ,true,switch.connect_src1_cooling_on,switch.connect_src1_coolingon,13,36,1,-1,1
 "MX400",connect,17,name,name,string (>=0<=0), ,true,sensor.connect_src1_name,sensor.connect_src1_name,13,36,1,-1,0
 "MX400",connect,17,childlock,child lock,boolean (>=0<=0), ,true,switch.connect_src1_child_lock,switch.connect_src1_childlock,13,36,1,-1,1
 "MX400",connect,17,icon,icon,enum [none\|mdi:chef-hat\|mdi:sofa-single-outline\|mdi:bowl-mix-outline\|mdi:bed-single-outline\|mdi:bed-double-outline\|mdi:teddy-bear\|mdi:shower\|mdi:laptop\|mdi:door\|mdi:palette-outline\|mdi:washing-machine\|mdi:bookshelf] (>=0<=0), ,true,select.connect_src1_icon,select.connect_src1_icon,13,36,1,-1,1
diff --git a/src/core/modbus_entity_parameters.hpp b/src/core/modbus_entity_parameters.hpp
index 9106f2d7f..d05fa78d7 100644
--- a/src/core/modbus_entity_parameters.hpp
+++ b/src/core/modbus_entity_parameters.hpp
@@ -564,10 +564,9 @@ const std::initializer_list<Modbus::EntityModbusInfo> Modbus::modbus_register_ma
     REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(dewTemperature), 2, 1), // dewtemperature
     REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(selRoomTemp), 3, 1), // seltemp
     REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(mode), 4, 1), // mode
-    REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(coolingOn), 5, 1), // coolingon
-    REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(name), 6, 26), // name
-    REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(childlock), 32, 1), // childlock
-    REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(icon), 33, 1), // icon
+    REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(name), 5, 26), // name
+    REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(childlock), 31, 1), // childlock
+    REGISTER_MAPPING(dt::CONNECT, TAG_TYPE_SRC, FL_(icon), 32, 1), // icon
     REGISTER_MAPPING(dt::ALERT, TAG_TYPE_DEVICE_DATA, FL_(setFlowTemp), 0, 1), // setflowtemp
     REGISTER_MAPPING(dt::ALERT, TAG_TYPE_DEVICE_DATA, FL_(setBurnPow), 1, 1), // setburnpow
     REGISTER_MAPPING(dt::EXTENSION, TAG_TYPE_DEVICE_DATA, FL_(flowTempVf), 0, 1), // flowtempvf