back2space
19-03-2013, 01:57 AM
Just sent this to LG technical, what do you guys think. Do I have a case to complain?
Good Morning Ken,
You may remember that I bought wired remotes for my LG wall mounts at home to control the on/off times of the systems rather than using a basic timer plug setup as you said the controller had a temp sensor to better control temperature. All my indoor units are the new style Libero units and work well apart from the fact that in heating there is a 4C differential before set point reaches off. So 22C the return air sensor has to sense 26C before it will cycle off.
This in theory would work fine with wall mounts where the return air sensor is at ceiling level. In my house however we was finding that control was very poor as a set point of 22C meant 26C at ceiling level which was usually about 24C at floor level so very warm. The unit would then not reach thermostat on until the temp at ceiling level would then drop below the set point by 1C - this took ages to do as heat rises at ceiling level whilst the occupied area of the room cooled quickly.
So part of the desicion to buy the wall wired remotes is that they have sensor in that can be used so room temp is measured at approx light switch level... once this setting was activated on the remote controller I would have thought the 4C differential would not be used so that the differential would be 1C over the set point, this would then work very well. The convertable units have a switch to deactivate high ceiling level (when used at floor level) which basically cancels the differential in heating. With a set point of 22C thermostat off would be reached at 23C. However this isnt how it has worked out, if using the remote control sensor the system still tries to achieve 4C differential so these expensive controllers are nothing more than a glorified timer plug that I could have picked up very cheap! There are various options to use just the unit sensor, the remote sensor or to use an average of them both but in heating all this does is use the lower reading value and not by adding them both together so the lower reading value will always be on the controller.
When I spoke with the helping they said I will have to experiment with the set points but I said well whatever set point I choose for example I could choose 20C the room will still reach 24C before it shuts off but then the room needs to drop below 20C to 19C before thermostat on is reached. This results in large fluctuation in temperatures. The system then wastes a lot of energy running when it doesnt need to. I remember when I spoke with you that you thought there was a setting to remove the differential however there is not.
I have remained very loyal to LG and when I moved into my new house I spent a lot of money on completly new units to remove the problems I was having with the previous units. I then spent near to £400 on the remote controllers to be able to use the sensor facility to better control the temperature as this was a feature that was highlighted to me when making my decision by yourself and also LG comfort cooling. Whilst those problems have been resolved a new problem has been created which could have been resolved with a simple option in the software to remove the differential when the remote sensor is used. Is there anything that can be done as I have a heating system that has very poor control in heating mode.
The weekly timers also cannot be just turned off or deactivated without removing the controller from the wall and pressing the reset button - this occurs on all 4 controllers. They dont appear to be very well designed or fit for purpose.
Kind Regards
Good Morning Ken,
You may remember that I bought wired remotes for my LG wall mounts at home to control the on/off times of the systems rather than using a basic timer plug setup as you said the controller had a temp sensor to better control temperature. All my indoor units are the new style Libero units and work well apart from the fact that in heating there is a 4C differential before set point reaches off. So 22C the return air sensor has to sense 26C before it will cycle off.
This in theory would work fine with wall mounts where the return air sensor is at ceiling level. In my house however we was finding that control was very poor as a set point of 22C meant 26C at ceiling level which was usually about 24C at floor level so very warm. The unit would then not reach thermostat on until the temp at ceiling level would then drop below the set point by 1C - this took ages to do as heat rises at ceiling level whilst the occupied area of the room cooled quickly.
So part of the desicion to buy the wall wired remotes is that they have sensor in that can be used so room temp is measured at approx light switch level... once this setting was activated on the remote controller I would have thought the 4C differential would not be used so that the differential would be 1C over the set point, this would then work very well. The convertable units have a switch to deactivate high ceiling level (when used at floor level) which basically cancels the differential in heating. With a set point of 22C thermostat off would be reached at 23C. However this isnt how it has worked out, if using the remote control sensor the system still tries to achieve 4C differential so these expensive controllers are nothing more than a glorified timer plug that I could have picked up very cheap! There are various options to use just the unit sensor, the remote sensor or to use an average of them both but in heating all this does is use the lower reading value and not by adding them both together so the lower reading value will always be on the controller.
When I spoke with the helping they said I will have to experiment with the set points but I said well whatever set point I choose for example I could choose 20C the room will still reach 24C before it shuts off but then the room needs to drop below 20C to 19C before thermostat on is reached. This results in large fluctuation in temperatures. The system then wastes a lot of energy running when it doesnt need to. I remember when I spoke with you that you thought there was a setting to remove the differential however there is not.
I have remained very loyal to LG and when I moved into my new house I spent a lot of money on completly new units to remove the problems I was having with the previous units. I then spent near to £400 on the remote controllers to be able to use the sensor facility to better control the temperature as this was a feature that was highlighted to me when making my decision by yourself and also LG comfort cooling. Whilst those problems have been resolved a new problem has been created which could have been resolved with a simple option in the software to remove the differential when the remote sensor is used. Is there anything that can be done as I have a heating system that has very poor control in heating mode.
The weekly timers also cannot be just turned off or deactivated without removing the controller from the wall and pressing the reset button - this occurs on all 4 controllers. They dont appear to be very well designed or fit for purpose.
Kind Regards