I just bought an LG 8000 BTU window air conditioner, model LWHD8000RY6. The unit has a digital thermostat, which on its lowest setting displays 60 degrees. However, it is not possible even on this lowest setting to get the machine to put out cold air below about 69 degrees. Note I do not mean the machine does not have the capacity to cool the space (a bedroom of about 175 sq') below 69 degrees, but rather, the thermostat shuts the compressor off at 69, even when it is set at "60". I tried moving the electronic temp sensor (thermistor?) from the front of the evaporator to a position out in the room, thinking this spot would be warmer & therefore the unit would run longer. This dropped the room temp about 2 degrees further, to around 67. My wife & I would prefer about 65, if not lower, for sleeping. Again, this is not a case of the unit lacking the cooling capacity to reach lower temps, the thermostat just won't turn the compressor on any lower. So I am wondering if there is generally a way of adjusting these digital thermostats (I had a similar issue with a unit having an old style mechanical thermostat, the type which can be adjusted be varying the spring tension on the thermostat, tweaking this I was able to get the unit to attain a lower temp). Perhaps there's a trimmer pot on this electronic thermostat which can be tweaked? As a second option, maybe I could connect a wall mount thermostat of the type used on a central air unit, which would be more accurate. Does anyone know if this can be done? I'm guessing the thermostat on a window unit directly turns the compressor on and off, and therefore has the current switching capacity required for this, while a wall mount type for a central unit probably signals a central control board on the furnace/ac, which has a relay that does the actual switching. Is this the case? I could probably set up a relay, still we're beginning to get to the point of a lot a screwing around by that time. Anyone have any ideas?
TIA
Dan