Mini splits need to have the refrigerant weighed in. First, ( if the system is already empty ) pull a vacuum down to 500 microns. Second, add the amount of refrigerant listed on the mfg. tag. Hope this helps!
SOURCE: I am trying to decide which 12000 btu Mini-split
HAVE HAD VERY GOOD EXPERIENCES WITH BOTH UNITS BUT I THINK DEPENDING ON MODEL THE LG IS BETTER
SOURCE: doesn't work get the code HS ?
check your filters and coils for blockages , both these codes are pressure related , if the filter is blocked the system will not create the desired environment for the refrigerant to work properly as it is directly related to increasing and decreasing temperature .
SOURCE: I have a Toyo Aircon
You might want to refer to the unit manual, which has a fault code section (if the unit has a manual), look up the fault code E8, in the manual and it will tell you what fault it is. Depending on where the unit was manufactured, you may not be able to contact anyone regarding the warranty or diagnoses of the fault, so instead contact your local A.C company for help. Sorry I could not be of more help.
SOURCE: Gold Star mini split heat pump 24,000
On a heat pump the difference from heat to cool is the reversing valve.
In cooling or heating the Y1 terminal will always be energized, this is the contactor.
Depending on brand the reversing valve will either be energized in Heat or Cool. At the outdoor unit check to see if the reversing valve is getting 24 volts in cool, if not check to see if it is getting 24 volts in heating. The easiest way to check if the reversing valve is shifting, is to feel the big copper tube, (it is not the suction line on a heat pump) this is a refrigerant vapor line. It will be cold in cooling and hot in heating.
Check your thermostat installation instructions and heat pump installation instructions to determine the proper terminal designations for your heat pump and thermostat. There are some brands out there that use the B terminal as common to the 24 volt circuit, so you have to check the wiring and make sure this is not common.
If it is energized in Cool then the Y1 and O terminal will be energized. You will have 24 volts from common usually the C terminal to Y1 and O.
If it’s energized in Heat then the Y1 and B terminal should be energized. You will have 24 volts from common usually the C terminal to Y1 and B.
If you get heat when you’re calling for cooling or vice versa then switch the wire between the B and O terminals.
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