Originally posted by hvac r us 2 Those LLS valves get pretty hot to the touch when energized. Not sure why yours would be hot while de-energized?
Probably best to have somebody check it out...
Thanks for your post. Please help me out here. I assume this thing is on the liquid line to prevent refridgernat from draining back into the compressor. I thought this was only an issue during heating. Is this thing suppose to be energized during cooling or when the system is not running at all? This thing was very hot to the touch when the system was turned off (on/off switch set to off). Just want to make sure I fully understand. My AC guy is suppose to come out on monday.
Originally posted by hvac r us 2 Typically LLS valve on a heat pump is used for long line applications (line sets over 50’)
Yes you are correct; it is to reduce liquid refrigerant migration back into the unit during the off cycle.
Heat pumps require LLS to be installed within 2’ of the outdoor unit, arrow pointing towards the outdoor unit.
LLS valve will be energized in both heating and cooling modes.
OK, but should it be energized when the system is turned off? Thanks so much.