Thaks again for the reply so as larger connecting pipe feels really cool & the expansion pipe is frosting sweating defiantly a issue with to much charge as their wasn't much of a run on the pipes?
thanks clive top man!
So if you have a gauge connected to the service port on the larger valve on the outside of the outdoor unit and the pressure increases when the compressor starts then the system is operating in...
Hi yes it is a heat pump.
Couldn't low suction pressures causes coil freezing?