Tech found high suction pressure and low discharge pressure, both unstable, increasing and decreasing in an unusual manner. Subcool and superheat were both out of desired range, neither one was stable. Tech cycled reversing valve (see video), revealing a malfunctioning compressor. Tech suspects the internal compressor seals are leaking, and the compressor should be replaced. Confirmed with second opinion. Informed customer we can replace the compressor or the whole system and provided pros and cons to both options. Customer decided to replace compressor and if there are any major issues in the future, he will replace the system. Easy access to receptacle.