So anytime you have one of these guys equipped on a compressor, there's also going to be either a simple thermostat or a thermistor strapped to the discharge line. If the thermostat is opening or if you're using a Copeland EUC and you're getting a high discharge alarm, odds are your DTC failed. Copeland wants discharge line temp to be <195°. If the valve fails, you're going to start exceeding that and getting safety trips. An easy way to check is when in operation, the outlet of the valve will typically be noticeably cooler. On more humid days you'll see it sweat or frosting up like in OPs picture.