Air Conditioner Re: High Discharge Pressure / High Head Pressure As the system runs in the cooling mode, the discharge pressure exceeds the normal operating pressure. The YCD units typically use an orifice at the indoor coil instead of an expansion valve. Therefore, the sight-glass and...

"NON-EXPANSION VALVE" SUPERHEAT CHART Return Air WB Outdoor Air DB Temp 55 60 65 70 75 80 85 90 95 100 105 110 115 76 45 43 41 39 37 33 31 29 27 27 26 25 23 74 42 40 38 36 34 30 27 25 23 ...

Air Conditioner: YCJD Re: Compressor Locked-Up, Compressor Doesn't Start or Has Difficulty Starting The YCJD air conditioner uses a micro-channel outdoor coil. In many cases, this smaller coil area causes the compressor to have difficulty starting. In some cases, the compressor may appear...