EcoRenovator - View Single Post - Multi-compressor heat pump.

oil pan 4 · 06-24-17, 11:46 AM

The electronic expansion valve needs to restrict flow to maintain low side pressure as the compressor rate goes up and down. When the pressure drop is too great that's when you get freeze up.

06-24-17, 11:46 AM	#7
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	The electronic expansion valve needs to restrict flow to maintain low side pressure as the compressor rate goes up and down. When the pressure drop is too great that's when you get freeze up.