Join Date: May 2012
Location: North Vancouver, BC
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Re: Seafrost AC refrig ("shore assist") problem
It is hard to say for sure without more information such as suction and discharge pressures, but in my experience the symptoms you describe indicate that the system is low on refrigerant. The frost at the expansion valve indicates that what little refrigerant is left in the system is flashing off before it gets to the evaporator, leaving little refrigeration effect for the evaporator. The compressor is probably short-cycling on a low pressure control. Allowing the cold plate to warm up would reduce the symptoms because the warmer plate results in higher suction pressure. I am assuming the holding plate never gets right down to temperature?
1979 Santana 30 Tall Rig
Last edited by SchockT; 09-19-2013 at 10:14 PM.