What is the LP vacuum reading?
If LP reading is abnormally low, check if the low pressure hose and metal end areas are cooler than evaporator. If yes, you have clogged or kinked low pressure hose parts.
If the temperature around the expansion valve is too low compared with that around receiver drier, the high pressure line is clogged. It could be a failed expansion valve. During discharging prior to repir, if pressure had been released too fast, it can damage the expansion valve.
Sunday, May 8th, 2011 AT 11:46 AM