Mercury Repair Questions? Ask a Mechanic for Answers ASAP
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Nathan,Are you working on an electronic system (buttons) or a Manuel system ( knobs)?
Okay before we do anything can you run the self test on the control panel for me. See the steps to do this in the link below.https://dl.dropboxusercontent.com/u/104923897/Self%20test%20Oct%2028.pdf
Okay what where the results?
The code 40 indicates you have a Ambient temperature sensor short to ground , this could keep the compressor from running but not effect the air flow. Have you pressure tested the AC system and if so what are you pressure reading?
Which test do you want to run, I suspect you have two issue here. One being a failing control panel and one being a bad Ambient temperature sensor providing the system is full of Freon and the pressure are right.
All you need to do is connect a set of AC gauges to the AC service ports and read the systems pressure. Normal pressure on a full system with the AC off should be right at 100 to 110 on the low side and the high side. Normal pressure on a full system with the compressor running should be right at 35 to 40 PSI on the low side and right at 200 to 210 PSI on the high side.
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