I'm a technician who is trying to get enough posts to get professional membership on this site.
I have a R-22 Lennox HP13 series that is giving a interminent problem. The homeowner says that the unit's indoor fan runs, t-stat calling for cool , outdoor fan running but compressor not running. From the last tech that was there said compressor was out on overload and got it closed up and running again and it was a fluke thing. When I arrived this morning the unit was operating normally the pressures were good I had normal superheat the approach/subcooling was off by a little. More than likely not set right by installers. But the td was 17f at the time. I know it need to be adjusted but not the issue here. I could not get the compressor or fan to stop operating while there. I did think that since its common for lennox condenser fan motors to fail that somehow the fan wouldn't run tripping the ol on the compressor and then start running again? The seal was leaking oil for the bearings. But I couldn't prove it the head pressure was only at 240 psi if I remember its on my invoice in the van. No reason to trip out the condenser coil wasn't dirty. But the homeowner called again saying this was occuring. She was able to turn it off for a few hours and back on again but today its very hot and humid and she hasn't been able too probably way to hot needs time to cool. Any thoughts?