Rick means to check the back of the unit (feel with your hand for warm air exiting) to see if any heated air is exiting out a flap that doesn't close, or doesn't close all the way. You don't list what brand/model of GC but some have this as a weak spot; Agilent GCs are excellent, but the oven flapper motor sometimes just wears out, and once I had to rivet one of the flaps back onto the rod. I doubt that you could reach 60C (unless it takes a long time) just from the heat of the inlet and detector zones, so I'll assume that your oven-heating resistor wire is OK (an either "good" or "bad" situation). Did you check that 60C with a thermometer or thermocouple as well, to make sure the oven sensor is operating correctly? If all that stuff looks good, you may need to explore an electronic problem (service call). Since you're new, isn't there anyone there with any hands-on experience? Also - all posters - please list brand and model of equipment for issues like this - we have no instrument sponsers here - we just share our experiences and knowledge.
