Gas boiler pilot won't stay lit
This morning, I found the boiler pilot light was out. I followed directions found on a DIY website. I lit the pilot, while pressing the red reset button for 30-60 seconds. As soon as I let go of the button, the pilot immediately goes out. The flame is blue. Is this the thermocouple? If so, what is the average life of a thermocouple? This would be the third time I've had to have the thermocouple replaced... they seem to cease working properly after about 2 year or so. Is there anything else I can do myself before I have to call in the professionals? Thanks.