On 14 Jan 2007 06:18:17 -0800, "Sam" wrote:

Hello,

My gas furnace turns on if I reset the power to it and brings the
temperature up to set point. However, it seems that the next time the
thermostat sends the signal, the furnace doesn't start until I cycle
its power switch.

Please advise.

Thank you,

Sam

What senses the presence of the flame?
Heat sensor- adjust, clean or replace....
Light sensor - clean or replace