LED on the control stead on (normal -- no flashes). When set up the thermal stat, a call for heat seems clicking, then inducer fan is on, then seems gas is on for a few seconds. But the hot surface ignitor will not turn red. The process repeated...

Clean the flame sensor...

Thanks ! No flame at all. Because flame is on, it should first ignite. It seems no electricity to the ignitor because the ignitor will not grow to red after a few seconds of gas sound.

LED on the control board stead on (normal -- no flashes). When set up the thermal stat, a call for heat seems clicking, then inducer fan is on, then seems gas is on for a few seconds. But the hot surface ignitor will not turn red.

Check for power to igniter, if power, then igniter is bad. Let me know what you find.