[danclark]

Blinks 8 times and my manual only goes up to 7 blinks

[wmproop]

Kill the power to furnace, after a few minutes, turn it back on,, watch the blinking lights and count them again,,

[danclark]

Done that, still blinks 8 times. It starts with 2 clicks from circuit board then flue fan comes on for about 3 to 5 second then shuts off. No heat bar no nothing

[mygirlsdad77]

Code 8 means an igniter circuit problem. So basically, you have a bad glow plug, or a miswired glow plug, or a bad control board. NIne times out of ten, it is a fualty glow plug (hot surface igniter). Check the glow plug for continuity, if none, its shot. Goodman/Amana added codes 8,9, and 10 a few years back, but it was a real pain trying to figure out the codes before they revised, as a code that isn't shown in the book made many people think the control board was fualty when it wasn't. Hope this helps.

[sctaylor84]

Change board

[mygirlsdad77]

The board is the last thing you change, after you have eliminated every other possible cause of the problem.