I checked and it is not clogged/blocked. Any other suggestions? It seems to be working fine other than the light flashing and it taking 2 times to ignite. Flame doesn't appear weak, heat is blowing fine.

Hi, I have a Nordyne Furnace/AC unit with a yellow flashing light. Code reads 'weak LED flame'. When the furnace turns on it seems to take twice as long as normal. You can hear it click almost like flame is lighting but it continues to run then it clicks again and the flame lights, blower comes on a...