nugent101
Dec 11, 2015, 11:59 AM
The lights are both flashing. Fans kicks on no heat
ma0641
Dec 11, 2015, 02:47 PM
This is a Goodman? Read the code flashes on the inside of the air handler door. We can't help since we don't know how many flashes you are seeing..
talaniman
Dec 11, 2015, 03:07 PM
http://www.cozyparts.com/Lennox-Parts/forum/Lennox_service_manual/Furnaces/G51MP_09-01-2007.pdf
Page 14, diagnostic codes