sycomore
Oct 5, 2011, 08:14 PM
I have a heil high efficient furnace that ignites fine but when blower starts gas valve shuts down
wmproop
Oct 6, 2011, 05:10 AM
You might try cleaning flame senser with very fine sandpaper or steel wool
sycomore
Oct 6, 2011, 07:37 PM
Gas valve actually cuts off just before fan starts up like fan limit is causing it. Fan limit is time delay. Could it be fan control or fan relay