I have a Lennox Wisper Heat Central Forced air natural gas furnace model #
G20RQ3XE-75-1 with a problem
The problem is this
Turn on thermostat
after a few seconds small flame appears
igniter keeps clicking
blower fan turns on blowing cold air
igniter keeps clicking for a few minutes with small flame present , large
burners never turn on.
after a few minutes the igniter stops clicking and the small flame goes out.
is there a small primary burner what I am seeing and a larger secondary
burner that never turns on? what would cause this.
I have a dvm and am handy, can perform tests and checks.