Explorer heater not working

[jollygrngiant]

Brian, does the fan push any air at all if it's set to heat? If it does is it warm or cool? If you drive the Explorer long enough to get up to normal operating temps can you feel any heat coming from the heater core if you have the temp switch to warm?

My first thought would be the blend door not opening. But it could be something else too.

Yes it pushes out cool air even when its set to warm. But the funny thing is, when I have the fan button off.......And I go to turn the thermo. to warm, the clicking noise starts. When I cut the fan button on, just cool air comes out.
Brian