No heat car floor vent ford edge

SOURCE: clicking noise behind right side second row seat

I had the same problem. There are two regulators and the one that determines air direction is broken. The door inside is hung up and it strips the gears in the regulator. You can leave all the seats in the car but you have to remove several panels on the inside to get to the regulator. Many or them pry off. This can be risky if you are not careful and you may decide you don't want to risk it. Others need bolts removed (around the seatbelts) to remove. If you get to that point you will find two regulators that are white in color. They are anchored by 4 screws (i think) and come right out. Determine you have the proper one by toggling the face/floor button. You can follow the noise. The real problem here is with the door that hangs up. Mine hung up because the whole assembly was anchored against a big wiring harness on the back side that cracked the whole casing. Bad engineering. You may have to remove some sharp cracked pieces so the door moves easily. Problem is that you now will have a hole in your AC/Heating unit. You can replace that as well (expensive) or seal it some other way. By the new regulator from Ford and reassemble and you're done. If you are handy it should take you a couple of hours. My bro had the same problem on his Explorer and we fixed it much quicker the second time around. If you are not handy, you might want to reconsider.

SOURCE: 2004 Ford Expedition rear floor cool/heat

Item Part Number Description 1 — Air inlet door 2 — Temperature blend door 3 — Headliner airflow 4 — Auxiliary mode door 5 — Floor airflow 6 18476 Heater core 7 19860 Evaporator core 8 19805 Blower motor
The auxiliary A/C and heating system has the following features:

• The auxiliary A/C and heating system is functional whenever the instrument panel mounted A/C control is in any position except OFF.
• The auxiliary blower motor recirculates the air inside the vehicle. Outside air is not available to the auxiliary system.
• Air is cooled and dehumidified by the auxiliary A/C evaporator core only if the instrument panel mounted A/C control is adjusted to a position that requires A/C compressor operation.
• The temperature blend door and the auxiliary mode door are controlled by electric actuator motors.
• Movement of the auxiliary temperature control between COOL and WARM causes a corresponding movement of the temperature blend door to mix air flowing through and around the auxiliary heater core.
• Movement of the auxiliary mode control between PANEL and FLOOR causes a corresponding movement of the auxiliary mode door to direct air flow between the panel (headliner) registers and the floor duct.

1. Remove the RH quarter trim panel cup holder and access panel.

1. Remove the screws.

1. Disconnect the blend door actuator electrical connector.

1. To install, reverse the removal procedure.

SOURCE: PROBLEM WHEN SELECTING THE DIRECTION FOR THE AIR

Sounds like you have a supply vacuum problem. When you lose supply vacuum to the control head it defaults to defrost.

SOURCE: 2004 Ford Expedition XLT, front blend door actuator

Hope I was avle to help, glad you up and going.

SOURCE: Air is blowing out of defroster and floor but not main dash vents

Check for vacuum hose leak.