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Heater air conditioner unit does not expel air

Heater air conditioner unit does not distribute air conditioning from the open vents thoughout the house. Heat comes out fine. I can hear the fan running, and the unit is condensating on its piping. The large fan located outside is also running. I have lowered the temperature settings, and have tried both auto and manual settings on the Honeywell microprocessor themostat. Is there a damper at the unit that needs to open for air conditioning.

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Unless you have zones installed i.e. day and night you will probably find that the main duct off the unit has fallen off

Posted on Jun 16, 2009

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Posted on Jan 02, 2017

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1 Answer

Air conditioning will not switch from defrost vents


Vacuum control motors are used to position these airflow control doors.
SECTION 412-01: Air Distribution and Filtering 2000 Expedition/Navigator Workshop Manual DESCRIPTION AND OPERATION Procedure revision date: 06/17/1999 Air Distribution There are two sources of air available to the air distribution system:
  • outside air
  • recirculated air
Recirculated air is only used during MAX A/C, AUTOMATIC (if equipped with EATC) and OFF modes.
Air distribution within the vehicle is determined by the function selector switch position, if equipped with manual A/C, or is controlled by the electronic automatic temperature control system in the AUTOMATIC mode but can be overridden by the driver if desired. Airflow control doors are used to direct airflow within the heater air plenum chamber. Vacuum control motors are used to position these airflow control doors.
The air distribution system is designed to provide airflow from the defrost nozzle when no vacuum is applied to any of the vacuum control motors. This is done to prevent a situation where defrost cannot be obtained due to a system vacuum leak.
Air enters the passenger compartment from the:
  • instrument panel A/C registers.
  • heater outlet floor duct.
  • windshield defroster hose nozzle.
  • side window demisters.
  • rear seat airflow duct (if equipped).
Passenger compartment air is exhausted from the vehicle through open windows or cab air vents.


expedition air flow hvac system-xvcmtr1jbqa4kfrdszeh0lpe-3-0.gif Item Part Number Description 1 18A318 Vacuum control motor - panel/defrost door 2 18A478 Panel/defrost door (full vacuum position) 3 - Defrost airflow 4 - Side window demister airflow 5 18B545 Temperature blend door (full heat position) 6 19860 A/C evaporator core 7 19A813 Air inlet duct door (full vacuum position) 8 - Outside air inlet 9 18A318 Vacuum control motor - air inlet duct door 10 - Recirculated air inlet 11 19805 Blower motor 12 - Vacuum to emission control 13 - Vacuum from the engine intake manifold 14 19A563 A/C vacuum check valve 15 19A566 A/C vacuum reservoir tank and bracket 16 19B888 A/C-heater function selector switch 17 18476 Heater core 18 18A559 Floor/panel door (full vacuum position) 19 - Floor airflow 20 18A318 Vacuum control motor - floor/panel door 21 - Panel vent airflow
Check vacuum control to the panel defrost motor ( vac,diaphragm )

Nov 01, 2017 | 2001 Ford Expedition

1 Answer

How do i know the vent is closed on the air condition


I'll do my best on this . i open and close it .. if you can check the tempiture of the discharge air coming from the unit if its cooler the vent is closed . I hope this helps let me know

Jul 22, 2011 | Emerson Quiet Kool 12NW46K Air Conditioner

1 Answer

Why does the air conditioner leak water from behind the unit. My air conditioner is placed in a wall and the back end of the conditioning unit sticks out inside the garage. I have ventilation by...


It is normal for an air conditioner to leak water out the back. This water is actually the humidity being taken out of your house. Being vented out in to the garage is always an issue with condensate water. I have seen some people take a funnel and run a hose outside the garage somewhere. Keep the vent closed. It will be harder to cool the house with the vent open because it lets outside air in to the house.

Jul 04, 2011 | Friedrich Heating & Cooling

1 Answer

Finding a suitable thru the wall air conditioner


Hi,
Not exactly....if you can half or more of the side vent exsposed then you will be okay...I like the side vent models because they are less prone to recycling the air...they either pull in the side and expell out the back or visa versa...
On the total back models all the air is just pulling and pushed out the back and they are prone to overheating in some wind conditions...the air just recycles...
Of course the main problem is that most people fail to keep their unit cleaned properly and that causes the overheating...

Window Air Conditioners - Clean them every year
http://www.fixya.com/support/r3623253-window_air_conditioners_clean_every_year

heatman101

Jul 20, 2010 | Kenmore Heating & Cooling

1 Answer

Unit releases xcessive amounts of water when


Part of an air conditioners job is to remove humidity from the air. The more humid it is, the moisture it will remove from the air. Some thru-the-wall/window air conditioners have fresh air vents. Ensure the fresh air vents are closed and make sure there is no air leakage around the unit & wall.
Keep your air filter and coils clean. If your unit has multiple blower speeds, use high speed during the more humid conditions.
I hope you find this information helpful moving forward. :-)

Apr 02, 2010 | Frigidaire FAC126P1 wall/window Air...

1 Answer

Vent selctor works but vents dont change


the mode selector is actuated by Bowden cables. When you turn the selector switch, the cable winds on a spool and that rotates the mode door. the cable may have come off either end. You need a U shaped set of radio puller tools that go in the 4 holes in the front of the radio. Then you slide the Us to the outside to compress the clips and allow to pull the radio out. Then there are 4 screws to remove to remove the finish bezel. Then 3 screws hold on the climate control head.

With the radio out, you can rotate the selector knob and see what it is doing. If you remove a cable, rotate it counterclockwise fully before disconnecting it.

You can buy a whole head for $10 used at car-part.com. look on page with * for lowest cost part. You can use 2000-07 contol head.

Please rate, thanks
------------------------------------------------------------------------------------------
Air distribution operating cables
The air distribution switch operates with two Bowden cables. The cables operate the air distribution valves in the heater housing.
To remove and install the cables, the rotary switch must be turned as far as it will go to the left. The air flap mechanism engages easily in this position, making the installation of the cables easier.
-------------------------------------------------
  1. Remove the radio/cassette unit and the CD player (if equipped). For additional information, refer to Section 415-01 .
  2. Using a common radio remover, detach the audio unit.
  3. Insert the common radio remover into the locating holes. Pull the tools gently to the outside of the audio unit to release the locking tangs.
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  1. Slide the audio unit out of the instrument panel.
  2. Remove the bezel with heater/air conditioning controls.
  3. Remove the bezel with heater/air conditioning controls (continued).
    • Pull off seven electrical connectors (six shown).
  4. NOTE: To remove the Bowden cables, turn the rotary switches as far as they will go to the left.
    Remove the bezel with heater/air conditioning controls (continued).
    • Unclip the Bowden cables.
  5. Remove the lower driver's side footwell trim.
  6. Unclip and remove the air distribution Bowden cables.
  7. Unclip and remove the temperature control Bowden cables.
    • Unclip and remove the temperature control Bowden cables.
Installation
  1. NOTE: Route the new Bowden cables without kinks and check for easy accessibility.
    NOTE: To install the Bowden cables, turn the rotary switches as far as they will go to the left. The mechanism engages easily in this position.
    NOTE: The Bowden cables are identical for RHD and LHD vehicles, although they are fastened to the air flap operating mechanism with the reverse side of their connectors.
    Install the components in reverse order.
  1. Check operation of the Bowden cables

Sep 18, 2009 | 2005 Ford Focus

1 Answer

2001 ford focus defroster blows out ac vents


may be just a cable adjustment.


SECTION 412-01: Air Distribution and Filtering 2001 Focus Workshop Manual DESCRIPTION AND OPERATION Air Distribution and Filtering The new heating and ventilation system ensures even air distribution.
The temperature control and air distribution flaps are controlled by two operating cables. All vehicles have a recirculated air function, with the flap controlled by a servo motor.
Air is supplied to the windscreen and side windows regardless of the air distribution setting.
The clean air filter is fitted as standard in most countries. This cleans the incoming fresh air of pollen and dirt particles. It must be renewed after every 40,000 km under normal operation conditions, or after 20,000 km under difficult conditions. If no clean air filter is installed, a plastic grille is fitted over the air intake. This can easily be replaced with a clean air filter.
Air distribution operating switch
Face level The main flow of air enters the passenger compartment at face level.
Face level/floor level The main flow of air enters the passenger compartment in equal parts at face level and floor level, and a small amount flows to the demister nozzles of the side windows.
Floor level The main flow of air enters the passenger compartment at floor level, and a smaller amount flows to the demister nozzles of the side windows.
Demist/floor level The main flow of air enters the passenger compartment in equal parts at the windscreen and at floor level, and a smaller amount flows to the demister nozzles of the side windows.
Demist The main flow of air enters the passenger compartment at the windscreen and a smaller amount flows to the demister nozzles of the side windows.
Air distribution operating switch Air distribution operating cables
NOTE: The Bowden cables for LHD and RHD vehicles are identical. However, they are fastened to the air flap operating mechanism with the respective reverse side of their connectors.
The air distribution switch operates with two Bowden cables. The cables operate the air distribution valves in the heater housing.
To remove and install the cables, the rotary switch must be turned as far as it will go to the left. The air flap mechanism engages easily in this position, making the installation of the cables easier.
--------------------------------
Air Distribution Cable Control Assembly Removal
s1y~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Disconnect the battery ground cable. For additional information, refer to Section 414-01 .
  1. Remove the radio/cassette unit and the CD player (if equipped). For additional information, refer to Section 415-01 .
  1. Remove the bezel with heater/air conditioning controls.
  1. Remove the bezel with heater/air conditioning controls (continued).
    • Pull off seven electrical connectors (six shown).
  1. NOTE: To remove the Bowden cables, turn the rotary switches as far as they will go to the left.
    Remove the bezel with heater/air conditioning controls (continued).
    • Unclip the Bowden cables.
  1. Remove the lower driver's side footwell trim.
  1. Unclip and remove the air distribution Bowden cables.
  1. Unclip and remove the temperature control Bowden cables.
    • Unclip and remove the temperature control Bowden cables.
Installation
  1. NOTE: Route the new Bowden cables without kinks and check for easy accessibility.
    NOTE: To install the Bowden cables, turn the rotary switches as far as they will go to the left. The mechanism engages easily in this position.
    NOTE: The Bowden cables are identical for RHD and LHD vehicles, although they are fastened to the air flap operating mechanism with the reverse side of their connectors.
    Install the components in reverse order.
  1. Check operation of the Bowden cables.

Mar 17, 2009 | 2003 Ford Focus

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