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Wont switch to cooling when thermostat is switched blows hot air

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  • William Goodman
    William Goodman Apr 22, 2015

    What kind who what where :) model num mnufcturer nd what are wr working on?

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  • Contributor
  • 40 Answers

Is the knob stripped?

Posted on Apr 22, 2015

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6ya6ya
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Posted on Jan 02, 2017

  • 263 Answers

SOURCE: Air conditioner wont cool

the compressor has a capacitor that helps to start the compressor if the compressor does not reach the speed required to jump from the start coil to te continum work in about 10 sec the termic protector disconect the compressor for about 5 minutes but the blower or fan does work just blowing the air and that is not cold

Posted on Dec 31, 2007

  • 958 Answers

SOURCE: RobertShaw Thermostat 9600 problem

verify if you have separate units for each floor.

the ones working could be a complete separate unit from the one having problem.

look at the condensing units you got outside , how many are there?
if you have 3 units outside and you have 3 thermostats, then each thermostat is controlling individual split units.

we have to concentrate on the one that is not cooling. give me the details on what is going on with problematic one.

is the outside unit running?
is the outside fan running?
can you distinguished if the compressor is running the same time as the fan?

tnx 4 using fixya,

drcool

Posted on Sep 14, 2008

diths_kri
  • 67 Answers

SOURCE: furnace blowing cold air

THERMO

Posted on Jan 07, 2009

  • 659 Answers

SOURCE: wont no water to empty or drain

Either the unit is really dirty or it is low on refrigerant. A unit tha is low on refrigerant will start off cold and withing a few minutes, start warming up. If you aren't seeing any water its because of one or both causes listed.

Posted on Apr 01, 2009

mcgyver468
  • 710 Answers

SOURCE: Bryant Legacy Line air conditioning not blowing cool air..

Your outdoor condenser is in heat mode. Check the wires on the thermostat. Sounds like a small wiring problem and nothing else. Good luck. Please keep me posted as to you progress.

Posted on Apr 27, 2009

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1 Answer

Unit not working correctly. The unit worked for the winter, few days ago I turn on the AC and noticed that it wasn't cooling like it should.


It's could be the board or a heat relay. See if you have 24 volts on "x2" im assuming, emergency heat when in cool mode if so it's the board. Or unhook black or x2 or your emergency heat from board and run unit in cool. If heat stays on its a relay

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there are few things you need to check out:
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1 Answer

What's going on -- Vents are blowing hot air and


It sounds like the unit is stuck in the heat mode or the thermostat switch is still on heat. If the switch is in cool then you can go to the outside unit and locate the reversing valve. It may be stuck in the heat position. You can tap it with the handle of a screwdriver but only on the ends and very lightly because if you dent it the valve will be stuck for sure. If it shifts you will hear a loud hiss as the pressure equalizes. You could also try unplugging it from the circuit board. On some units it is energized in the cool mode and on others it is energized in the heat mode.

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I just purchased a honewell RTH 221 thermostat. I


Typically the four thermostat wires are:

R = power (or common)
G= FAN
W = Heat
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Assuming that you have a normal electric or gas furnace and air conditioning, if the heat really is coming on, then just switch the position of the the Yellow and White wires.

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It sounds like you have a unit called a heat pump. When a heat pump unit is in cooling mode the outside unit blows hot air and the inside unit blows cold air. If the outside unit is blowing cold then the indoor unit is most likely blowing room temperature or warm air. It sounds like the thermostat could be controlling incorrectly or you could have a failed reversing valve which is the device that switches the unit from heating to cooling mode.

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97 Ford Econoline air conditioning and vent settings blowing hot


I know from experience that if the coolant is to low ( not just the freon levels in the compresor but the antifreeze/coolant level as well) the AC system will not cool and will blow hot. Check the coolant Antifreeze and freon levels, even with the Coolant being a little low my 1998 Ford E150 Van will blow hot. After you have ruled out of these possibilities and the chance it is the thermostat most likely the problem is what Ford calls the "Flap" it controls the air flow through the vent system when you switch from Heat to AC. When the Flap is working it closes off one systems air flow so as to not interfere with the current climate selection.

Feb 21, 2009 | 1997 Ford Econoline

1 Answer

My heating system only blows out hot air through the vents.


I've seen this problem alot. Replace the switch panel for the heater. There's a chip on the backside that likes to go bad. The part is a dealer item.

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1 Answer

A/c and heater


Is it leaking antefreeze?
The thermostat might be gone or needs a bigger thermostat
It could be a vaccum leak for the drivers side blowing cool air and the passenger side blowing warm air
Does it have dual air control switches one for drivers side and one for passengers side?

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