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Air conditioner does not start when switched on fan works.

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Could be electrical or mechanical.check breakers and fuses first.then wiring.capacitor is pretty common too.

Posted on Sep 09, 2008

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Haier HWR06XC9 fan stopped working


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Bought 4 small Gold Star units in 2009. One quit cooling altogether, one blows slightly cool while the longer another stays on the less it cools. One did not cool well when it was new. All filters are in...


http://www.appliancepartspros.com/partsearch/frame_diagram.aspx?diagram_id=28700000&pkw_=basket&model_id=5520000&NewWindow=1

Download this illustration and then using a good multimeter start basic troubleshooting.


All residential window air conditioners have a cooling system made up of four primary components, a compressor, an evaporator fan, a control or switch, capacitor.When the thermostat is calling for a colder room temperature the compressor is energized. It is normally very quiet. The evaporator is always located on the front of the air conditioner. It also has silver fins. Be sure it is clean. Use a foaming type cleaner and rinse with plain water. Because the evaporator is absorbing heat, it is very cold to the touch. The temperature drop causes any humidity in the air to collect on the evaporator - sometimes called sweat. There is a fan inside the air conditioner that circulates the air for the evaporator and condenser coils. The circulating fan and compressor are running simultaneously. The fan motor has two fan blades attached to it on either end. The fan blade on the inside part of the unit continually draws room air over the evaporator coils, which are cold. The fan blade on the outside part of the unit continually draws fresh outside air over the condenser coils, which are warm. Because the evaporator coils are cold, they cause moisture in the room to collect on them, much like a cup of ice water on a warm, humid day. When the amount of moisture increases, it begins to drip down off of the coils into the bottom pan of the air conditioner.
If the compressor fails to start or the fan you may need to replace the capacitor.
You may need a hard start kit.
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Thermostat control The thermostat on a window air conditioner works by sensing the air temperature entering the air conditioner. As the air entering the unit reaches the set temperature it will cause the compressor to turn off. The blower may continue to run depending on the selection chosen on the control panel. Digital thermostats work on a similar principle but display a more precise temperature.
Test for continuity with the multimeter between the two terminals . Warm you should read continuity (contacts closed). If not change it.
Selector switches The air conditioner selector switches allow the user to choose the fan speed. The compressor always runs at the same speed regardless of the settings. If low cool is chosen, for example, the fan runs at a slower speed but the compressor still offers the same cooling capacity. There are other switches to control louver operation and other features on some units.

Jul 23, 2011 | LG Goldstar GWHD5000 wall/window Air...

1 Answer

If fan is manually started, a/c works ok. Will not start on own


it looks like getting power. if starts up manually then it could be Capacitor which get the fan going or the fan motor it self. i can tell you the Capacitor is much cheaper! i would start with that first

Jul 06, 2009 | Coleman Mach III Air Conditioner

1 Answer

Coleman AC compreser work but fan dont


If the selector switch is broken, you need to replace that first. This will cause the fan not to come on if there is an open in it. After replacing the switch, if you still have to fan operation, it is possible that you have a bad fan capacitor, part# 1499-5461, or a bad fan motor, part# 14683099. Replace the capacitor first before spending the money on a motor. An easy way to check is to see if you can start the fan motor by hand while turning it on a the selector switch. If the motor starts this way, replace the capacitor.

Hope this helps,

Jeff

Jul 05, 2009 | Dometic 57915531 Air Conditioner

2 Answers

Air condition problem


What type of thermostat do you have? If the fan is not coming on and neither is the compressor, then is more than likely a problem with the thermostat of control units of the Air Conditioners. The fan will come whether the compressor does or not if the thermostat and control unit are working correctly. Check for twelve volt at the control unit of the air conditioner ceiling unit. (Red Wire, should be labeled)

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1 Answer

Rewire air conditioner controls


Assuming "Window Unit" with rotary switch.
L1 (smooth part of line cord) to thermostat 1, thermostat 2 to overload (black disk) from overload to Common( C) terminal on compressor.
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1 Answer

Manual / auto fan control


Sounds like the problem is fan switch related. That is if the speed of the fan is controlled through the switch.

Jul 22, 2008 | Dometic Rooftop RV Air Conditioner

1 Answer

Fan speed trouble on cool setting


1.check selector switch of airconditioner.
2.capacitor of blower fan motor.
3 wiring of airconditioner.
4.replace selector switch.

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1 Answer

LG LWHD 1200 HR Air/Heater fan will not start.


may be a bad fan motor or loose wire, however some units have dip switch settings on the circuit board preventing the fan from coming on.

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