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Why does my fan only cut on when I turn on my A/C or heat in my single wide trailer.

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  • Stacy Cherry Nov 10, 2010

    I am sorry maybe i wasn't clear with my statement. Even though my fan cuts on my heat or A/C does not. It just recirculates the air in my house.

  • Stacy Cherry Nov 11, 2010

    In the summer the A/C would not cut on and now that it is getting cooler the heat will not cut on. Just the fan cuts on. I have to turn the thermostat off and on several times before the heat or A/C will come on with the fan.

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The only reason i can think of are,
It is only powered up when that particular circuit is used/energised?
There is a Thermostat and thermistor controlling the Fan, and that's gone faulty, and needs replacement ?
You need to trace out the circuit and see what circuit it is on, and if it is controlled by anything.

Posted on Nov 11, 2010

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If you are just using the thermostat then be sure you have the switch at the bottom of your thermostat set on the function you want.....one will be "cool"......the other will be "heat" .....the other will be "fan" ........choose the one you want and then move the thermostat to the temperature you want.....Hope this works for you....

Posted on Nov 11, 2010

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It only turns on because its linked to your heating system, you need to get a separate fan like a box fan.

Posted on Nov 10, 2010

  • Tre Elkins Nov 11, 2010

    aah that's clearer... give me a sec i just got home from work.

  • Tre Elkins Nov 11, 2010

    If you have a combined central AC and forced air furnace system, the circuit that feeds your furnace should also be on, as the furnace fan needs to run to circulate the cooled air. Check this circuit as well, using the same process of turning the breaker off and back on. The furnace circuit could be controlled both by a circuit breaker on your breaker panel, and possibly by a wall switch in the furnace room. Check both. I have such a wall switch and use tape to keep it in the correct position (on during heating/cooling season, off in spring and fall), to prevent someone from mistaking it for a light switch and accidentally turning it off during the heating/cooling season.

    Another thing to check is that the fan is running. If you set the fan setting on your thermostat to "on" instead of "auto", you should hear the furnace fan start to run even if the air conditioner doesn't turn on. If the fan doesn't turn on, this is an indication no current is getting to your furnace.
    Lux Programmable Thermostat

    Then check this...
    Lux Programmable Thermostat
    About $40 at Amazon.com

    Try setting the thermostat as low as it can go (remember to turn it back afterwards!). It's possible that the thermostat controls are not working properly. One of the home air conditioning problems I had to deal with was where the only way to get the AC on was to turn the thermostat down to 49F (9C)!

    If your thermostat is a programmable thermostat such as the one pictured at right, check that it shows some indication of being on! If you can't see anything on the LCD display, there may not be any power getting to the thermostat. This could be because the DC line powering the thermostat is off, or because the furnace is switched off.

    Remember that when you are running the AC your windows and doors tend to be (and should be!) closed. Make sure your home air conditioning problems aren't just caused by closed doors or windows stopping you from hearing the noise of the compressor running.

    In some central air units, the compressor (outdoor) unit has a high pressure cut out, which stops the unit if the coolant pressure gets too high. This is a button that sticks out of the cabinet, near the coolant lines. Press this button in to reset it. If the button pops back out soon after the unit starts up, call a technician to have the refrigerant level checked - for home air conditioning problems like this, you should try to solve the problem yourself.
    Checking the outdoor unit

    Then get out the gloves...
    Photo by prettywar-stl via FLICKR

    The evaporator unit in a central air conditioning system needs to drain condensed water that collects on the coils. Two common home air conditioning problems here are that the condensate drain may be blocked, or, if the system uses a condensate pump, the pump is not working. If condensate is not properly draining, check that the condensate drain is clear and that water can flow freely down it, and if the system has a condensate pump check that it is plugged in and working. The unit will not run until this home air conditioning problem with condensate draining is fixed.

    PeakSaver: In some areas (such as my home town of Toronto) you can get a modest rebate from your utility if you allow them to install a device called a PeakSaver on your air conditioner. This may be the cause of an air conditioner not turning on. Imagine what happens during a heat wave, when everyone's AC unit is churning away at full blast - this causes huge spikes in demand which can sometimes stretch the electrical grid to the limit. (It can also mean more of the electricity gets generated from dirty sources like coal, instead of clean sources like hydroelectric or wind.) Utilities have started offering these free (or incentivized) devices to homeowners to reduce this stress on the grid. Essentially, a PeakSaver or similar energy saving device will periodically shut off your compressor during peak demand periods, so that everyone's air conditioner is not running at the same time. In most cases this won't affect your indoor comfort level over the space of a day, but it can be disconcerting when you turn on your AC upon getting home, and it doesn't kick in for a while. (Typically a PeakSaver will not cycle your air conditioner off for more than 15 minutes.)

    Finally, be patient. Sometimes it can take a minute or two for the compressor to start up. If the system routinely takes a long time to start up, have your unit serviced.

    If none of these tips solve your home air conditioning problems, call a technician, Don't try to solve a home air conditioning problem yourself if the cause is not obvious. You could cause a lot of damage to your AC system, or risk electrocuting or otherwise injuring yourself, by tinkering further than what's suggested above.

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Hello Scherry. Your fan is wired to turn on when you turn on either the A/C or the heat. This is how the cold, or hot air gets circulated around the singlewide trailer. Joe

Posted on Nov 10, 2010

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