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Why does the top aircon work and not the bottom?

The home I live in has 2 aircons, 1 up stairs in the main bedroom and downstairs. The one upstairs blows cold but the one downstair doesnt, they both run on the same engine. When I turned the d/s aircon on it gave a popping noise and shut off all the electricity in the house... do you have any idea what could be the problem

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You have a short in the system,you will need to have someone that can trace the wiring,come take a look.Most AC techs can do this,but you may need an electrician.



Please rate this a fixya

Posted on Feb 01, 2009

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Posted on Jan 02, 2017

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My upstairs temperature is 80 degrees and the downstairs is 69 Honeywell focus pro th6000 is set at 69. Why is the upstairs so drastically hot?unit is located upstairs& thermostat is downstairs


if there is no control of air movement between floors and you have it on cooling then any cold air will go down to the lower floor
or alternately if you have it set on heating all the hot air will rise to the upper floor
where is the system located (upstairs or down stairs ) and where is the thermostat located
to get control close any upstairs to down stairs doors or erect a heavy curtain across the stair well

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How do I fix two three way switches where only one of them controls the light?


--------------- wire #1 ---------------------
power in --- -----power out to
--------------- wire #2 --------------------- light

the upstairs switch is improperly wired. With the breaker off, un wire the upstairs switch. Using an inductive tester with the breaker back on (use caution not to get shocked, determine which wires get power from the downstairs switch in EACH position (there is no 'off' in a three way). when you determine which two wires bring power to the upstairs switch, the remaining wire is the light.

Nov 29, 2014 | Electrical Supplies

1 Answer

Why can't I lower my honeywell 8500 below 67 on cool?


With a two story house you have to be aware that cold air flows downwards so any cold air coming from an ac unit will flow downstairs( normally down the stairway) so unless you can close off the down stairs then the up stairs unit will be cooling downstairs as well. Ac units have a thermostat located in the air intake and it cools until the cold air has risen to that point. In effect the space above the ac unit will be hotter than the floor. Knowing how they work ,you can see that the upstairs unit will never reach the set temperature because the cold air is continually heating from the house and will never get to the top thermostat.
So your solutions are
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2--don't run the upper ac unit unless you are living up there (waste of money
)3 place an ac in each upper room and keep the room door closed

Aug 12, 2014 | Heating & Cooling

1 Answer

I moved into a place that has a MasterCool Evaporative Cooler on the roof. The ownstairs is quite comfortable so I really only need to cool the 2nd story.... it seems as if all the cold air settles...


jbrown - Hot air rises, Cold air falls. If you have ceiling fans upstairs, turn them on to run counterclockwise at highest speed you can stand. Make sure all the windows are closed upstairs. The ceiling fans will help to keep the cool air upstairs and pull some from downstairs.

If you don't have ceiling fans, invest in a box type fan that you can place at the head of the stairs (that's the top of the stairs) run it on HIGH and it will act like an exhaust fan, by pulling cool air upstairs. It may take a while, but it will help cool the upstairs to some degree.

Hope this helped you. Please let me know. Thanks.

Jun 24, 2011 | Mastercool 67471 Evaporative Cooler Air...

1 Answer

The xbox 360 is plugged into the wireless router down stairs, how will the xbox work upstairs in the bedroom not plugged into the router.


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Mar 07, 2011 | Microsoft Xbox 360 Console

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I'm looking to purchase a Rudd 2 stage model, 16 SEER, 5 ton along with a 100000 BTU 95% furnace. I have a two story home and will only be using the 1 AC. Will the Rudd cool both floors?


Assuming that there are ducts ran upstairs and downstairs, it all depends on the square footage of the living spaces, i.e. bedrooms, living room, dining room, etc. You need an average of 1 cfm per sq ft. For every 1 ton of air, you have an average of 400cfms. So your 5 ton unit will cool/heat 2000 sq ft. A 16 seer unit with a 95% furnace is a nice buy and you will notice the difference for sure. Hope this helps!

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1 Answer

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Hi, I have a digital tv plugged into an extension cable in an upstairs (Toshiba) bedroom; it works perfectly - receiving all channels. I have a digital tv downstairs (Samsung) where it seems the wall...


Hi Fiona
Somewhere along the line from the aerial there must be a signal splitter that feeds the upstair and downstair terminals.
Try to find that splitter and switch the output to see if the problem goes from up to downstair.
If it does switch then you know the problem is with the splitter block, and if it stays the same then the problem is with the cable and/or the connectors that run downstairs.
Also the reason you get a pixellated(snowy) picture is because of signal loss during the length of the cable you ran downstair.
If running a cable downstair becomes the best option to fix your problem , then you could buy a cheap 10db signal booster/r.f amplifier to correct the signal loss and a cable splitter to feed both tv`s
That booster would be installed upstair in your case(near the source of the signal to be amplified).
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Dec 14, 2009 | Televison & Video

1 Answer

2 zone sytem main floor cooler than what i set it to


Warm air rises and if the upstairs thermostat is on it will onerride to lower the temp upstairs. To have the dowstairs thermostat govern, the up stairs must be off . The whole house will balance to the controlling thermostat.

Jun 02, 2009 | Honeywell Programmable Thermostat Heater

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Belkin G+ mimo adapter (a timely problem)


that does seem a long time to connect... is it the wireless connection or getting an IP that is the delay... if it's IP then the network icon in the taskbar will have a moving part to the icon rather than being static... kinda yello ball running along a wire (if ya know what I mean)

try THIS util to see what your signal strength is and if there any other services sharing the same channel. Maybe you need to change the channel of the router?

Jul 16, 2008 | Belkin (F5D7050) 802.11a/g/b Wireless...

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