Question about Whirlwind FH-778 Air Conditioner

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I have 2 seperate units in my house. The

I have 2 seperate units in my house. The downstairs unit is operating fine, the upstairs unit is just blowing hot air. THe units are airflowe and the fan is not moving on the unit outside.

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  • 340 Answers

Check breaker you may need service.

Posted on Jun 20, 2009

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Posted on Jan 02, 2017

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Can not get fan on to turn on. All else fine. heat only furnace. No air conditioning...only air circulation.I used to set it on "Cool" and "Fan On"and get air to circulate. Do I need new thermostat?


Since you have two thermostats that operate the heating unit and the fan, and the fact that neither will turn the blower on, I would suspect the furnace/ air handler. Turn the thermostat to heat and see if the heat and the fan comes on, if it does operate normally in heat, the fan relay or the high speed on the blower is most likely the culprit. (If the furnace is equipped with a circuit board, the fan relay is integral to the board, if it an older furnace it has a separate fan relay). If it does not operate normally in the heating mode, verify power to the furnace, see if the flame comes on, if it does: the fan motor, circuit board or the fan relay are most likely the cause. hope this helps!

Jul 20, 2015 | Heating & Cooling

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PS3 has lines and buzzing sound when played in an upstairs bedroom. When played in a lower room, it is fine.


this can be due to heating of the unit sir.

please try cooling the unit using external fans

Jul 01, 2008 | Video Game Consoles & Games

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Mr Slim Model PEH3VK no air in one zone.


The Zone controller needed replacing so I rang for a Serviceman

Jul 06, 2009 | Mitsubishi Heating & Cooling

1 Answer

AC unit seems to be working normally but not cooling house


If you are referring to the secondary pan there could be a problem with your drain line.i would find the drain at the exterior of your home and **** it out with a wet vac..most A.H.Us have float switches or moisture sensors.They will shut down the unit if the drain clogs.

Jun 21, 2009 | Weather King 10AJA3601AH Air Conditioner

1 Answer

Carrier thermostat reading stuck on 50 but doesn't work


If it is Carrier tstat. Some have resets other dont. Kill power to insid unit. WAit five minutes turn back on. If it has batteries take them out. But the storm may have damaged the tstat. I had a thunderstorm damage 11 tstats in one building. You can buy a tsta at Home depot that will work and they are easy to wire. Just make sure you get the coorect tstat. If the unit is straight cool electric thats the easy one. A heat pump you need a Tsta with two stage heat one stage cool. You can pick one up for about 25 to 30 dollars. Please call back for more help be glad to assist.Rusty

Jun 13, 2009 | Heating & Cooling

1 Answer

Heating blowing coo air downstairs and warm upstairs?


Some of this depends on where the air handler/furnace is located. Most often in two story houses, it's in the attic upstairs, or in a closet upstairs. A duct routes air from the furnace to the downstairs supply duct, so it is a distance from the air handler.
When the unit first initiates a heating cycle, that duct is going to be full of cool air, and the duct itself will be cool. So the furnace has to run long enough to push the cool air out, as well as warm the duct up, before your going to feel warm air at the registers downstairs.

Keep in mind, heat rises. And, your thermostat only monitors the immediate area where it's located. In your case, upstairs.
Two story houses are problematic because of this. And one way around it is to have a damper system installed that distributes the air upstairs or downstairs based on a thermostat located in those spaces. There would be 2 dampers, and 2 thermostats (one upstairs, one downstairs). Each stat would control a damper, and the call for heat or cooling.

Let me know if you would like to consider a system like this, and I can point you to components to use. I've put several system like this in.

Jan 26, 2009 | Kitchen Appliances - Others

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Not enough return air to heating unit


Right now you are at bare minimun for what your unit requires. If you are not having any problems with the unit or have not had any I would not worry about it. You need to check and make sure that your duct size on the unit is not smaller than 14" in diameter. If it is 14" or bigger you are fine.

Dec 03, 2008 | Goodman CLJ30AR32 Air Conditioner

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