Question about Ventamatic Direct Drive Whole House Fan With Univer

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We do not know how to turn the whole house fan on. Does it work through the thermostat on the walll for the air- heat switch?

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To turn on your whole house fan, got to you thermostat. Open the door and look for where it says fan, most will have a selector switch to select "auto" or "on". You want it "auto for it to work properly with your furnace and or central air. If you flip it to "on" it will run 24 hours a day none stop, warning this may shorten the life of your fan a little.

Posted on Jul 29, 2009

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Posted on Jan 02, 2017

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3 Answers

How do you turn on only the fan to cirrulate air through the house in the summer?


Hello Wendy,

You didn't say what kind of system you have, so we'll assume you have central heating and air conditioning.

There are a few things you can do to keep air moving in the house with your central system. Depending on the brand of system you have, you can turn the heat/cool switch on the thermostat to "off" and turn the fan auto/on switch to "on." This will disable cooling and heating but allow the fan to run continuously.

You can turn the thermostat up to a temperature far above what you would normally use in summer and turn the auto/off fan switch to on. This will force the fan to run continuously. The cooling will still work when the temperature in the building exceeds the higher set point.

These steps will work on most systems but if you have one of the new "NEST" or other internet-connected temperature control systems, you can refer to the operating instructions to see what your options might be.

Note that leaving the fan on all the time will result in higher electrical costs, more wear and tear and you may have to clean or change the furnace filter more often.

You might be better served by purchasing a free-standing floor type "tower" fan and placing it in the room you are in most frequently.

You could also use (or install) ceiling fans.

Jul 19, 2017 | Heating & Cooling

1 Answer

Bryant programmable thermostat doesnt keep the temp have to put it on fan instead of auto


My guess is that you have gas heat. If this is the case, sounds to me like your main control board or depending on age of furnace, fan controller is not working. With gas furnaces, it utilizes 2 fan speeds. High for cooling, & Low for heating. Your thermostat only controls the High speed - switches when you turn your fan on & when there is a call for cooling. The only other thing I can think of is it is possible that the Low speed windings on the blower motor are open causing it to not turn on. Most motors have 3 to 4 speeds & only 2 are used. Switch the heat motor wires in the furnace (on the control board) with one that is on a spare terminal.

Feb 21, 2013 | Bryant Cube Series 1 Stage Heat/ 1 Stage...

1 Answer

Just moved in to new house with central air. Despite turning all 3 zone thermostats to off (ie no cool, no heat), there is still air being blown through vents throughout the house. (fan switches are also...


You should not have the blower fan running if all thermostats are set as you say. You either have a relay problem in the air handler or the zone system wiring or controller is defective.

Sep 01, 2011 | Honeywell Heating & Cooling

1 Answer

Our Furnace doesnt seem to be working correct. We an: Air Pro BGM075128 and is Natural Gas. It will turn on when we turn up the thermostat.. but we never get any heat through the vents. There is a...


sounds like the blower motor is not working, if the furnace is actually lighting up and the burns are ignited. You should set your thermostat to auto, as if it is on fan then the fan runs all the time until you take it off of fan. I am a little confused and since I am not there I will give you a website that will walk you through the ignition process, this way we can eliminate flame sensor,ignitor, pressure switch,roll out switch, board,etc. I really hope this helps as I know what it is like to be in a cold house. Good Luck Tim

Nov 20, 2010 | Heating & Cooling

1 Answer

I have a vulcan compact 60 sn# 1744 cat# 38-05 aw 166 the problem is the gas burner shuts down periodically about every 4-5 min, leaving the fan still running for a further 3-4 min, blowing out...


Hi Dave, my neighbour has a Vulcan Compact 60 that is doing the same as yours, except the cycle time is even shorter, only four minutes total. The temperature in the house barely rises and never reaches the thermostat setting. Altering the thermostat anticipator does not alter the cycle time. Therefore, as you have found, the fault is not related to the thermostat. The gas technician who inspected the heater said he could see the unit was faulting, but didn't think he could fix it. WTH? To help my friendly neighbour, I have asked numerous experienced techs since and those few who actually seem to know anything have helped me piece together what is probably (I emphasise probably) happening. Current thinking is that the fan is not blowing enough air and the heat exchanger is overheating, which trips the over temp switch (limiter), cutting off the burner. Eventually the fan cools the unit down enough to switch itself off and reset the limiter, then the cycle repeats.
The remedy is to replace the fan or replace the fan bearings, if they have become tight, as is likely the case. It might also be necessary to replace the combination fan/limiter switch, because the contacts are probably arcing due to the extra current drain of the fan with tight bearings (I know this because the arcing causes TV and radio interference to myself and others in the vicinity, which interference ceases when the heater is turned off and resumes when the heater is turned on and had about 20 minutes to heat up). Important: If no action is taken, the heat exchanger can be damaged and/or cracked, especially if the limiter contacts weld closed, which will allow the heater to exceed the limit temperature and probably crack the heat exchanger. This in turn will allow carbon monoxide fumes to enter the house via the ducts. Therefore the problem should be fixed ASAP.
I am currently trying to find someone who understands this heater to the extent described above and therefore has some chance of repairing it correctly. No success as yet, similar to your own experience.
Dave, if you discover anything at all about this fault, please let me know, as I am not going to waste my money on gas techs who are unable to fix the problem because they don't understand the system to the required degree.
Parts can be obtained from many gas supply houses. The one I normally use quoted about $300 for a fan and $150 for a fan/limit switch. This seems too expensive to me. I could get a whole second-hand unit for about $300. Will try to let you know if I make any further discoveries. Anyway, best of luck. Regards, VC60.

Aug 17, 2010 | Vulcan Heating & Cooling

2 Answers

My air handler fan will not come on during heating but will operate during cooling - Anerican Standard unit TWEO65E13FBO


Hi,
Please check the thermostta first. Take the thermostat to the air handler and hook up on a short thermostat leash. The unit should work properly, then its for sure that the problem is going to be in your thermostat wiring. If problem persists then we are troubleshooting a thermostat.

Let us know if you need further assistance.
Thanks for contacting Fixya.com

Jan 12, 2010 | Heating & Cooling

2 Answers

Evcon Model EB15B Elements glow red for 3 minutes then cycles off. Fan stays off during the cycles. Manual fan switch will turn on the fan. Assistance requested, cls


the fan has to be on while the strips are on. knowing that the fan comes on when you switch it to on at the thermostat but not when your just calling for heat indicates that you have somting wrong with the heating relay or the fan isnt wired properly to the heating relay (posssibly a new motor during the summer) or just a bad relay. when the first stage heat comes on it should also energize the motor the first to come on is also the last to shut off which will make sure the fan runs during the whole heating cycle. until you remedy this you can run the heat just keep the fan switch set to on so its running, this will not hurt anything

Nov 24, 2009 | Air Purifiers

1 Answer

I changed the filter on my ruud 1x2000 the other day did not try to turn on until yesterday.tried ac nothing then tried heat nothing. changed termastat still nothing.


is this a whole house air conditioner ,
if so check the fuse panel,
check to see if the outside unit runs at all , compressor or fan.
check the ac transformer power to the thermostat
check the switch in the ac closet
doe the internal fan run if you switch to fan only.

Apr 13, 2008 | Heating & Cooling

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