Question about Heating & Cooling

1 Answer

Outside fan runs all the time

Fan runs even when the unit is off. It still cools though.

Posted by on

  • Bill Long May 11, 2010

    Has the fan been replaced or unwired recently? If it has, it sounds like the wires are on the line side ( L1 and L2) of the contactor and they should be on the terminal or load side ( T1 and T2). They should be on the opposite side of the power wires on the contactor.

    If not is the compressor running also?

  • ROLYAHS69 May 11, 2010

    IF YOU CAN GET ME THE MODEL NUMBER AND SERIAL NUMBER OFF OF THE SIDE PANEL ON THE OUTSIDE CONDENSING UNIT I MAY BE ABLE TO HELP YOU. USED TO WORK FOR A/C CONTRACTOR. IF I DONT KNOW, I AM SURE HE PROBABLY WILL.

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 614 Answers

Fan wired wrong to contactor. defrost board bad if it is a heatpump. outside fan relay is on board. Rusty

Posted on Jun 04, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

2002 4 ton Bryant air conditioner shuts off, fan still runs but not cooling is problem in the controls in the attic or in the AC unit or both?


With a non heat pump it is a simple 24 volt AC control circuit. In the attic there is a relay that is actuated via the fan control wire directly from the thermostat. On the thermostat there is an auto/man switch that controls the fan. Manual the fan runs all the time. Auto fan turns on and off with the outside compressor.

If the system is not calling for cool and the fan continues to run the fan relay is sticking. common problem. Sometimes after running for several days the relay will stop sticking if not, replace relay.

If the system is calling for cool and the compressor stops I would still expect the fan to run until thermostat tells the A/C to off. Some compressor units include a safety switch or high-pressure cut-out switch A blocked internal valve bad control board or external fan in outside unit defective no air flow in outside unit.
High pressure cut out not good,

Suggest turning temp max cool and observe. If acceptable cool and the compressor runs without interruption all is good, except for the blower in the attic. Safely check relay in attic blower circuit.

Hope this helps.

thermostat-heat-cool-fan-on-czwsw2ci0layswcsyy3dj4dr-4-2.jpg

basic-thermostat-wiring-diagram-czwsw2ci0layswcsyy3dj4dr-4-5.jpg

Jun 28, 2017 | Bryant Heating & Cooling

1 Answer

Outside unit will only run for a short amount of time with A/C before the fan stops turning and starts humming, squealing/screeching and the top of the outside unit gets hot.


The bearings are bad in the motor and after the fan runs enough it eventually gets hot, making the bearing screech and the fan locks up. Need to replace motor again. See if it has a warranty. The reason it gets hot is because the fan is what removes the heat from the coil and if the fan isn't running there is nothing to cool it off so to speak.

Apr 19, 2016 | Heating & Cooling

1 Answer

Why is a fan in the engine compartment is turning on


this fans turns on in order to cool your radiator and cooling system, it will also come on when the air conditioning switch is turned on, if this is running all the time then you should have this checked out by a mechanic, if its coming on and off this is perfectly normal

Feb 03, 2014 | 2008 Hyundai Tucson

1 Answer

My American Standard Heritage 11 unit was not working properly when i came home from work and the temperture in the house according to the thermostat show the temperture in the house to be 85 degree&#


the dual run capacitor is bad located in main panel of unit size of small red bull can it will be swelled up on top indicating it bad get on at electric motor or electric supply house most ac stores wont sell it has a rating like 35/5 370

Aug 27, 2012 | Heating & Cooling

1 Answer

I installed an RTH2300 this winter to replace an old mercury thermostat. It worked fine for the heating season. I turned it to Cool for the first time today and my AC and furnace blower will not turn...


Maybe turn selector switch to off.see if every thing shuts off.if yes. turn FAN selector switch from (auto) to (on) mode.does the outside unit come on or does just the furnace blower only run ? the inside fan should be the ONLY thing on.if not, reverse the (G) & (Y) wires inside the new thermo.

Jun 07, 2011 | Heating & Cooling

1 Answer

I'm having trouble figuring out the programming on our thermostat; comfort-set 90 series premium; universal multi-stage heat pump digital 7-day progammable. The fan runs all the time even though it's set...


Low voltage wiring problem.check wiring diagram/converson chart carefully as the termnal letters vary by brand of unit.make sure color code is correct btween each appliance itself.good luck!

Mar 15, 2010 | Heating & Cooling

1 Answer

Rheem outside a/c fan won't turn off


I would probably start at the thermostat and see if 24 volts is continued to be applied to the yellow wire which calls for unit activity even though you have called this off. Shorting the cool (yellow) wire to the return (red) wire will cause the HVAC system to begin cooling and the fan will be turned on automatically.

Aug 23, 2009 | Ruud UAMB042 Air Conditioner

1 Answer

Fan does not run


You have a bad fan motor and it needs replacment(outdoor fan),sometimes though you can replace the capacitor(if it looks bloated or malformed).good luck--Nate

Jul 15, 2009 | Heating & Cooling

1 Answer

RobertShaw Thermostat 9600 problem


verify if you have separate units for each floor.

the ones working could be a complete separate unit from the one having problem.

look at the condensing units you got outside , how many are there?
if you have 3 units outside and you have 3 thermostats, then each thermostat is controlling individual split units.

we have to concentrate on the one that is not cooling. give me the details on what is going on with problematic one.

is the outside unit running?
is the outside fan running?
can you distinguished if the compressor is running the same time as the fan?

tnx 4 using fixya,

drcool

Sep 14, 2008 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

79 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2461 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...