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Questions tagged [blower]

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0answers
30 views

Replacement furnace blower motor has extra wire, where does it go?

My furnace blower motor started to squeal pretty bad so I went picked up a replacement that the local HVAC warehouse looked up via the air handler's model number. The new motor that I picked up had an ...
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1answer
19 views

HVAC blower control in several rooms

At my church we have lots of HVAC systems. Some of the systems condition several rooms. As you know, you can't make everyone happy at one time. The thin older ladies in one room are freezing and the ...
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2answers
47 views

How can I extend the length of my furnace run time after burner shutdown?

My new furnace has a control board with preset blower run times after thermostat satisfies. Max setting is 180 seconds. This is not enough to purge the latent heat in the heat exchanger. I need ...
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1answer
35 views

Range Hood - external blower: Is the design different?

I'm looking into installing a range hood. I'd like to install the motor in the next room, right on/in the wall that has the exhaust port. There are many companies offering external motor/rotor ...
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0answers
23 views

Furnace blower not operating correctly after replacement.

My furnace, a Carrier furnace 58sta090-12114, stopped blowing air, no heat or a/c. It would blow for a few minutes and stop. The blower motor felt hot, so I kind of just figured it was overheating ...
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1answer
75 views

AC Blower Motor not working during night

The blower motor in the furnace stops working at night most of the time when the AC should be on. The blower motor (in the furnace) might run for one or two cycles at the beginning of the night but ...
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0answers
83 views

Trane xv90 blower won't come on regardless of what the thermostat is set at

I have a trane xv90 and the blower won't come on. I'm getting about 20 green flashing lights and then 1 red which kinda overlaps the 21st green. What does it mean? I had turned on my trane air ...
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1answer
146 views

Blower Motor Single “Stutter” when Condenser comes online

I recently moved into a new home. This home has two stories and each story has its own AC system. Both units were replaced about 2 years ago. Both units are 3 ton Carrier Units. Everything is ...
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1answer
363 views

Extra orange wire blower motor

My old ge blower motor had an orange wire the new replacement motor has no orange. The new motor will not start up with just the black, blue, yellow, red, and the 2 browns going to the capacitor. ...
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3answers
478 views

The blower on my HVAC runs sometimes when it should be off

The blower on my HVAC runs sometimes when it should be off. It does not run all of the time. The furnace is in the attic and the abnormal running seems to be related to the attic temperature. ...
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2answers
54 views

Issue with Blower Motor Not Spinning Up

I have a Dayton Blower motor. Model 3K617K. It has a clutch that is supposed to engage when it spins up. However mine never gets up to speed. It turns, but slowly and constantly makes the loud humming/...
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1answer
424 views

Fan or Blower for Air Hockey Table

I want to build an air hockey table - pretty much a box about 2m by 1m, with 1mm holes cut into the top surface. I read somewhere that slightly bigger tables use fans which can move 350-400CFM. I ...
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0answers
497 views

Low speed furnace fan blower motor will not shut off

I have a carrier furnace that has a low speed fan blower motor that will not shut off no matter how long I leave it running. I checked that removal of the G wire at the control board does not change ...
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1answer
501 views

Goodman furnace ignites but fan won't run

My Goodman furnace burners ignite fine but fan never starts. Have I got a bad fan motor? LED blinks 4 times for High Limit Switch. I've removed the switch and shaking it softly you can hear the ...
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1answer
28 views

Which Fan / Blower Type should I chose? [closed]

So I was hesitating if this is the right Stack Exchange site or the physics one so let me know if you feel the physics one is more appropriate. Goal I am creating a project where I will need to ...
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0answers
253 views

furnace blower motor turning on and off like clockwork when heating

I have an HVAC system (heat pump / compressor outside the house, air handler under the house). Recently something strange started happening. While system is in heating mode (my Nest thermostat says "...
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1answer
3k views

Wiring a Replacement HVAC Blower Motor for an American Standard Heat Pump Air Handler

I undertook what I thought would be a straight forward task.... Needless to say I have run into an issue that I need some help with. The replacement motor is a century 4ka35 motor with the ...
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0answers
579 views

HVAC Blower runs slow when it should be off

I have recently replaced the motor and blower cage in my air handler. The cage is now balanced and the motor seems to operate well. If the unit is on, in either A/C or Heat, there are no issues and ...
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0answers
355 views

2 Cycle Blower Primer Bulb Not Filling

I have the Ryobi BP42 back pack blower and when I press the primer bulb it does not fill up with the gas/oil mix. I have checked the air filter (and yes it does look dirty), ordered a new one and ...
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1answer
1k views

Blower fan works w/ a/c “auto”, not with heat “auto”

I know there are similar questions out there but are there any new ideas? When I turn on my heater, the gas fires up but the fan doesn't turn on. I know the fan is still working because it will turn ...
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1answer
26 views

A/C blower stays on all the time but heat and cold work when thermostat sends signal

There is 2 hot lines(white wire that goes to heating contactor & Blue wire that goes to furnace limit switch & both of those are hooked on same side as wire coming from main power wires) that ...
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1answer
443 views

Air handler turns on even when set temp is reached

My HVAC is a heat pump system, the air handler inside is a Goodman aspf183016ea. The whole system/house is about 3 years old, and is all electric. I recently moved into the home and noticed that the ...
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2answers
558 views

Furnace keeps cycling on and off until it's up to set Temp

I have a Philco 80,000 btu two stage with variable speed blower, high efficiency furnace with a two wire thermostat, on/off. The furnace 6.5 years old and when the thermostat calls for heat the ...
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2answers
2k views

Use external switch to control blower fan on furnace

We have a modern furnace with an old thermostat that controls heat and has a wire pair traveling to the furnace's control board. I'd like to wire up a local light switch by the furnace to manually ...
2
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1answer
4k views

HVAC blower comes on by itself. Even after thermostat has been disconnected from wall. EDIT- POSSIBLY FIXED

My TRANE XE 90 blower fan has a mind of its own. Even with the thermostat removed, it randomly turns on. It has gone a day without coming on (thermo off the wall the entire time) then just cycles ...
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1answer
471 views

How to set Nest Thermostat to control blower without heat

I have a Lennox G14Q3 propane furnace (forced air). I used the Nest/furnace setup last winter without any problems with just the W and R terminals. But, these summer days I would like to push air ...
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0answers
65 views

My blower motor kicks on and off roughly 30 second increments even when everything is turned off at the thermostat

I have a westinghouse P3RD-048K PACKAGED air conditioner(all in one outdoor). The ac still works fine but inbetween the ac on cycles the blower motor still kicks on and off in 30 second increments. I ...
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3answers
4k views

AC - frozen tubes, no air flowing when fan on and system off

Last night I realized my AC stopped working. I turned the thermostat to 74 degrees and by the time I woke up the house temperature was 80 degrees. My home has a single Carrier compressor (obviously ...
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1answer
34 views

I have a York heat pump…the condenser is coming on but the blower motor isn't. Model# F6FP030H06T3XH

My blower motor doesn't come on but the condenser does when cooling is called for. Relay is good...motor is good...transformer is good...I am getting 24v on G at control board...motor does nothing. ...
2
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1answer
6k views

Furnace blower motor runs briefly then turns off

I have an Amana AMH80804BN with a Nest thermostat (wires Y,C,Rh,W,G) and a 3 ton AC. I have been having issues with the AC portion the furnace (heat) seems to work fine. The AC will start out the day ...
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0answers
789 views

Central Air blower shuts off after a few minutes

Yesterday my AC stopped working. This morning when checking the thermostat I saw that I needed to replace the batteries, which I did. The AC came on immediately but the blower shut down after 5 ...
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0answers
44 views

My Coleman furnace blower won't turn off after 4 or 5 degree temp increase

It will turn off after a 1 degree increase or when maintaining a constant temp. I think it is the fan limit switch. The thermostat was replaced with no effect on the problem. I cant seem to locate the ...
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0answers
423 views

Furnace blower starts but stops

Lennox SL280UHV. Power to furnace is off. Thermostat cooling and heating in 'off' position. Fan in 'on' position. Power to furnace is switched to 'on' position. Blower starts but then immediately ...
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2answers
2k views

Goodman GMP 100-4 Red light blinks 4 times [closed]

As the heading says I bought a used Goodman GMP 100-4 and the red light on the board blinks 4 times. As soon as power is turned on tho the Furnace I hear a click and a few seconds later the blower ...
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1answer
2k views

Why is my indoor A/C Blower randomly turning on and off only with Nest?

I recently purchased a Nest Thermostat (3rd Generation). My old thermostat was working perfectly. I wired Nest the Same exact wiring as the old thermostat which is : Y1 W1 G RH RC. With Nest, the ...
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1answer
988 views

How much power/electricity should my central air's blower fan use?

Main Question I've already visited this similar, but different question and saw a commenter mention that about 500W seems appropriate for blower fan of an HVAC system. The past few months we've had ...
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2answers
2k views

Replaced blower motor, now have vibration noise

I have a trane xr80 furnace circa 2002. The blower motor died today. I purchased a new motor and replaced it. Started the A/C and it blows great but now on the first floor above the furnace I have ...
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1answer
207 views

Blower shut off but the AC unit ran for 20-30 minutes afterward

Last night I turned my AC down a couple degrees before going to bed. The AC was running at the time, so when I set the temp below the current temp, the blower turned off. After getting in bed, however,...
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0answers
1k views

Is it safe to use a blower to clean debris off a shingle roof?

I would like to routinely (once a month) clean the debris (leaves, sticks, pollen, etc.) that collects on my shingle roof because of the shallow pitch: Rather than use a soft broom to brush the ...
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1answer
159 views

How do I wire my old 3/4hp 115-120v 50-60Hz HVAC motor to make an exhaust fan?

My old HVAC blower motor has the following wires and I would like to know how to wire them to a typical 110v plug for use as a garage exhaust fan. yellow (N) black (L) yellow/green (ground) black (M1) ...
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2answers
113 views

Run HVAC fan throughout the day for comfort

At my old house, we replaced the HVAC with a high efficiency unit that came with a thermostat that would blow, say, 50% to 70% of the time for air movement to increase comfort level. I'm not sure but ...
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1answer
266 views

Replacement part for coal stove blower rheostat

I have an Alaskan coal stove and my blower rheostat broke this morning. I opened it up hoping to be able to fix the part instead of buying a whole new fan controller. Any motor controllers that I ...
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2answers
1k views

Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace?

My furnace blower is rather loud and runs at one speed. I wish to have the blower run at a slower speed to mix the air in the house when the heat is not called for. I see some furnaces have ...
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1answer
23k views

AC Blower running very slowly

I have a Ducane heat pump. When running in AC Mode, the outdoor fan and compressor kick off just fine. The blower fan seems to kick off as well, though it's not putting out very much air. I can ...
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1answer
208 views

Should there be a cap next to my furnace ac drain?

In the picture below, the left side has a good amount of airflow while the ac/blower is running. The tube on the right is the drain that the condensation flows out of to the floor. Should there be a ...
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2answers
35k views

Blower fan doesn't work in cool/auto or on modes

I've read the posts with the opposite issue, which have been helpful (you guys are amazing!) but still no solution. Problem is that the blower fan does not come on when system is on "Cool" and fan is ...
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6answers
20k views

Air Conditioner Can't Keep up

We just rented a condo and our A/C cannot keep up so it will run almost constantly. It can't even keep the temperature constant, it will creep up into the 80s even while running. I measured the ...
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1answer
10k views

Troubleshoot AC issue, no inside blower

I need help troubleshooting Rheem RAHE-036JAS, Armstrong G1N80AU125D20C-1, Honeywell ST9160B 1068 Board, Honeywell SV9520H 8034 Gas Valve. About a week ago, AC and Heat were working fine. After ...
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0answers
520 views

How do you remove the blower motor from a Lennox G40UH-48B-090-02?

I have a Lennox G40UH-48B-090-02 blower motor which sounds like it needs to replaced (Excessive noise and vibration). It is mounted horizontally so that when I remove the front panels, the inlet and ...
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1answer
4k views

How can I stop the humming produced by my water heater blower motor?

Plumber installed a new Bradford White 75 gallon gas water heater with power vent. The first blower motor started a high-pitched whine/squeal (bad bearing?) approx 6 months after install. Motor was ...