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Questions tagged [blower]

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Furnace Blower Motor Wiring

I'm replacing a 1/3hp, 120v, 1075 rpm GE S336 S furnace blower motor with a Century model. Disregarding the capacitor and green ground wire, there is a discrepancy between the old and new. GE motor ...
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1answer
42 views

Why is my HI HEAT terminal causing blower to run non-stop?

I am trying to troubleshoot what is causing my blower to run non stop (the condenser (outside unit) comes on only when cool is required). There is no issue with cooling the house. I read through all ...
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1answer
27 views

AC Fan/blower not shutting

My AC unit is working just fine and shuts down at/below set temperature. However, the AC fan keeps running all the time even in auto mode. The only way I can shut down the AC fan is to power-down my ...
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1answer
29 views

Hvac problem blower motor

I have a 5 ton package unit at my home. The blower motor will not come on until a few minutes after startup. It is a heatpump.
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1answer
40 views

My blower fan won't turn on unless AC is running

So first of all, I've changed nothing: same thermostat and same everything. I typically run my blower fan 24/7, but a few days ago it stopped working unless the AC is on. Which tells me that the ...
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25 views

blower on Goodman Furnance/A/C is working but only slowly, barley pushes out heat or A/C

Furnace and A/C work, blower fan is spinning but there is no force coming out of the vents, almost a whisper if any
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31 views

Installed new blower with problems

Had a problem a few years ago with my blower motor. Tech who came to my home said he would save me money as it only needed to be oiled. Worked fine for 5 years after that. Recently I noticed that ...
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16 views

Ac unit blower cuts on off on off

My blower fan cut on off on off on off that fast then it stays on and runs fine. Only dose it at the beginning of the cycle
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1answer
212 views

Furnace blower motor starts but then starts clicking and eventually stops with a loud buzz

I have a Bryant furnace with a multi-speed blower. Yesterday I just replaced the capacitor and confirmed it is still working. The furnace turns on fine and the blower motor starts up when expected. ...
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565 views

Blower fan won’t come on in “auto” mode but will in “on”

I have a Honeywell model number NHGK076AF01 propane furnace. It is about 15 years old. The problem started when I noticed the breaker had tripped and I had no heat. After resetting breaker, I tried ...
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24 views

When heating, furnace blower turns on only in “ON” mode, not in “AUTO” mode

I have a York unit that is having problems with the furnace. The furnace turns on but the blower doesn't turn on when set to "AUTO" mode, only when in "ON" mode. "AUTO" works fine when cooling. Any ...
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249 views

How to stop the humming noise coming from my gas furnace when on Auto Heat?

My gas furnace makes a humming noise when on Auto Heat, like as if the blower motor or capacitor was bad. However, the blower turns on and sounds fine when thermostat is set to fan ON rather than ...
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144 views

Fan only mode not turning on blower - 2 wire blower

Our manufactured home has a colman furnace and for heating it works fine. I would like to use the fan only mode when we have the fire place going but it is not hooked up, and I just want to make sure ...
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1answer
46 views

Carrier Furnace 58STX110-14122 fan starts the first time, but fails to start at subsequent calls for heat

On a Carrier Furnace model #58STX110-14122, when the initial call for heat comes on, everything works just fine in the following order: Thermostat sends a call for heat Draft Inducer motor kicks on ...
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1answer
24 views

HVAC blower often (but not always) gets stuck ON.

I have a mid 1970’s G&S furnace. The blower often (but not always) gets stuck in the on mode even when heat isn’t being called for. The only way to stop it is to unplug the unit. Re-...
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1answer
24 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
59 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
49 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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1answer
286 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
242 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
497 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
761 views

The new GE blower motor is missing an orange wire, how to connect it properly?

My old GE blower motor had an orange wire. Unfortunately, the new replacement motor has no orange wire. The new motor will not start up with just the black, blue, yellow, red, and the 2 browns going ...
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3answers
832 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
148 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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800 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
1k 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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0answers
369 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
7k 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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492 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
3k 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
49 views

A/C blower stays on all the time but heat and cold work when thermostat sends signal; how to fix?

There are 2 hot lines (white wire that goes to heating contact & 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
759 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
937 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
5k 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
10k 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
621 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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3answers
10k 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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2answers
83 views

Why doesn't my air conditioner fan come on when the condenser starts?

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......
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1answer
10k 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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2answers
3k 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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2answers
3k 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
1k 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
3k views

How to eliminate vibration noise that started after replacing blower motor?

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
306 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
2k 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
225 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
123 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
328 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
2k 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
29k 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 ...