Questions tagged [blower]
The blower tag has no usage guidance.
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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
63 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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134 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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19 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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142 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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42 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
29 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
21 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
57 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
40 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
96 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
158 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
250 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
596 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
660 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
99 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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714 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
990 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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313 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
5k 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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426 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
2k 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
45 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
634 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
905 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
3k 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 ...
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1answer
7k 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
542 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
6k 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
68 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
8k 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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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
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
234 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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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
194 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
117 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
319 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
25k 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
233 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
38k 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
11k 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
550 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 ...
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3answers
1k views
Can a furnace with a variable speed blower be used in a multistory house?
I just had an HVAC guy out to give me an estimate on a new Carrier Infinity series furnace and he said the second floor rooms will always be colder because the thermostat is on the first floor and not ...
