Questions tagged [blower]

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1answer
46 views

How to ground a kitchen exhaust blower fan?

Recently our kitchen exhaust fan stopped working, only humming and not moving. In the kitchen there's a butterfly damper, the exhaust switch is on the vent hood, and the motor and exhaust fan are on ...
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1answer
41 views

How do you wire a current sensor to multiple fans?

I have two booster fans that I only want to run when the main HVAC blower fan is on. Each fan will have its own speed controller. How do I wire them both to the same current sensor switch? Should I ...
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3answers
88 views

How much PSI does an Electric Duster have?

I bought an electric duster for use in cleaning a PC, however I would like to know how much PSI do electric dusters generally exert. I can't convert cfm to psi, because the two units are incompatible -...
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1answer
65 views

High pitched whine from either the furnace blower fan or motor

There is a loud whine or scraping sound especially when the 11 year old Furnace Blower Motor/fan starts up. With power off, when I turn the blower motor fan blades by hand they make a scraping high ...
2
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1answer
50 views

Why is my blower motor drawing 12 amps on low speed - and can I do better?

I have an old lennox pulse furnace on the ground floor of a utility building, it is only used sporadically for air circulation not for heating. I replaced the blower motor about 4 years ago (original ...
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0answers
51 views

Blower turns on before furnace ignites

I have not relocated/changed the thermostat or had any work done on my furnace. The fans turn on well before the furnace starts giving off warm air, which blows a lot of cold air into my home. I have ...
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1answer
45 views

Should furnace blower run when the heat is off?

Our furnace blower is set to auto....it runs when the furnace is and is not calling for heat but the humidifier is on. This is a problem because the forced hot air system is blowing cold air which ...
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0answers
24 views

Why does my furnace blower work intermittently?

On my Goodman 3.5 ton AC/ furnace, the blower seems to only run when it wants. I changed the capacitor on the blower twice and the thermostat once- same. If it doesn't start, I turn it off for 5 ...
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1answer
45 views

Husqvarna 125b Leaf Blower not running correctly

It only has a few hours on it and may have been stored for an extended time with fuel mix in it. It starts quickly but when I give it full throttle it bogs down. If I pump the throttle lever it ...
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0answers
21 views

Blower problem on central unit

Just installed a new "smart" thermostat. The fan works on both the heating and cool setting when it is on auto. When I set it to the run position I get nothing. Is there a wiring issue?
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0answers
38 views

Furnace fan turns off when compressor turns on; unit freeze up

I have a goodman HVAC (model: GMS950904CXA). The unit froze up the other day. When I turn the thermostat to cool, the compressor turns on, the furnace blower fan turns on for a few seconds and then ...
2
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1answer
69 views

ECM Blower Motor Not Working at Night

So, I have had this problem going on for about a month and a half now with my A/C. Throughout the day, the A/C will work fine. However, there will come a time in the middle of the night when it ...
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1answer
17 views

Trane VX99 furnace fan to run

I would like to have the fan turn on and blow non-a/c. I only see 2 wires coming from the thermostat. In
2
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1answer
340 views

Changing blower motors with different wiring schemes

My blower motor crapped out and I got a basically new, used one for cheap but only realized after the fact that they were wired differently. Basically I'm attempting the opposite of this previous ...
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1answer
27 views

Aftermarket Variable/Multi Speed Blower Kits

I have a 3 year old Trane Furnace TUD1A040A9241AB with a 2 ton Cooling evaporator 4TXCA024BCHCBA. I believe it is a single speed blower or if not, I would like to figure out how to limit/eliminate ...
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0answers
35 views

Carrier furnace blower doesn't kick up to high

I have two Carrier furnaces in my home. One is 100btu the other is 80btu they use the same the mother board. I have an outdoor wood boiler that heats our house and the furnaces are only use for back ...
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2answers
1k views

ISSUE: Snowblower pushes snow (forward) rather than throwing snow out of the chute

I have an old Craftsman 3/21 snow-blower (Model: 536.884581). The snow-blower starts perfectly, motor runs perfectly and the auger spins when the drive is engaged. When I use it to blow snow, it “...
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2answers
1k views

Furnace Blower Motor fan hums but wont start

Furnace Blower Motor fan hums but wont start until I turn it by hand, then it runs fine. What should I check?
1
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1answer
66 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
57 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
45 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
234 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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0answers
34 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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0answers
32 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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1answer
994 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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0answers
7k 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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0answers
30 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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0answers
992 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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1answer
114 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
27 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
25 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
120 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 ...
1
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1answer
72 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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2answers
1k 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 ...
1
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0answers
397 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
1k 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
1k 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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4answers
2k 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
244 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
1k 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
2k 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
644 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
13k 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
621 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
5k 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
51 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
2k 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
2k 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 ...
2
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2answers
12k 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
17k 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 ...