Wow this was a huge help! I replaced my blower motor a year ago and of course installed it backwards. Thank you for this!
@cliffmeima20153 жыл бұрын
I seem to run into this a lot on 3 phase fans. Good video.
@heatncool3 жыл бұрын
Yep. Its because of the wiring. Its different then 1 phase and techs don't know
@podocrypto6072 Жыл бұрын
So how do you fix it and cause it to go the right way? I have a air handler that I've maintained over the years, periodically go into it, clean things up, spray coil cleaner on it to clean the coils, made minor repairs, etc. Of course I always turn the breaker off to the unit before opening it. Anyway. this time I did the same thing and the fan went backwards on startup. Is it that capacitor? I never removed any wires, it just ran backwards for some reason after I cleaned the coils. Maybe I got some cleaner on something?
@henryalcocer51273 жыл бұрын
So weird, I’ve got a call tomorrow about a motor that seems to randomly run backwards, they can feel air coming out from the return when this happens, but they say it’s random. Doesn’t always happen… I’m thinking the motor probably needs to be replaced, it’s original to a 15 year old system. Any ideas what else I should be looking at before condemning the motor?
@paulmorris51833 жыл бұрын
Maybe the capacitor not getting it going the correct rotation? Just a guess, good luck.
@Ucannod Жыл бұрын
Question on alignment. I see the fan runs parallel to the housing. What if there is deviation that indicates the fan is not aligned perfectly? Would there be vibration at high speed? That is the main system I have. Does this happens if a mount is out of alignment or if the fan is warped?
@grayfurnaceman Жыл бұрын
The blower wheels often "wobble". If it does not vibrate, it's ok. Mount alignment problems will not generally vibrate unless it is very far out. GFM
@jasonfacio19793 жыл бұрын
Quick question, my furnace gets all the way through ignition and the burners stay lit for a few seconds and then go out. It continues this cycle until it locks out with a 6 flash code. I tried changing the flame sensor and that didn’t fix the problem. I’m assuming it’s the gas valve or the main board. Any ideas?
@grayfurnaceman3 жыл бұрын
If the burners drop out at between 4 and 7 seconds after igniting, you are not sensing flame. Assuming the flame is covering the flame rod, check continuity of the wiring. If all is ok, you have a control board problem. GFM
@allenzackery1639 Жыл бұрын
How did you make the fan go the right direction ? I have the same problem !
@grayfurnaceman Жыл бұрын
The motor is reversible. Most original equipment motors are not reversible. GFM
@paulmorris51833 жыл бұрын
My fan has been working good for several years . Today my son yells out at me when I just finished spit shining my chopper “hey dad the ac not working right.” So I’m ready to ride, I go in and after 3 4 hours of work I find the rotation is backwards. So I turn the switch off, turn the switch on and it moves a bit, so I stick my finger in there and turn it the correct rotation and guess what? It starts blowing cold air like crazy. I’m thinking it’s the capacitor not giving the fan a big enough push. Plus the capacitor was doing some pretty loud humming. Do you think I’m right!.
@grayfurnaceman3 жыл бұрын
The only way to find out is to replace the cap. It could also be a winding short. GFM
@hg2.3 жыл бұрын
Yes - that looks like an easy, scary mistake to make. Thanks.
@grayfurnaceman3 жыл бұрын
Welcome GFM
@watermanone75673 жыл бұрын
Good video, Many thanks.
@grayfurnaceman3 жыл бұрын
Welcome GFM
@jamesrogers46743 жыл бұрын
Do you have a video on prepping a system for replacement of a burned up compressor? I've heard there's some type of cleaner that needs to be used but never saw it or how to use it. Are they talking about filter dryer's that are designed to remove the contaminants? Found a burned compressor in my rental while ago and I'm planning on either switching the heat pump to an old one I've got or robbing the compressor from it.
@jamesrogers46743 жыл бұрын
The refrigerant didn't have an unusual smell, I've heard it stinks and you'll know it's burned when you smell it. It threw the breaker so I knew the compressor was probably toast. Knocked the compressor around and got it to run for a minute, but my dad said it sounded bad for a second when it first started. Was running fine when I went out back but I saw it arc off the body of the machine so we shut it down and found it was shorting through the body of the compressor.
@grayfurnaceman3 жыл бұрын
@@jamesrogers4674 I don't have a compressor change video. How the job is done depends on condition of the system. Your system seems to be shorted but not burned. The smell of a burned winding is unmistakable. An oversized liquid line drier will probably do it. GFM
@paulward4625 Жыл бұрын
So how did you reverse the direction of a blower motor
@grayfurnaceman Жыл бұрын
If the motor is reversible there will be a diagram on the motor indicating what must be done. No diagram, not reversible. GFM
@Coachham Жыл бұрын
I have a wood stove in basement. How can i use on the fan to suck up air
@grayfurnaceman Жыл бұрын
I am assuming you have a furnace. If the furnace is in the basement, you can remove the fan door and run the fan with the fan switch on the thermostat. You will need to install a filter over the fan door hole. GFM
@Coachham Жыл бұрын
Do i turn the fuel line off since im useing wood
@grayfurnaceman Жыл бұрын
@@Coachham No, the fan switch only turns on the fan. The heat is controlled by the thermostat heat setting. GFM
@Coachham Жыл бұрын
@@grayfurnaceman i have nofan switch. Older air furnace. Ill check into installing a switch. !
@Coachham Жыл бұрын
@@grayfurnaceman come to Alaska
@dominictest Жыл бұрын
What if the blower wheel was installed upside down
@curiosity23143 жыл бұрын
Good tip.
@mannyforeal2 жыл бұрын
what if the fan motor has been running right the whole time and now it's starting to run backwards? could it be the cap or time to replace the fan motor?
@grayfurnaceman2 жыл бұрын
Its possible the cap has failed and would be worth a try to replace it. More likely, the motor has failed. GFM
@mannyforeal2 жыл бұрын
@@grayfurnaceman I replaced the cap and it was still going backwards. Looks like I'll be replacing the fan motor tomorrow. Thank you
@I88-4-88I3 жыл бұрын
This reminds me of a problem i ran into years ago. A friend replaced a contactor and switched the black and white wires around by mistake i guess. It caused the compressor to run backwards. The unit worked for about 30 minutes or so then it would not come on. It just made a funny noise.😢
@lewistodd44583 жыл бұрын
How do you change the rotation on a 110 volt moter
@grayfurnaceman3 жыл бұрын
The only way to change it is to use a motor that is reversible. They usually have 4 wires with connectors that can have the terminals reversed. GFM
@lewistodd44583 жыл бұрын
Thanks that’s what I thought
@daveliedholm22963 жыл бұрын
Isn’t direction based on polarity to the field winding?
@grayfurnaceman3 жыл бұрын
@@daveliedholm2296 No. Polarity, as you are perceiving it does not exist in AC. GFM
@philiprizek63843 жыл бұрын
Well might as well share a mistake that I made I was out on a service call yours back and the blower motor was making a horrendous noise and it was hot and I thought for sure this thing was bad I went to go I took it out took it back to the shop for the new motor in it brought it back to the customers furnace without even testing it on the bench made the same horrendous noise all that work and switched it back could have fixed it within 5 minutes by changing the run capacitor
@grayfurnaceman3 жыл бұрын
They will give you fits. GFM
@jhayrado64943 жыл бұрын
Tagalog version please
@jolyonwelsh98343 жыл бұрын
It sounds as if the start winding needs to be reversed relative to the run winding. There should be a diagram on the motor housing.
@grayfurnaceman3 жыл бұрын
The point of this video is to determine if the motor is running backwards. It could be an install of a reversible motor that was installed incorrectly. It could also be a motor winding failure causing incorrect rotation. GFM