Blower Motor Replacement Wiring

Missouri Bound

There isn't. That relay is just a switch. Power needs to be supplied to it.

__________________
Do you want it your way or the right way?
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

taram

Aren't those the black & white to the circuit breaker?

Missouri Bound

L1 and L2 supply power to the relay control board, that's all. Motor power must be derived from another source. The relay control JUST switches it. The black and red leads are that switch. That yellow taped wire is not used (careful, it is energized when power is applied to the red wire) Taram...are you over your head in this one?

__________________
Do you want it your way or the right way?
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

taram

OK... off to search the web for a motor schematic... but to be clear... the image I posted is off the back of the relay... so I'm not sure what you meant that it went to another motor... I feel super stupid...

Missouri Bound

Don't feel stupid. What I meant was that the schematic you show was for the motor originally supplied with tht unit....it has been changed and therefore the motor will have additional wires for the additional speeds available. Not to worry, the extra leads will not be used.

__________________
Do you want it your way or the right way?
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Missouri Bound

Part of the problem is that the wires which are currently supplying the blower need to be relocated. Can you take any pictures which show all the wiring? I see everything disconnected...where are the wires which come into the unit itself..can you show that?

__________________
Do you want it your way or the right way?
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

taram

OK... new pic attached...

I'm not sure I understand why the wires need to be relocated... This is exactly how it was before the motor was replaced... in terms of the wires... just not how they are connected... ugh The boyfriend didn't take a picture and then couldn't make it work except to connect the power for the motor (black) to the main power connections and now is travelling. So that's why I'm sure it's how it's wired and not the motor... it works great if I use the breaker to control the on/off.

I'd prefer not to have to manage the a/c this weekend with the breaker but I can. Temps are supposed to approach 100 (blech). So yes, I may be out of my depth... I can connect the wires... thought maybe it was a simple thing... if not, then I will have someone come out next week.

New pictures attached... I do appreciate the time....
Cheers
Tara

Attached Thumbnails

   

Attached Images

 

Missouri Bound

The main power to the blower should be switched by the relay. I can't be sure from the picture, but are there 3 wires under that wire nut? I'd bet that only one connection would need to be changed to make it work properly. But from the pictures I'ts hard for me to tell what goes where. The wire which now goes to the blower (not the white) needs to go to the red wire on the relay, and the black wire from the relay needs to go to the blower.

__________________
Do you want it your way or the right way?
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

taram

I'm not sure which wire nut you mean... There are three white wires in one nut... the blower white... the relay white... and the white to the circuit breaker...

The other wire to the blower... would be the group of three for speed... red/blue/black... that is currently connected to the relay with the red and black... so also 3 in one wire nut...

Is the main power the white or same one that determines speed?

I'm still looking for a motor diagram... but it seems simple... one from the speed group... the white... ground with the green and the capacitor...

and that works if I connect one from the speed group to the black from the breaker... but not when I connect it to either the red, black, or red & black together on the relay...

Is that useful?

taram

OK... here's the only thing that has come close... and it seems to be what we are saying.... CD#6 on page 1...

http://www.electricmotorwarehouse.co...AO_CONNECT.PDF

beenthere

The red of the relay connects to the black from the breaker. The black of the motor connects to the black from the relay that was not originally used.

Good chance the relay is not working, and that is why it was bypassed.

biggles

the only wire that is connected from the motor is that BLACK to the relays either wire.the YELLOW out of the relay is the other side of the N.O/N.C relay..your using N.O red/black...OK the 2 yellow out of the TR are the 24vs to the strip there....just because the relay clicks doesn't mean it is closing,wire the motor as told THRU the relay power in/motor out BLACK then jump C to G on that strip.the relay might click motor should take off....remembering the relay is rated for the motor amperage and contacts might be shot even though you have action....abandone relay in place add a general purpose...local GRAINGER http://www.bestbuyheatingandaircondi..._Code=REL90123

taram

Thank you so much!!! new relay ordered... nothing available local today... Have a great weekend! Stay cool....

Tara

Houston204

The new fan center from Grainger will probably use black for "C" and red "NO" will wire to the new motor black (or blue for medium speed , or red for low speed).

taram

Thank you everyone!!!! I am the proud new owner of a self installed ac fan control board... everything is working perfectly now!!

Have a wonderful week...
Tara