View Full Version : Blower motor wiring
thumper262
May 9, 2009, 05:39 PM
A/c has heat strips. Old motor black wire went blower relay, red to L2. I did as you said, BLACK TO L1, PURPLE TO L2, BROWN to CAPS. (WHAT about blower relay?)
Could I have a bad blower relay , possible running on 120 volt when compressor comes on?
wmproop
May 9, 2009, 08:01 PM
Thumper,, you need to stay in one spot ,and not start a new thread, not knowing,, knowone will be able to help you,, not knowing the first question,,
thumper262
May 10, 2009, 08:32 AM
thumper,,,you need to stay in one spot ,and not start a new thread,,not knowing ,,,,knowone will be able to help you,,,,not knowing the first question,,,,,
SORRY, knew to this site I guess I got message from KC13, how do contact KC13,tread him?
Joshdta
May 10, 2009, 08:40 AM
What is your exact problem?
thumper262
May 10, 2009, 09:12 AM
What is you exact problem?
Replaced blower motor on single package a/c, old blower three wire(red blue black).
New motor,5 wire-2 brown, one red, one black, one purple. A?c has heat strips, wiring -black to blower relayred to cap, blue to contactor. With out compressor 1100 rpm , compressor ON barley moves half speed. HOW do I wire it?
Joshdta
May 10, 2009, 11:07 AM
Black to black, relay
Blue to purple, contactor.
2 browns to the new capasitor.
Red not used. It is probably used for low speed, is this a 2 speed motor?
thumper262
May 10, 2009, 05:46 PM
black to black, relay
blue to purple, contactor.
2 browns to the new capasitor.
red not used. it is probally used for low speed,, is this a 2 speed motor?
Yes, +I tried already motor still slow when compressor comes on.
Joshdta
May 10, 2009, 05:48 PM
How old is this unit? Maybe the compressor is going bad and over amping. Do you have a amp meter? Do you have a full 240 volts to the unit?
T-Top
May 10, 2009, 07:45 PM
Did you get a new capacitor with the motor and will the blower run normal if you turn the fan switch on at the thermostat and the cooling off?
thumper262
May 11, 2009, 03:18 PM
how old is this unit? maybe the compressor is going bad and over amping. do you have a amp meter? do you have a full 240 volts to the unit?
1997, yes I, have one, yes, I am reading 8.5 amps, but I'm reading 120 at L1-120, L-2, 120 T1-120 ,T-2-120 at contactor, with out compressor , contactor open :eek:, compressor working fine. I hooked up 115 vlt blower , direct keeping cool OK, but won't shut off. 92 temp outside. Therm set at 78. With Black wire conneted to blower relay speed drops 1/2 then super slow.Do I have feed back from Contactor or Relay?:confused:
thumper262
May 11, 2009, 05:27 PM
Did you get a new capacitor with the motor and will the blower run normal if you turn the fan switch on at the thermostat and the cooling off?
New cpacitor, blower full speed runs only with compressor off, blower on, half speed to nothing compressor on.