Heat Pump Motor Wiring - Electrical - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 10-29-2011, 01:45 AM   #1
Newbie
 
Join Date: Oct 2011
Posts: 1
Rewards Points: 10
Default

Heat pump motor wiring


Ok guys here is the deal, recently my heat pump motor decided to seize up making my house smell like nice burnt electronics.. So I replaced it with a new motor, making sure all of the dimensions were exact. I replaced the wiring exactly as it was, basically white is common, red is low, blue medium, black is high, both browns are for the capacitor, and yellow/green is ground. The problem is that when I turn the system on, it starts up and is nice an powerful for about a minute and 20-30 seconds then it shuts itself off. I went back into my attic and the motor was very hot from the short time of it being on. Anyone have any ideas what could be causing this? I also replaced the capacitor when I replaced the motor, and the wiring in my unit only plugs into the common, and number 3 and 4 plug, leaving the 1 and 4 open (above the wires show a sticker with common, hi, med, and low, so not sure where the other plug should be...) Any help would be greatly appreciated!!!

Advertisement

70sixspeed is offline   Reply With Quote
Old 10-29-2011, 08:57 AM   #2
Electrical Contractor
 
Join Date: Oct 2011
Location: KC Metro
Posts: 44
Rewards Points: 25
Default

Heat pump motor wiring


Did you check your voltage applied to the motor? What else is in the circuit? It sounds like whatever happened to your last motor is still the route cause if the new motor is heating up. Good thing your new motor shuts itself off before releasing the smoke.

Advertisement

Sine is offline   Reply With Quote
Old 10-29-2011, 01:21 PM   #3
Idiot Emeritus
 
Join Date: Mar 2008
Location: Fernley, Nevada (near Reno)
Posts: 1,633
Rewards Points: 1,060
Default

Heat pump motor wiring


3 possibilities come to mind here;

1) Is the new motor the correct voltage? Usually, 240 applied to a 120 motor will burn up the motor in about 10 seconds, but check anyway.

2) Is the capacitor good? and the correct rating? The two brown leads go to the capacitor, it doesn't matter which lead goes to which terminal.

3) There could be a problem in the control circuitry that applies voltage to two speeds at the same time. This will cause exactly the symptoms you describe. Remove and insulate all but one of the speed wires and see if it runs longer.

Rob
micromind is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New heat pump wiring question jmedenf HVAC 3 10-14-2011 07:26 PM
Using Gas heat during Defrost mgroves HVAC 15 12-18-2010 06:51 PM
Need help from control guys or heat pump gurus (reversing heat pump defrost cycle) pomelo HVAC 11 03-08-2010 09:13 PM
New Install - Heat Pump Woes... mark1210 HVAC 7 03-07-2010 10:14 AM
Comparison and Heat Pump Selection help... ChrisDIY HVAC 7 03-06-2010 09:34 PM




Top of Page | View New Posts