Ask Experts Questions for FREE Help !
Ask

Furnace blower motor not switching off

Asked Jun 26, 2005, 12:17 PM — 2 Answers
I have an old furnace and a new central a/c unit. The other night I realized the blower motor was not shutting off when the thermostat clicked off the a/c. I had to unplug the blower motor . The next day I installed a new thermostat to see if that was the problem. It was not. The blower motor was replaced about 4 years ago, but it looks old so it probably was a rebuilt one. We previously leased the house and are now buying it. The motor is a Varitrol motor--model-59066SL.

Search this Thread
Share |
2 Answers
labman's Avatar
labman Posts: 10,673, Reputation: 3050
Über Member
  
#2

Jun 26, 2005, 02:07 PM
Most A/C systems are wired so the blower continues for a short while after the compressor shuts off. It may be to insure all the freon is vaporized from the coil, or to warm up the system to reduce condensation.

If it never shuts off, check the wiring to the blower. The switch or more likely, the relay that actually switches the blower may be bad. Usually not a big deal to fix.
Helpful
lionfoxx's Avatar
lionfoxx Posts: 34, Reputation: 1
Junior Member
  
#3

Jun 28, 2005, 08:44 PM
I had a blower fan shut off problem,
My Lenox, from 1989 would not shut off and the problem was the fan limit control, my particular box takes one with a power line on it, the heating guy replaced it twice and mistakenly grabbed the wrong one because they look identical, but one has a hot wire on it, with the correct one in the unit the fan works fine.
Helpful
Not your question? Ask your question View similar questions
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Add your answer here.

Remove Text Formatting
 

Undo
Redo
  
Decrease Size
Increase Size
Bold
Italic
Underline
Align Left
Align Center
Align Right
Ordered List
Unordered List
Decrease Indent
Increase Indent
Insert Email Link
Wrap [QUOTE] tags around selected text
Wrap [CODE] tags around selected text
Wrap [HTML] tags around selected text
Wrap [PHP] tags around selected text
Wrap [YOUTUBE] tags around selected text
Notification Type:



Check out some similar questions!

Furnace blower motor [ 10 Answers ]

I have a Climatrol Furnace, and it stopped working. I called a Heating Co, and the technician said that that the motor was bad, it's and old unit with Climatrol no longer in business. I might be able to find a used motor, but I really need a new furnace. After he left I was reaching in and I was...

Gas Furnace Blower Motor [ 6 Answers ]

I have an old Rheem gas furnace. My fan blower motor stopped working. I had Sears order me a new one. The installer walked away, giving up because he couldn't get the old motor out of the housing. I got it out and installed the new one myself. Everything turns freely. I made the furnace turn on and...

Furnace blower motor wiring [ 2 Answers ]

I have an old furnace blower that I want to convert to a shop air clearner. I want the motor to operate from a normal 110 volt switch. My question is which wires do I connect to the switch? The motor is a 1/2 hp Emerson Model K55HXLGG3702 It has 6 wires - black, white, brown, blue, red, yellow

Furnace blower motor problem [ 2 Answers ]

I need some help with a non-working furnace in Colorado. The furnace is an 1988

Furnace blower motor [ 1 Answers ]

A friend asked help about his furnace blower emitting a screeching sound during operation and then just stopped. I went over and tried to rotate the blower by hand - resistance to free rotation was present. Removed the blower assembly and dismantled motor. No lubrication on both motor bushings. ...

View more Heating & Air Conditioning questions Search