furnace starting movie - power supply? motherboard?


  #1  
Old 03-05-10, 06:25 AM
H
Member
Thread Starter
Join Date: Mar 2010
Location: baltimore
Posts: 1
Upvotes: 0
Received 0 Upvotes on 0 Posts
furnace starting movie - power supply? motherboard?

furnace will start only 1 in 50 tries, draft inducer motor loses the power supply after a second or two, i have posted movies demonstrating the problem. goodman GMP075

any ideas? here is the movie:

movie 1 - furnace problem overview
Untitled Document

movie 2 - furnace stopping after 4 or 5 seconds
Untitled Document
 
  #2  
Old 03-05-10, 08:42 AM
SeattlePioneer's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2007
Location: Seattle, Wa
Posts: 4,469
Upvotes: 0
Received 1 Upvote on 1 Post
Erratic operation of a part such as your inducer motor is usually some bad electrical connection or a failing electrical relay or part.


I'd start by verifying that you have a constant 24 VAC at the terminal, which would verify that the thermostat is calling for heat reliably.

Since moving the wires around in the fan comp-artment can cause the inducer motor to switch on, I'd investigate that with some care. Use some tape to hold the door switch in and see if you can identify wire or part starts the inducer motor when it's touched or manipulated.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: