ignition problem


  #1  
Old 01-06-06, 07:17 PM
chitrader
Visiting Guest
Posts: n/a
Angry ignition problem

My furnace is Lennox G23 Series, about 11 years old.

Recently it has ignition problem. Basic it just failed to ignite when necessary. There is no air flow from the supply vent. But the furnace seems keep running.(there is some noise seem the fan is still running?). I had my furnace clean checked 2 months ago.

It happend twice 1 week ago. Each time, I turned the power off and then turned it on after 10 minutes, it resumed normal. I called a contractor and he came to check it. He just cleaned a little bit the flame sensor and said should be ok since he didn't see anything wrong.

But it happend again today, turn it off and turn it on works again. I am afraid there is something wrong. What could be wrong? Should I call the contractor again to check?

Thanks very much.
 
  #2  
Old 01-07-06, 08:34 AM
Join Date: Jan 2006
Posts: 48
Upvotes: 0
Received 0 Upvotes on 0 Posts
There is no air flow from the supply vent seems to be a problem.
is the fan running or is it humming. if it is humming the the fan motor maybe defective although it could be a start capacitor. but the again it could a relay or even a circuit board. sometimes one has to be there when it malfuctions
 
  #3  
Old 01-08-06, 09:43 AM
chitrader
Visiting Guest
Posts: n/a
it is humming. but no air flow.
 
  #4  
Old 01-08-06, 02:34 PM
Join Date: Jan 2006
Posts: 48
Upvotes: 0
Received 0 Upvotes on 0 Posts
it sounds like a defective motor
it is possible that it needs a start capacitor or start windingS
if the motor hums and doesnt blow.
i suggest calling a professional out
 
  #5  
Old 01-08-06, 03:45 PM
KField's Avatar
Member
Join Date: Dec 2002
Location: Easton, PA
Posts: 3,015
Upvotes: 0
Received 0 Upvotes on 0 Posts
I'm not familiar with that model specifically but I want to be sure we are all on the same page. If the furnace has an inducer fan, that will run any time the safety control sees a fault. If the inducer fan is running and cycling the power switch gets the unit throwing heat again, it seems like a flame sensor problem. If the inducer fan is humming and not running, the problem lies with the inducer fan. I don't think the house air blower will come on if the furnace doesn't light up. I could be wrong (I have been wrong before), but I wanted to spark some conversation before you go and call a tech.

Ken
 
 

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