Carrier 8000vs advice needed


  #1  
Old 09-27-11, 06:32 PM
M
Member
Thread Starter
Join Date: Sep 2011
Location: USA
Posts: 1
Received 0 Votes on 0 Posts
Carrier 8000vs advice needed

Our carrier 8000vs gas furnace installed 2001 would not turn on at the beginning of fall and the code read 43 low pressure switch. Our friend "blew in the tube" in the low pressure switch and it started again, but later that night switched off again. Then we replaced the low pressure switch. The furnace came back on but turned off after a few minutes. If we hit the reset button it will turn on, but it only runs for a few minutes. Do we have any other options other than calling a pro? Husband thinks something is tripping the "vent reset."
Any advice is appreciated
getting cold aka margaret
 
  #2  
Old 09-28-11, 04:26 AM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 18,427
Received 0 Votes on 0 Posts
Check the vent pipe outside to make sure nothing has gotten in there.

If the pipes can come undone at the furnace, then take a shop vac and blow into the pipe going outside.
 
  #3  
Old 09-28-11, 09:36 AM
SeattlePioneer's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2007
Location: Seattle, Wa
Posts: 5,499
Received 0 Votes on 0 Posts
ANOTHER perfectly good pressure switch replaced! 98% of the time, pressure switches aren't the problem.
 
  #4  
Old 09-28-11, 10:37 AM
F
Member
Join Date: Mar 2006
Location: Wet side of Washington state.
Posts: 18,495
Received 36 Votes on 28 Posts
Also check the nipple where the hose from the pressure switch connects to the fan housing. These will often rust internally to the point where the passage is completely occluded. You need to use a series of small drill bits to clear the rust.
 
 

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