Thread: hvac unit gas
View Single Post
  #5 (permalink)  
Old 12-26-2012, 03:00 PM
hev-v hev-v is offline
Junior Member
 
Join Date: Dec 2012
Posts: 4
hev-v is on a distinguished road
Thumbs up limit switch

Quote:
Originally Posted by kurt h View Post
a very common problem with the flame rod (sensor) is that over time a thin layer of carbon will build up on rod and send a false signal to the ignition module causing it to lock out.usually you can pull it out and carefully sand the flame rod.reinstall. Make sure you have a good connection to board. And a good ground to furnace where rod holder is attached.
on my unit i have aux limit and high limit switch cant seem to find them i checked roll out switch ok i just changed flame sensor i have been adjusting white rodgers pressure on gas it seems to help it sounded like a jet airplane taking off i would like to try and check high limit switch if i could find it and how to check it i would also like to say thank all of u for helping with this problem this site is the best

THANKS HEV_V
Reply With Quote
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17