Have HVAC Questions? Ask an HVAC Expert for Answers
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue.
If my initial response doesn’t answer your question then let me know and we can continue our conversation.
NOTE: I can only get paid for assisting you if you RATE ANSWER the 5 star rating after you are satisfied with answer.
Are you ready?
Here is a link that shows the flash code you might be getting after furnace locks out.
You will find the blinking lights through a round sight glass at the bottom furnace panel
take bottom panel off locate control board, there will be 2 led lights just above where the t-stat wire are tied in, make sure nothing is blocking your view when you look through sight glass
refer to page 11 of link for diagnostic codes
does it look like fige 10 on page 11
OK that is the first generation G26,
go through page 14 and 15, your led is on ignition control
Then page 16 shows flame sensor access and maintenance
I have to go out to work tomorrow but try this net step if first one fails,
The other possible issue could be item 15 on page 17, along with figure 23
that is not the easiest furnace to do repairs on but with this info you might get it depending of your skill level
Best of luck
Did you fix the problem?
have you got around to clean the flame sensor?
I am thinking that the ignition control where the flame sensor hooks in has gone faulty and they often do.
Considering the age of unit, it would be a good idea, I happen to have the exact same one and all controls were replaced 3 years ago.
Last thing are you able to view pilot flame at startup, it needs to be blue and long enough to heat the flame sensor, and even after flames are established, small pilot flame can get sucked out off position or completely
I am on phone with customer, will get back to you shortly