Jun-13-2020 09:12 AM
Jun-14-2020 12:29 PM
Thermoguy wrote:The igniter is different.
I had the same problem you are experiencing and it was my igniter. I didn't troubleshoot it, I took it to a RV repair and they replaced it. I'm not sure if the "sail switch" is the igniter, so I apologize for my ignorance. But, that was the fix for mine.
Jun-14-2020 08:19 AM
Jun-13-2020 05:15 PM
Bulletboy wrote:The sail switch is the most common thing to fail. So much so, that I carry a spare.
Hi, I have a 2015 Keystone Bullet with an Atwood (AFMD30121) furnace.
It worked fine, then through the night stopped working...the blower kicks on for 30sec then shuts off with no ignition.
The circuit board blinks with a code stating it’s an Air flow/Limit Fault problem.
I’ve taken the sail switch out and everything is clean. I put an Ohm meter on it and when I manually close the switch it reads 3 Ohm...then drops to 0 within a second.
When I check the Ohms with it in place...just reads open line the whole time (With fan on)
I’ve then checked the Voltage going to the Sail Switch and 1st time read 12V at the wire...but 0 when it’s plugged into sail switch. I then tried again to measure voltage (with fan on) and can’t get any reading at all?!?
At first I thought my sail switch is faulty...but now I’m wondering if it’s the circuit board. I find it strange that I can’t get a voltage reading now, especially when I was getting one...even when the furnace wouldn’t ignite.
I have the furnace pulled out and there is no sign of dust/debris anywhere
Your response & thoughts are all greatly appreciated! Thanks
Jun-13-2020 12:21 PM