Good evening,
I have a 2006 Ducane HVAC/furnace, electronic ignition.
All summer the system was running just fine in cooling mode. As it got colder, I wanted to start the heating mode.
I set the thermostat to the desired temperature and the unit started as expected.
Meaning: the inducer fan kicked on and ran. But it did NOT ignite.
I got the nefarious 3 flashes of the LED. Looking up the error code I learned, that this is the pressure switch.
So I ordered one and installed it. Even tested it by "unplugging" the rubber hose and sucking on it. Yes, the inducer kicked in.
But still not igniting.
So I read more and compared symptoms with cases I found on the net.
That led to the next 3 steps:
1) cleaning flame sensor: done, same result
2) check intake and vent: no obstruction
3) Replacing the ignitor: done, same result
And now I run out of ideas/options.
I even left the system on to check if it behaves as it should:
- kicks on
- does not ignite
- after about a minute shuts off
- repeats the cycle every 5 minutes
HOW CAN I GET IT TO IGNITE?
Thank you very much for your help and any hints!
Jack
I have a 2006 Ducane HVAC/furnace, electronic ignition.
All summer the system was running just fine in cooling mode. As it got colder, I wanted to start the heating mode.
I set the thermostat to the desired temperature and the unit started as expected.
Meaning: the inducer fan kicked on and ran. But it did NOT ignite.
I got the nefarious 3 flashes of the LED. Looking up the error code I learned, that this is the pressure switch.
So I ordered one and installed it. Even tested it by "unplugging" the rubber hose and sucking on it. Yes, the inducer kicked in.
But still not igniting.
So I read more and compared symptoms with cases I found on the net.
That led to the next 3 steps:
1) cleaning flame sensor: done, same result
2) check intake and vent: no obstruction
3) Replacing the ignitor: done, same result
And now I run out of ideas/options.
I even left the system on to check if it behaves as it should:
- kicks on
- does not ignite
- after about a minute shuts off
- repeats the cycle every 5 minutes
HOW CAN I GET IT TO IGNITE?
Thank you very much for your help and any hints!
Jack