Forum Discussion

dedmiston's avatar
dedmiston
Moderator
Oct 02, 2019

Furnace won’t ignite

We ran out of propane overnight and now I can’t get my furnace to ignite. The water heater and stove are both ok, but the furnace just blows cold air and shuts off. Thoughts?
  • mchero wrote:
    Please post your outcome.


    I think it was low flow. I disconnected the lines and reconnected. It runs fine now.
  • joelc's avatar
    joelc
    Explorer III
    Above good advise, but also turn on your stove burners while trying it. If air in the lines it will help clear it.
  • Need to clear air from the lines, It could take numerous times depending how much pipe is involved. My guess would be 5-10.
    Next question, are you running off batteries? They culd be low not allowing the fan to come up to full speed which closes the sail switch.