You can try this manual
http://yaunco.com/pdfs/nordyne/Residential/m1install.pdf
SOURCE: furnace won't kick on
My gas furnace wont kick on when it has been off for awile, we have replaced the thermostate and checked eveything else. Once we gett it going it works but wont kick in once the temp drops
SOURCE: furnace has does not ignite flame
how often do you replace your filter?
On the limit switch that protects your unit when it gets to hot the number one reason is dirty filter.
The pressure switch is located in the upper side of cabinet has a rubber hose connected to it. They very rarely go out though. So find your vent fan the first fan that comes on and follow the rubber hose to the switch.
SOURCE: intertherm gas furnace inducer centrifugal switch
Chances are the draft inducer motor is not pulling enough CFM through the heat exchanger.
That is usually due to either blocked/clogged flue pipe/vent.
damaged, missing or dirty fan blades.
or a motor going bad.
Check those three things first, as they are the usually problem. Other than that, it would be a sticking or bad switch.
If you s-uck on the end of the hose like a straw, while it is attached to the switch and it does not pull in then you are looking at a bad switch/cracked hose issue. If it does, then you are back to the draft inducer motor or it's squirrel cage fan being bad.
These are notorious for rusting and the blades breaking off.
SOURCE: intertherm m1m furnace board says low flame yellow
The system most likely just needs to be cleaned thouroghly. The burners, orifices, ignition assembly and flame sensors get diry, rusty, and contaminaterd. That causes low gas flow, and improper flame pattern. The othe possiblilty is a cloged or failing gas valve.
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