Coleman evcon electrical furnace doesnt force air intermittently

SOURCE: 1985 evcon forced air furnace no ac

Most likely your flame rod is either dirty, bad or the flame is not hitting it. It is located either to the far left or far right of the burner box. It has one wire going to it and looks like a small stick pointing into the flame. Clean it with a long tooth brush. Inspect the wire where it attaches to both the rod and the control module. Inspect the flame as it starts and see if the flame reaches it within 2 to 3 seconds from first flame. If not, you may have debris clogging the flame tray not allowing the flame to pass. If this is beyond your mechanical skills (no offence) contact your gas technician.

SOURCE: Coleman forced air furnace blower

Rmove the two screws holding the blower in place and slide it out. With the power off, rotate the wheel and inspect for debris or an impingement. If everything turns easy, you have a bad motor or start capacitor. If you have rubbing, adjust the wheel. If the motor will not turn, replace it.

SOURCE: i have a coleman/evcon electric

Have you tried to replace pressure switch for the combustion air. If your not sure where to find it if you pull the front panels off follow the flue pipe down to combustion chamber the combustion fan motor is either inside the flue pipe or out side of it not sure on the one you have but you should see two plastic tubes that connect to a barb onto the topside of the fan and one on the bottom they both should go back to the pressure switch. i hope this helps you if you have any more question or if this doesnt fix the problem just reply back to this message . Make sure fan is working when furnace starts up. It should be the first thing that comes on when there is a call for heat