Its been a while since I worked on Coleman/Evcon units but if I remember correctly, the first 2 digits of the serial number is the month the unit was built and the next 2 digits is the year it was built and the rest of the number is how many were built..
For instance serial #11071025 it was built in the 11th month of 2007 and this was the 1,025th unit built.
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: wiring from thermostat to furnace
Typically you normally will have five wires controlling your furnace and airconditioning. R Y W G C. If you get some thermostat wire. Connect them like this---- red wire will go to R(this is your 24V to thermostat)----yellow wire will go Y(Y is your cooling)----white wire will go W(W is for heating)---green wire to G(green is your fan)---black can go to C(this is your common to supply 24Vto thermostat)
SOURCE: I have an Evcon furnace Model # DGAT075BDF. It
Does your fan work from the on position. New tstat may have RC and RH need to jumper them. If that does not work. Turn on tstat check voltage on board at furnace between w and c if you have voltage you may have a bad board. Also see if there is any reset buttons like on the roll out switches. Smaa red buttons. Push them to reset. Let me know what going on. Rus
SOURCE: I have a coleman evcon model dgat070bdf furnace.
Hi check the flame sensor is clean also check out the pressure switch , and check air filter is clean
SOURCE: I have a coleman evcon furnace Model BGU075.
Check your gas flow...clean the sensor...and be sure your gas switch is in the right pposition
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