I do not have pictures, but we do have a wiring diagram that shows a FA 7916-II Meaning rev II of the FA 7916 furnace. Are they any other letter/numbers to your model number?
See page 8 of this 2003 Atwood service manual in our FILES section. Be logged in and download a copy
There are 3 wiring diagrams on page 8, I'm "guessing" as I cannot see a pic of your furnace showing the timing relay, the ignition control board or the igniter wires to confirm this. Odds may be that yours is the one in the bottom center of the page called "local sense wiring"
The way to know for sure, look for these features on your furnace.
Is there a timing relay? If yes then, is there 1 or 2 wires going to the igniter electrode area?
If there are 2 wires, One on the electrode and a 2nd one near it as a feed back probe, then you have "remote sense wiring"
If there is 1 wire to the electrode only, then have the "local senses wiring"
Hope this helps.
We can help troubleshoot with you if needed. This all starts with:
1. What is the DC voltage going into the furnace as measured with a volt meter
2. Are you sure the thermostat is sending a 12 VDC signal to the furnace when there is a call for heat?
3. When the t stat turns on calling for heat, after a small wait period (1 to 25 seconds) does the fan blower motor turn on?
If you cannot make it at least to step 3 and the blower motor run, that is the place to start on why not?
Make sure you have a good ground (- 12 VDC) going to the furnace. While you may have + 12 VDC to the furnace, if the ground at the furnace, it will not complete the circuit. If you test with a meter for voltage using the ground wire at the furnace, that helps at least you know the ground and hot going to the furnace is good.
Hope this helps,
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
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