Atwood Water Heater ?

[trnfla]

I have an Atwood model G6A-8E 6 gallon unit with a DSI. Can someone explain how the PC board determines if the iginiter has lit the gas?

To stop trying to lite the gas.

I keep reading about thermo-coupler but cannot locate one on this unit or one listed in the manual.

Thanks

[trnfla]

The ignitor fixed my problem. Thanks everyone

[tatest]

The heater can ignite the gas, and fail to detect that it is ignited, if there is a discontinuity within the igniter, or the lead to the igniter. Spark voltages can jump that gap, but the voltage used to sense the flame cannot, so no flame sensor current, board shuts down the gas shortly after the spark lights it.

Fix for that, in my case, was a new ignitor. Discontinuity was wire inside the insulator.

[trnfla]

Chris, thanks for the response.

[Chris_Bryant]

It runs a very small current through the spark gap and flame. Make sure the gap is in the flame, make sure the gap is 1/8 - 3/16", lightly sand the electrodes, tighten the burner mounting screws and lightly clean the connector on the circuit board with a pencil eraser.

More info at http://blog.rv.net/2008/02/lp-appliances-electronic-ignition-systems/