This is a replacement circuit board for your Atwood Combination Water Heater. This board sends a signal to your spark probe in order to ignite the propane to heat your water heater. It also sends a singal to the element on your water heater for 120V AC Electric heating.
Compatible with: GCH6A-10E, GC6AA-10E, GC10A-4E, GCH10A-4E
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